signbit detection (was [perl #39875] -0.0 loses signedness upon numeric comparison)

Message-ID: <Pine.LNX.4.62.0702091121400.10202@fractal.phys.lafayette.edu>

p4raw-id: //depot/perl@30192

10 files changed, 1781 insertions, 1655 deletions

diff --git a/Configure b/Configure
index cb78806354..fbfd228259 100755
--- a/Configure
+++ b/Configure
@@ -26,7 +26,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Mon Jan  8 08:32:35 CET 2007 [metaconfig 3.0 PL70]
+# Generated on Sat Feb 10 17:48:04 CET 2007 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >c1$$ <<EOF
@@ -700,6 +700,7 @@ d_shmctl=''
 d_shmdt=''
 d_shmget=''
 d_sigaction=''
+d_signbit=''
 d_sigprocmask=''
 d_sigsetjmp=''
 usesitecustomize=''
@@ -1262,29 +1263,10 @@ elif test -d c:/. -o -n "$is_os2" ; then
 fi
 
 i_whoami=''
-ccname=''
-ccversion=''
-perllibs=''
-: set useposix=false in your hint file to disable the POSIX extension.
-useposix=true
-: set useopcode=false in your hint file to disable the Opcode extension.
-useopcode=true
 : Trailing extension.  Override this in a hint file, if needed.
 : Extra object files, if any, needed on this platform.
 archobjs=''
 archname=''
-: Possible local include directories to search.
-: Set locincpth to "" in a hint file to defeat local include searches.
-locincpth="/usr/local/include /opt/local/include /usr/gnu/include"
-locincpth="$locincpth /opt/gnu/include /usr/GNU/include /opt/GNU/include"
-:
-: no include file wanted by default
-inclwanted=''
-
-: Enable -DEBUGGING and -DDEBUGGING from the command line
-EBUGGING=''
-DEBUGGING=old
-
 groupstype=''
 libnames=''
 : change the next line if compiling for Xenix/286 on Xenix/386
@@ -1312,17 +1294,36 @@ ignore_versioned_solibs=''
 siteman1dir=''
 siteman3dir=''
 sitescript=''
+: set usethreads on the Configure command line to enable threads.
+usereentrant='undef'
+: full support for void wanted by default
+defvoidused=15
+
+: Possible local include directories to search.
+: Set locincpth to "" in a hint file to defeat local include searches.
+locincpth="/usr/local/include /opt/local/include /usr/gnu/include"
+locincpth="$locincpth /opt/gnu/include /usr/GNU/include /opt/GNU/include"
+:
+: no include file wanted by default
+inclwanted=''
+
+: Enable -DEBUGGING and -DDEBUGGING from the command line
+EBUGGING=''
+DEBUGGING=old
+
+ccname=''
+ccversion=''
+perllibs=''
+: set useposix=false in your hint file to disable the POSIX extension.
+useposix=true
+: set useopcode=false in your hint file to disable the Opcode extension.
+useopcode=true
 archname64=''
 ccflags_uselargefiles=''
 ldflags_uselargefiles=''
 libswanted_uselargefiles=''
 : set usemultiplicity on the Configure command line to enable multiplicity.
 : set usesocks on the Configure command line to enable socks.
-: set usethreads on the Configure command line to enable threads.
-usereentrant='undef'
-: full support for void wanted by default
-defvoidused=15
-
 : List of libraries we want.
 : If anyone needs extra -lxxx, put those in a hint file.
 libswanted="sfio socket bind inet nsl nm ndbm gdbm dbm db malloc dl dld ld sun"
@@ -16964,6 +16965,51 @@ fi
 set d_sigaction; eval $setvar
 $rm -f try try$_o try.c
 
+: see if this is a sunmath.h system
+set sunmath.h i_sunmath
+eval $inhdr
+
+: see if signbit exists
+$echo $n "Checking to see if you have signbit() available to work on $nvtype... $c" >&4
+$cat >try.c <<EOCP
+#$i_math I_MATH
+#$i_sunmath I_SUNMATH
+#ifdef I_MATH
+#  include <math.h>
+#endif
+#ifdef I_SUNMATH  /* Solaris special math library */
+#  include <sunmath.h>
+#endif
+#define NV $nvtype
+int main(int argc, char **argv)
+{
+    NV x = 0.0;
+    NV y = -0.0;
+    if ((signbit(x) == 0) && (signbit(y) != 0))
+	return 0;
+    else
+	return 1;
+}
+EOCP
+val="$undef"
+set try
+if eval $compile; then
+    if $run ./try; then
+        $echo "Yes." >&4
+	val="$define"
+    else
+        $echo "Signbit seems to be available, but doesn't work as I expected."
+        $echo "I won't use it." >&4
+	val="$undef"
+    fi
+else
+    $echo "Nope." >&4
+    dflt="$undef"
+fi
+set d_signbit
+eval $setvar
+$rm -f try.* try
+
 : see if sigprocmask exists
 set sigprocmask d_sigprocmask
 eval $inlibc
@@ -20851,10 +20897,6 @@ val=$val3; set i_termios; eval $setvar
 set stddef.h i_stddef
 eval $inhdr
 
-: see if this is a sunmath.h system
-set sunmath.h i_sunmath
-eval $inhdr
-
 : see if sys/access.h is available
 set sys/access.h i_sysaccess
 eval $inhdr
@@ -21846,6 +21888,7 @@ d_shmctl='$d_shmctl'
 d_shmdt='$d_shmdt'
 d_shmget='$d_shmget'
 d_sigaction='$d_sigaction'
+d_signbit='$d_signbit'
 d_sigprocmask='$d_sigprocmask'
 d_sigsetjmp='$d_sigsetjmp'
 d_sitearch='$d_sitearch'
diff --git a/Porting/Glossary b/Porting/Glossary
index 4c6fc60050..204712e2cf 100644
--- a/Porting/Glossary
+++ b/Porting/Glossary
@@ -1937,6 +1937,11 @@ d_sigaction (d_sigaction.U):
 	This variable conditionally defines the HAS_SIGACTION symbol, which
 	indicates that the Vr4 sigaction() routine is available.
 
+d_signbit (d_signbit.U):
+	This variable conditionally defines the HAS_SIGNBIT symbol, which
+	indicates to the C program that the signbit() routine is available
+	and safe to use with perl's intern NV type.
+
 d_sigprocmask (d_sigprocmask.U):
 	This variable conditionally defines HAS_SIGPROCMASK
 	if sigprocmask() is available to examine or change the signal mask
diff --git a/config_h.SH b/config_h.SH
index 84eb8aebe9..bb951ac371 100644
--- a/config_h.SH
+++ b/config_h.SH
@@ -887,40 +887,45 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_vfork I_VFORK	/**/
 
-/* HAS_ACCESSX:
- *	This symbol, if defined, indicates that the accessx routine is
- *	available to do extended access checks.
+/* INTSIZE:
+ *	This symbol contains the value of sizeof(int) so that the C
+ *	preprocessor can make decisions based on it.
  */
-#$d_accessx HAS_ACCESSX		/**/
-
-/* HAS_EACCESS:
- *	This symbol, if defined, indicates that the eaccess routine is
- *	available to do extended access checks.
+/* LONGSIZE:
+ *	This symbol contains the value of sizeof(long) so that the C
+ *	preprocessor can make decisions based on it.
  */
-#$d_eaccess HAS_EACCESS		/**/
-
-/* I_SYS_ACCESS:
- *     This symbol, if defined, indicates to the C program that it should
- *     include <sys/access.h>.
+/* SHORTSIZE:
+ *	This symbol contains the value of sizeof(short) so that the C
+ *	preprocessor can make decisions based on it.
  */
-#$i_sysaccess   I_SYS_ACCESS                /**/
+#define INTSIZE $intsize		/**/
+#define LONGSIZE $longsize		/**/
+#define SHORTSIZE $shortsize		/**/
 
-/* I_SYS_SECURITY:
- *     This symbol, if defined, indicates to the C program that it should
- *     include <sys/security.h>.
+/* MULTIARCH:
+ *	This symbol, if defined, signifies that the build
+ *	process will produce some binary files that are going to be
+ *	used in a cross-platform environment.  This is the case for
+ *	example with the NeXT "fat" binaries that contain executables
+ *	for several CPUs.
  */
-#$i_syssecrt   I_SYS_SECURITY	/**/
+#$multiarch MULTIARCH		/**/
 
-/* USE_CROSS_COMPILE:
- *	This symbol, if defined, indicates that Perl is being cross-compiled.
- */
-/* PERL_TARGETARCH:
- *	This symbol, if defined, indicates the target architecture
- *	Perl has been cross-compiled to.  Undefined if not a cross-compile.
+/* HAS_QUAD:
+ *	This symbol, if defined, tells that there's a 64-bit integer type,
+ *	Quad_t, and its unsigned counterpar, Uquad_t. QUADKIND will be one
+ *	of QUAD_IS_INT, QUAD_IS_LONG, QUAD_IS_LONG_LONG, or QUAD_IS_INT64_T.
  */
-#ifndef USE_CROSS_COMPILE
-#$usecrosscompile	USE_CROSS_COMPILE	/**/
-#define	PERL_TARGETARCH	"$targetarch"	/**/
+#$d_quad HAS_QUAD	/**/
+#ifdef HAS_QUAD
+#   define Quad_t $quadtype	/**/
+#   define Uquad_t $uquadtype	/**/
+#   define QUADKIND $quadkind	/**/
+#   define QUAD_IS_INT	1
+#   define QUAD_IS_LONG	2
+#   define QUAD_IS_LONG_LONG	3
+#   define QUAD_IS_INT64_T	4
 #endif
 
 /* OSNAME:
@@ -936,26 +941,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define OSNAME "$osname"		/**/
 #define OSVERS "$osvers"		/**/
 
-/* MULTIARCH:
- *	This symbol, if defined, signifies that the build
- *	process will produce some binary files that are going to be
- *	used in a cross-platform environment.  This is the case for
- *	example with the NeXT "fat" binaries that contain executables
- *	for several CPUs.
- */
-#$multiarch MULTIARCH		/**/
-
-/* MEM_ALIGNBYTES:
- *	This symbol contains the number of bytes required to align a
- *	double, or a long double when applicable. Usual values are 2,
- *	4 and 8. The default is eight, for safety.
- */
-#if defined(USE_CROSS_COMPILE) || defined(MULTIARCH)
-#  define MEM_ALIGNBYTES 8
-#else
-#define MEM_ALIGNBYTES $alignbytes
-#endif
-
 /* ARCHLIB:
  *	This variable, if defined, holds the name of the directory in
  *	which the user wants to put architecture-dependent public
@@ -980,18 +965,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #define ARCHNAME "$archname"		/**/
 
-/* HAS_ATOLF:
- *	This symbol, if defined, indicates that the atolf routine is
- *	available to convert strings into long doubles.
- */
-#$d_atolf HAS_ATOLF		/**/
-
-/* HAS_ATOLL:
- *	This symbol, if defined, indicates that the atoll routine is
- *	available to convert strings into long longs.
- */
-#$d_atoll HAS_ATOLL		/**/
-
 /* BIN:
  *	This symbol holds the path of the bin directory where the package will
  *	be installed. Program must be prepared to deal with ~name substitution.
@@ -1008,65 +981,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define BIN_EXP "$binexp"	/**/
 #define PERL_RELOCATABLE_INC "$userelocatableinc" 		/**/
 
-/* INTSIZE:
- *	This symbol contains the value of sizeof(int) so that the C
- *	preprocessor can make decisions based on it.
- */
-/* LONGSIZE:
- *	This symbol contains the value of sizeof(long) so that the C
- *	preprocessor can make decisions based on it.
- */
-/* SHORTSIZE:
- *	This symbol contains the value of sizeof(short) so that the C
- *	preprocessor can make decisions based on it.
- */
-#define INTSIZE $intsize		/**/
-#define LONGSIZE $longsize		/**/
-#define SHORTSIZE $shortsize		/**/
-
-/* BYTEORDER:
- *	This symbol holds the hexadecimal constant defined in byteorder,
- *	in a UV, i.e. 0x1234 or 0x4321 or 0x12345678, etc...
- *	If the compiler supports cross-compiling or multiple-architecture
- *	binaries (eg. on NeXT systems), use compiler-defined macros to
- *	determine the byte order.
- *	On NeXT 3.2 (and greater), you can build "Fat" Multiple Architecture
- *	Binaries (MAB) on either big endian or little endian machines.
- *	The endian-ness is available at compile-time.  This only matters
- *	for perl, where the config.h can be generated and installed on 
- *	one system, and used by a different architecture to build an
- *	extension.  Older versions of NeXT that might not have
- *	defined either *_ENDIAN__ were all on Motorola 680x0 series,
- *	so the default case (for NeXT) is big endian to catch them. 
- *	This might matter for NeXT 3.0.
- */
-#if defined(USE_CROSS_COMPILE) || defined(MULTIARCH)
-#  ifdef __LITTLE_ENDIAN__
-#    if LONGSIZE == 4
-#      define BYTEORDER 0x1234
-#    else
-#      if LONGSIZE == 8
-#        define BYTEORDER 0x12345678
-#      endif
-#    endif
-#  else
-#    ifdef __BIG_ENDIAN__
-#      if LONGSIZE == 4
-#        define BYTEORDER 0x4321
-#      else
-#        if LONGSIZE == 8
-#          define BYTEORDER 0x87654321
-#        endif
-#      endif
-#    endif
-#  endif
-#  if !defined(BYTEORDER) && (defined(NeXT) || defined(__NeXT__))
-#    define BYTEORDER 0x4321
-#  endif
-#else
-#define BYTEORDER 0x$byteorder	/* large digits for MSB */
-#endif /* NeXT */
-
 /* CAT2:
  *	This macro concatenates 2 tokens together.
  */
@@ -1121,12 +1035,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define CPPRUN "$cpprun"
 #define CPPLAST "$cpplast"
 
-/* HAS__FWALK:
- *	This symbol, if defined, indicates that the _fwalk system call is
- *	available to apply a function to all the file handles.
- */
-#$d__fwalk HAS__FWALK		/**/
-
 /* HAS_ACCESS:
  *	This manifest constant lets the C program know that the access()
  *	system call is available to check for accessibility using real UID/GID.
@@ -1134,11 +1042,11 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_access HAS_ACCESS		/**/
 
-/* HAS_AINTL:
- *	This symbol, if defined, indicates that the aintl routine is
- *	available.  If copysignl is also present we can emulate modfl.
+/* HAS_ACCESSX:
+ *	This symbol, if defined, indicates that the accessx routine is
+ *	available to do extended access checks.
  */
-#$d_aintl HAS_AINTL		/**/
+#$d_accessx HAS_ACCESSX		/**/
 
 /* HAS_ASCTIME_R:
  *	This symbol, if defined, indicates that the asctime_r routine
@@ -1186,78 +1094,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_attribute_unused HASATTRIBUTE_UNUSED	/**/
 #$d_attribute_warn_unused_result HASATTRIBUTE_WARN_UNUSED_RESULT	/**/
 
-/* HAS_BUILTIN_CHOOSE_EXPR:
- *	Can we handle GCC builtin for compile-time ternary-like expressions
- */
-/* HAS_BUILTIN_EXPECT:
- *	Can we handle GCC builtin for telling that certain values are more
- *	likely
- */
-#$d_builtin_expect HAS_BUILTIN_EXPECT	/**/
-#$d_builtin_choose_expr HAS_BUILTIN_CHOOSE_EXPR	/**/
-
-/* HAS_C99_VARIADIC_MACROS:
- *	If defined, the compiler supports C99 variadic macros.
- */
-#$d_c99_variadic_macros	HAS_C99_VARIADIC_MACROS	/**/
-
-/* CASTI32:
- *	This symbol is defined if the C compiler can cast negative
- *	or large floating point numbers to 32-bit ints.
- */
-#$d_casti32	CASTI32		/**/
-
-/* CASTNEGFLOAT:
- *	This symbol is defined if the C compiler can cast negative
- *	numbers to unsigned longs, ints and shorts.
- */
-/* CASTFLAGS:
- *	This symbol contains flags that say what difficulties the compiler
- *	has casting odd floating values to unsigned long:
- *		0 = ok
- *		1 = couldn't cast < 0
- *		2 = couldn't cast >= 0x80000000
- *		4 = couldn't cast in argument expression list
- */
-#$d_castneg	CASTNEGFLOAT		/**/
-#define CASTFLAGS $castflags		/**/
-
-/* HAS_CLASS:
- *	This symbol, if defined, indicates that the class routine is
- *	available to classify doubles.  Available for example in AIX.
- *	The returned values are defined in <float.h> and are:
- *
- *	FP_PLUS_NORM	Positive normalized, nonzero
- *	FP_MINUS_NORM	Negative normalized, nonzero
- *	FP_PLUS_DENORM	Positive denormalized, nonzero
- *	FP_MINUS_DENORM	Negative denormalized, nonzero
- *	FP_PLUS_ZERO	+0.0
- *	FP_MINUS_ZERO	-0.0
- *	FP_PLUS_INF	+INF
- *	FP_MINUS_INF	-INF
- *	FP_NANS		Signaling Not a Number (NaNS)
- *	FP_NANQ		Quiet Not a Number (NaNQ)
- */
-#$d_class HAS_CLASS		/**/
-
-/* HAS_CLEARENV:
- *	This symbol, if defined, indicates that the clearenv () routine is
- *	available for use.
- */
-#$d_clearenv HAS_CLEARENV		/**/
-
-/* VOID_CLOSEDIR:
- *	This symbol, if defined, indicates that the closedir() routine
- *	does not return a value.
- */
-#$d_void_closedir VOID_CLOSEDIR		/**/
-
-/* HAS_STRUCT_CMSGHDR:
- *	This symbol, if defined, indicates that the struct cmsghdr
- *	is supported.
- */
-#$d_cmsghdr_s HAS_STRUCT_CMSGHDR	/**/
-
 /* HASCONST:
  *	This symbol, if defined, indicates that this C compiler knows about
  *	the const type. There is no need to actually test for that symbol
@@ -1269,18 +1105,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define const
 #endif
 
-/* HAS_COPYSIGNL:
- *	This symbol, if defined, indicates that the copysignl routine is
- *	available.  If aintl is also present we can emulate modfl.
- */
-#$d_copysignl HAS_COPYSIGNL		/**/
-
-/* USE_CPLUSPLUS:
- *	This symbol, if defined, indicates that a C++ compiler was
- *	used to compiled Perl and will be used to compile extensions.
- */
-#$d_cplusplus USE_CPLUSPLUS		/**/
-
 /* HAS_CRYPT:
  *	This symbol, if defined, indicates that the crypt routine is available
  *	to encrypt passwords and the like.
@@ -1337,34 +1161,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_ctime_r HAS_CTIME_R	   /**/
 #define CTIME_R_PROTO $ctime_r_proto	   /**/
 
-/* HAS_DBMINIT_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the dbminit() function.  Otherwise, it is up
- *	to the program to supply one.  A good guess is
- *		extern int dbminit(char *);
- */
-#$d_dbminitproto	HAS_DBMINIT_PROTO	/**/
-
-/* HAS_DIR_DD_FD:
- *	This symbol, if defined, indicates that the the DIR* dirstream
- *	structure contains a member variable named dd_fd.
- */
-#$d_dir_dd_fd HAS_DIR_DD_FD		/**/
-
-/* HAS_DIRFD:
- *	This manifest constant lets the C program know that dirfd
- *	is available.
- */
-#$d_dirfd HAS_DIRFD		/**/
-
-/* DLSYM_NEEDS_UNDERSCORE:
- *	This symbol, if defined, indicates that we need to prepend an
- *	underscore to the symbol name before calling dlsym().  This only
- *	makes sense if you *have* dlsym, which we will presume is the
- *	case if you're using dl_dlopen.xs.
- */
-#$d_dlsymun 	DLSYM_NEEDS_UNDERSCORE 	/**/
-
 /* SETUID_SCRIPTS_ARE_SECURE_NOW:
  *	This symbol, if defined, indicates that the bug that prevents
  *	setuid scripts from being secure is not present in this kernel.
@@ -1406,6 +1202,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_drand48proto	HAS_DRAND48_PROTO	/**/
 
+/* HAS_EACCESS:
+ *	This symbol, if defined, indicates that the eaccess routine is
+ *	available to do extended access checks.
+ */
+#$d_eaccess HAS_EACCESS		/**/
+
 /* HAS_ENDGRENT:
  *	This symbol, if defined, indicates that the getgrent routine is
  *	available for finalizing sequential access of the group database.
@@ -1520,210 +1322,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_endservent_r HAS_ENDSERVENT_R	   /**/
 #define ENDSERVENT_R_PROTO $endservent_r_proto	   /**/
 
-/* HAS_FAST_STDIO:
- *	This symbol, if defined, indicates that the "fast stdio"
- *	is available to manipulate the stdio buffers directly.
- */
-#$d_faststdio HAS_FAST_STDIO		/**/
-
-/* HAS_FCHDIR:
- *	This symbol, if defined, indicates that the fchdir routine is
- *	available to change directory using a file descriptor.
- */
-#$d_fchdir HAS_FCHDIR		/**/
-
-/* FCNTL_CAN_LOCK:
- *	This symbol, if defined, indicates that fcntl() can be used
- *	for file locking.  Normally on Unix systems this is defined.
- *	It may be undefined on VMS.
- */
-#$d_fcntl_can_lock FCNTL_CAN_LOCK		/**/
-
-/* HAS_FD_SET:
- *	This symbol, when defined, indicates presence of the fd_set typedef
- *	in <sys/types.h>
- */
-#$d_fd_set HAS_FD_SET	/**/
-
-/* HAS_FINITE:
- *	This symbol, if defined, indicates that the finite routine is
- *	available to check whether a double is finite (non-infinity non-NaN).
- */
-#$d_finite HAS_FINITE		/**/
-
-/* HAS_FINITEL:
- *	This symbol, if defined, indicates that the finitel routine is
- *	available to check whether a long double is finite
- *	(non-infinity non-NaN).
- */
-#$d_finitel HAS_FINITEL		/**/
-
 /* FLEXFILENAMES:
  *	This symbol, if defined, indicates that the system supports filenames
  *	longer than 14 characters.
  */
 #$d_flexfnam	FLEXFILENAMES		/**/
 
-/* HAS_FLOCK_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the flock() function.  Otherwise, it is up
- *	to the program to supply one.  A good guess is
- *		extern int flock(int, int);
- */
-#$d_flockproto	HAS_FLOCK_PROTO	/**/
-
-/* HAS_FP_CLASS:
- *	This symbol, if defined, indicates that the fp_class routine is
- *	available to classify doubles.  Available for example in Digital UNIX.
- *	The returned values are defined in <math.h> and are:
- *
- *	FP_SNAN           Signaling NaN (Not-a-Number)
- *	FP_QNAN           Quiet NaN (Not-a-Number)
- *	FP_POS_INF        +infinity
- *	FP_NEG_INF        -infinity
- *	FP_POS_NORM       Positive normalized
- *	FP_NEG_NORM       Negative normalized
- *	FP_POS_DENORM     Positive denormalized
- *	FP_NEG_DENORM     Negative denormalized
- *	FP_POS_ZERO       +0.0 (positive zero)
- *	FP_NEG_ZERO       -0.0 (negative zero)
- */
-#$d_fp_class HAS_FP_CLASS		/**/
-
-/* HAS_FPCLASS:
- *	This symbol, if defined, indicates that the fpclass routine is
- *	available to classify doubles.  Available for example in Solaris/SVR4.
- *	The returned values are defined in <ieeefp.h> and are:
- *
- *	FP_SNAN		signaling NaN
- *	FP_QNAN		quiet NaN
- *	FP_NINF		negative infinity
- *	FP_PINF		positive infinity
- *	FP_NDENORM	negative denormalized non-zero
- *	FP_PDENORM	positive denormalized non-zero
- *	FP_NZERO	negative zero
- *	FP_PZERO	positive zero
- *	FP_NNORM	negative normalized non-zero
- *	FP_PNORM	positive normalized non-zero
- */
-#$d_fpclass HAS_FPCLASS		/**/
-
-/* HAS_FPCLASSIFY:
- *	This symbol, if defined, indicates that the fpclassify routine is
- *	available to classify doubles.  Available for example in HP-UX.
- *	The returned values are defined in <math.h> and are
- *
- *           FP_NORMAL     Normalized
- *           FP_ZERO       Zero
- *           FP_INFINITE   Infinity
- *           FP_SUBNORMAL  Denormalized
- *           FP_NAN        NaN
- *
- */
-#$d_fpclassify HAS_FPCLASSIFY		/**/
-
-/* HAS_FPCLASSL:
- *	This symbol, if defined, indicates that the fpclassl routine is
- *	available to classify long doubles.  Available for example in IRIX.
- *	The returned values are defined in <ieeefp.h> and are:
- *
- *	FP_SNAN		signaling NaN
- *	FP_QNAN		quiet NaN
- *	FP_NINF		negative infinity
- *	FP_PINF		positive infinity
- *	FP_NDENORM	negative denormalized non-zero
- *	FP_PDENORM	positive denormalized non-zero
- *	FP_NZERO	negative zero
- *	FP_PZERO	positive zero
- *	FP_NNORM	negative normalized non-zero
- *	FP_PNORM	positive normalized non-zero
- */
-#$d_fpclassl HAS_FPCLASSL		/**/
-
-/* HAS_FPOS64_T:
- *	This symbol will be defined if the C compiler supports fpos64_t.
- */
-#$d_fpos64_t	HAS_FPOS64_T    	/**/
-
-/* HAS_FREXPL:
- *	This symbol, if defined, indicates that the frexpl routine is
- *	available to break a long double floating-point number into
- *	a normalized fraction and an integral power of 2.
- */
-#$d_frexpl HAS_FREXPL		/**/
-
-/* HAS_STRUCT_FS_DATA:
- *	This symbol, if defined, indicates that the struct fs_data
- *	to do statfs() is supported.
- */
-#$d_fs_data_s HAS_STRUCT_FS_DATA	/**/
-
-/* HAS_FSEEKO:
- *	This symbol, if defined, indicates that the fseeko routine is
- *	available to fseek beyond 32 bits (useful for ILP32 hosts).
- */
-#$d_fseeko HAS_FSEEKO		/**/
-
-/* HAS_FSTATFS:
- *	This symbol, if defined, indicates that the fstatfs routine is
- *	available to stat filesystems by file descriptors.
- */
-#$d_fstatfs HAS_FSTATFS		/**/
-
-/* HAS_FSYNC:
- *	This symbol, if defined, indicates that the fsync routine is
- *	available to write a file's modified data and attributes to
- *	permanent storage.
- */
-#$d_fsync HAS_FSYNC		/**/
-
-/* HAS_FTELLO:
- *	This symbol, if defined, indicates that the ftello routine is
- *	available to ftell beyond 32 bits (useful for ILP32 hosts).
- */
-#$d_ftello HAS_FTELLO		/**/
-
-/* HAS_FUTIMES:
- *	This symbol, if defined, indicates that the futimes routine is
- *	available to change file descriptor time stamps with struct timevals.
- */
-#$d_futimes HAS_FUTIMES		/**/
-
-/* Gconvert:
- *	This preprocessor macro is defined to convert a floating point
- *	number to a string without a trailing decimal point.  This
- *	emulates the behavior of sprintf("%g"), but is sometimes much more
- *	efficient.  If gconvert() is not available, but gcvt() drops the
- *	trailing decimal point, then gcvt() is used.  If all else fails,
- *	a macro using sprintf("%g") is used. Arguments for the Gconvert
- *	macro are: value, number of digits, whether trailing zeros should
- *	be retained, and the output buffer.
- *	The usual values are:
- *		d_Gconvert='gconvert((x),(n),(t),(b))'
- *		d_Gconvert='gcvt((x),(n),(b))'
- *		d_Gconvert='sprintf((b),"%.*g",(n),(x))'
- *	The last two assume trailing zeros should not be kept.
- */
-#define Gconvert(x,n,t,b) $d_Gconvert
-
-/* HAS_GETCWD:
- *	This symbol, if defined, indicates that the getcwd routine is
- *	available to get the current working directory.
- */
-#$d_getcwd HAS_GETCWD		/**/
-
-/* HAS_GETESPWNAM:
- *	This symbol, if defined, indicates that the getespwnam system call is
- *	available to retrieve enchanced (shadow) password entries by name.
- */
-#$d_getespwnam HAS_GETESPWNAM		/**/
-
-/* HAS_GETFSSTAT:
- *	This symbol, if defined, indicates that the getfsstat routine is
- *	available to stat filesystems in bulk.
- */
-#$d_getfsstat HAS_GETFSSTAT		/**/
-
 /* HAS_GETGRENT:
  *	This symbol, if defined, indicates that the getgrent routine is
  *	available for sequential access of the group database.
@@ -1863,12 +1467,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_gethostprotos	HAS_GETHOST_PROTOS	/**/
 
-/* HAS_GETITIMER:
- *	This symbol, if defined, indicates that the getitimer routine is
- *	available to return interval timers.
- */
-#$d_getitimer HAS_GETITIMER		/**/
-
 /* HAS_GETLOGIN_R:
  *	This symbol, if defined, indicates that the getlogin_r routine
  *	is available to getlogin re-entrantly.
@@ -1882,18 +1480,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_getlogin_r HAS_GETLOGIN_R	   /**/
 #define GETLOGIN_R_PROTO $getlogin_r_proto	   /**/
 
-/* HAS_GETMNT:
- *	This symbol, if defined, indicates that the getmnt routine is
- *	available to get filesystem mount info by filename.
- */
-#$d_getmnt HAS_GETMNT		/**/
-
-/* HAS_GETMNTENT:
- *	This symbol, if defined, indicates that the getmntent routine is
- *	available to iterate through mounted file systems to get their info.
- */
-#$d_getmntent HAS_GETMNTENT		/**/
-
 /* HAS_GETNETBYADDR:
  *	This symbol, if defined, indicates that the getnetbyaddr() routine is
  *	available to look up networks by their IP addresses.
@@ -1959,13 +1545,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_getnetprotos	HAS_GETNET_PROTOS	/**/
 
-/* HAS_GETPAGESIZE:
- *	This symbol, if defined, indicates that the getpagesize system call
- *	is available to get system page size, which is the granularity of
- *	many memory management calls.
- */
-#$d_getpagsz HAS_GETPAGESIZE		/**/
-
 /* HAS_GETPROTOENT:
  *	This symbol, if defined, indicates that the getprotoent() routine is
  *	available to look up protocols in some data base or another.
@@ -2041,12 +1620,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_getprotoprotos	HAS_GETPROTO_PROTOS	/**/
 
-/* HAS_GETPRPWNAM:
- *	This symbol, if defined, indicates that the getprpwnam system call is
- *	available to retrieve protected (shadow) password entries by name.
- */
-#$d_getprpwnam HAS_GETPRPWNAM		/**/
-
 /* HAS_GETPWENT:
  *	This symbol, if defined, indicates that the getpwent routine is
  *	available for sequential access of the passwd database.
@@ -2146,12 +1719,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_getservprotos	HAS_GETSERV_PROTOS	/**/
 
-/* HAS_GETSPNAM:
- *	This symbol, if defined, indicates that the getspnam system call is
- *	available to retrieve SysV shadow password entries by name.
- */
-#$d_getspnam HAS_GETSPNAM		/**/
-
 /* HAS_GETSPNAM_R:
  *	This symbol, if defined, indicates that the getspnam_r routine
  *	is available to getspnam re-entrantly.
@@ -2189,21 +1756,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_gmtime_r HAS_GMTIME_R	   /**/
 #define GMTIME_R_PROTO $gmtime_r_proto	   /**/
 
-/* HAS_GNULIBC:
- *	This symbol, if defined, indicates to the C program that 
- *	the GNU C library is being used.  A better check is to use
- *	the __GLIBC__ and __GLIBC_MINOR__ symbols supplied with glibc.
- */
-#$d_gnulibc HAS_GNULIBC  	/**/
-#if defined(HAS_GNULIBC) && !defined(_GNU_SOURCE)
-#   define _GNU_SOURCE
-#endif
-/* HAS_HASMNTOPT:
- *	This symbol, if defined, indicates that the hasmntopt routine is
- *	available to query the mount options of file systems.
- */
-#$d_hasmntopt HAS_HASMNTOPT		/**/
-
 /* HAS_HTONL:
  *	This symbol, if defined, indicates that the htonl() routine (and
  *	friends htons() ntohl() ntohs()) are available to do network
@@ -2229,70 +1781,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_htonl HAS_NTOHL		/**/
 #$d_htonl HAS_NTOHS		/**/
 
-/* HAS_ILOGBL:
- *	This symbol, if defined, indicates that the ilogbl routine is
- *	available.  If scalbnl is also present we can emulate frexpl.
- */
-#$d_ilogbl HAS_ILOGBL		/**/
-
-/* HAS_INT64_T:
- *     This symbol will defined if the C compiler supports int64_t.
- *     Usually the <inttypes.h> needs to be included, but sometimes
- *	<sys/types.h> is enough.
- */
-#$d_int64_t     HAS_INT64_T               /**/
-
-/* HAS_ISASCII:
- *	This manifest constant lets the C program know that isascii 
- *	is available.
- */
-#$d_isascii HAS_ISASCII		/**/
-
-/* HAS_ISFINITE:
- *	This symbol, if defined, indicates that the isfinite routine is
- *	available to check whether a double is finite (non-infinity non-NaN).
- */
-#$d_isfinite HAS_ISFINITE		/**/
-
-/* HAS_ISINF:
- *	This symbol, if defined, indicates that the isinf routine is
- *	available to check whether a double is an infinity.
- */
-#$d_isinf HAS_ISINF		/**/
-
-/* HAS_ISNAN:
- *	This symbol, if defined, indicates that the isnan routine is
- *	available to check whether a double is a NaN.
- */
-#$d_isnan HAS_ISNAN		/**/
-
-/* HAS_ISNANL:
- *	This symbol, if defined, indicates that the isnanl routine is
- *	available to check whether a long double is a NaN.
- */
-#$d_isnanl HAS_ISNANL		/**/
-
-/* HAS_LCHOWN:
- *	This symbol, if defined, indicates that the lchown routine is
- *	available to operate on a symbolic link (instead of following the
- *	link).
- */
-#$d_lchown HAS_LCHOWN		/**/
-
-/* HAS_LDBL_DIG:
- *	This symbol, if defined, indicates that this system's <float.h>
- *	or <limits.h> defines the symbol LDBL_DIG, which is the number
- *	of significant digits in a long double precision number. Unlike
- *	for DBL_DIG, there's no good guess for LDBL_DIG if it is undefined.
- */
-#$d_ldbl_dig HAS_LDBL_DIG 	/* */
-
-/* LIBM_LIB_VERSION:
- *	This symbol, if defined, indicates that libm exports _LIB_VERSION
- *	and that math.h defines the enum to manipulate it.
- */
-#$d_libm_lib_version LIBM_LIB_VERSION		/**/
-
 /* HAS_LOCALTIME_R:
  *	This symbol, if defined, indicates that the localtime_r routine
  *	is available to localtime re-entrantly.
@@ -2354,36 +1842,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_lseekproto	HAS_LSEEK_PROTO	/**/
 
-/* HAS_MADVISE:
- *	This symbol, if defined, indicates that the madvise system call is
- *	available to map a file into memory.
- */
-#$d_madvise HAS_MADVISE		/**/
-
-/* HAS_MALLOC_SIZE:
- *	This symbol, if defined, indicates that the malloc_size
- *	routine is available for use.
- */
-#$d_malloc_size HAS_MALLOC_SIZE		/**/
-
-/* HAS_MALLOC_GOOD_SIZE:
- *	This symbol, if defined, indicates that the malloc_good_size
- *	routine is available for use.
- */
-#$d_malloc_good_size HAS_MALLOC_GOOD_SIZE	/**/
-
 /* HAS_MEMCHR:
  *	This symbol, if defined, indicates that the memchr routine is available
  *	to locate characters within a C string.
  */
 #$d_memchr HAS_MEMCHR	/**/
 
-/* HAS_MKDTEMP:
- *	This symbol, if defined, indicates that the mkdtemp routine is
- *	available to exclusively create a uniquely named temporary directory.
- */
-#$d_mkdtemp HAS_MKDTEMP		/**/
-
 /* HAS_MKSTEMP:
  *	This symbol, if defined, indicates that the mkstemp routine is
  *	available to exclusively create and open a uniquely named
@@ -2391,13 +1855,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_mkstemp HAS_MKSTEMP		/**/
 
-/* HAS_MKSTEMPS:
- *	This symbol, if defined, indicates that the mkstemps routine is
- *	available to excluslvely create and open a uniquely named
- *	(with a suffix) temporary file.
- */
-#$d_mkstemps HAS_MKSTEMPS		/**/
-
 /* HAS_MMAP:
  *	This symbol, if defined, indicates that the mmap system call is
  *	available to map a file into memory.
@@ -2410,63 +1867,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_mmap HAS_MMAP		/**/
 #define Mmap_t $mmaptype	/**/
 
-/* HAS_MODFL:
- *	This symbol, if defined, indicates that the modfl routine is
- *	available to split a long double x into a fractional part f and
- *	an integer part i such that |f| < 1.0 and (f + i) = x.
- */
-/* HAS_MODFL_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the modfl() function.  Otherwise, it is up
- *	to the program to supply one.
- */
-/* HAS_MODFL_POW32_BUG:
- *	This symbol, if defined, indicates that the modfl routine is
- *	broken for long doubles >= pow(2, 32).
- *	For example from 4294967303.150000 one would get 4294967302.000000
- *	and 1.150000.  The bug has been seen in certain versions of glibc,
- *	release 2.2.2 is known to be okay.
- */
-#$d_modfl HAS_MODFL		/**/
-#$d_modflproto HAS_MODFL_PROTO		/**/
-#$d_modfl_pow32_bug HAS_MODFL_POW32_BUG		/**/
-
-/* HAS_MPROTECT:
- *	This symbol, if defined, indicates that the mprotect system call is
- *	available to modify the access protection of a memory mapped file.
- */
-#$d_mprotect HAS_MPROTECT		/**/
-
 /* HAS_MSG:
  *	This symbol, if defined, indicates that the entire msg*(2) library is
  *	supported (IPC mechanism based on message queues).
  */
 #$d_msg HAS_MSG		/**/
 
-/* HAS_STRUCT_MSGHDR:
- *	This symbol, if defined, indicates that the struct msghdr
- *	is supported.
- */
-#$d_msghdr_s HAS_STRUCT_MSGHDR	/**/
-
-/* HAS_NL_LANGINFO:
- *	This symbol, if defined, indicates that the nl_langinfo routine is
- *	available to return local data.  You will also need <langinfo.h>
- *	and therefore I_LANGINFO.
- */
-#$d_nl_langinfo HAS_NL_LANGINFO		/**/
-
-/* HAS_OFF64_T:
- *	This symbol will be defined if the C compiler supports off64_t.
- */
-#$d_off64_t	HAS_OFF64_T    		/**/
-
-/* HAS_OPEN3:
- *	This manifest constant lets the C program know that the three
- *	argument form of open(2) is available.
- */
-#$d_open3 HAS_OPEN3		/**/
-
 /* HAS_POLL:
  *	This symbol, if defined, indicates that the poll routine is
  *	available to poll active file descriptors. You may safely
@@ -2474,20 +1880,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_poll HAS_POLL		/**/
 
-/* HAS_PROCSELFEXE:
- *	This symbol is defined if PROCSELFEXE_PATH is a symlink
- *	to the absolute pathname of the executing program.
- */
-/* PROCSELFEXE_PATH:
- *	If HAS_PROCSELFEXE is defined this symbol is the filename
- *	of the symbolic link pointing to the absolute pathname of
- *	the executing program.
- */
-#$d_procselfexe HAS_PROCSELFEXE	/**/
-#if defined(HAS_PROCSELFEXE) && !defined(PROCSELFEXE_PATH)
-#define PROCSELFEXE_PATH	$procselfexe	/**/
-#endif
-
 /* OLD_PTHREAD_CREATE_JOINABLE:
  *	This symbol, if defined, indicates how to create pthread
  *	in joinable (aka undetached) state.  NOTE: not defined
@@ -2504,13 +1896,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_pthread_atfork HAS_PTHREAD_ATFORK		/**/
 
-/* HAS_PTHREAD_ATTR_SETSCOPE:
- *	This symbol, if defined, indicates that the pthread_attr_setscope
- *	system call is available to set the contention scope attribute of
- *	a thread attribute object.
- */
-#$d_pthread_attr_setscope HAS_PTHREAD_ATTR_SETSCOPE		/**/
-
 /* HAS_PTHREAD_YIELD:
  *	This symbol, if defined, indicates that the pthread_yield 
  *	routine is available to yield the execution of the current
@@ -2569,69 +1954,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_readdir_r HAS_READDIR_R	   /**/
 #define READDIR_R_PROTO $readdir_r_proto	   /**/
 
-/* HAS_READV:
- *	This symbol, if defined, indicates that the readv routine is
- *	available to do gather reads.  You will also need <sys/uio.h>
- *	and there I_SYSUIO.
- */
-#$d_readv HAS_READV		/**/
-
-/* HAS_RECVMSG:
- *	This symbol, if defined, indicates that the recvmsg routine is
- *	available to send structured socket messages.
- */
-#$d_recvmsg HAS_RECVMSG		/**/
-
-/* HAS_SAFE_BCOPY:
- *	This symbol, if defined, indicates that the bcopy routine is available
- *	to copy potentially overlapping memory blocks. Normally, you should
- *	probably use memmove() or memcpy(). If neither is defined, roll your
- *	own version.
- */
-#$d_safebcpy HAS_SAFE_BCOPY	/**/
-
-/* HAS_SAFE_MEMCPY:
- *	This symbol, if defined, indicates that the memcpy routine is available
- *	to copy potentially overlapping memory blocks.  If you need to
- *	copy overlapping memory blocks, you should check HAS_MEMMOVE and
- *	use memmove() instead, if available.
- */
-#$d_safemcpy HAS_SAFE_MEMCPY	/**/
-
-/* HAS_SANE_MEMCMP:
- *	This symbol, if defined, indicates that the memcmp routine is available
- *	and can be used to compare relative magnitudes of chars with their high
- *	bits set.  If it is not defined, roll your own version.
- */
-#$d_sanemcmp HAS_SANE_MEMCMP	/**/
-
-/* HAS_SBRK_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the sbrk() function.  Otherwise, it is up
- *	to the program to supply one.  Good guesses are
- *		extern void* sbrk(int);
- *		extern void* sbrk(size_t);
- */
-#$d_sbrkproto	HAS_SBRK_PROTO	/**/
-
-/* HAS_SCALBNL:
- *	This symbol, if defined, indicates that the scalbnl routine is
- *	available.  If ilogbl is also present we can emulate frexpl.
- */
-#$d_scalbnl HAS_SCALBNL		/**/
-
 /* HAS_SEM:
  *	This symbol, if defined, indicates that the entire sem*(2) library is
  *	supported.
  */
 #$d_sem HAS_SEM		/**/
 
-/* HAS_SENDMSG:
- *	This symbol, if defined, indicates that the sendmsg routine is
- *	available to send structured socket messages.
- */
-#$d_sendmsg HAS_SENDMSG		/**/
-
 /* HAS_SETGRENT:
  *	This symbol, if defined, indicates that the setgrent routine is
  *	available for initializing sequential access of the group database.
@@ -2677,12 +2005,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_sethostent_r HAS_SETHOSTENT_R	   /**/
 #define SETHOSTENT_R_PROTO $sethostent_r_proto	   /**/
 
-/* HAS_SETITIMER:
- *	This symbol, if defined, indicates that the setitimer routine is
- *	available to set interval timers.
- */
-#$d_setitimer HAS_SETITIMER		/**/
-
 /* HAS_SETLOCALE_R:
  *	This symbol, if defined, indicates that the setlocale_r routine
  *	is available to setlocale re-entrantly.
@@ -2733,12 +2055,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_setpgrp HAS_SETPGRP		/**/
 #$d_bsdsetpgrp USE_BSD_SETPGRP	/**/
 
-/* HAS_SETPROCTITLE:
- *	This symbol, if defined, indicates that the setproctitle routine is
- *	available to set process title.
- */
-#$d_setproctitle HAS_SETPROCTITLE		/**/
-
 /* HAS_SETPROTOENT_R:
  *	This symbol, if defined, indicates that the setprotoent_r routine
  *	is available to setprotoent re-entrantly.
@@ -2797,12 +2113,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_setvbuf HAS_SETVBUF		/**/
 
-/* USE_SFIO:
- *	This symbol, if defined, indicates that sfio should
- *	be used.
- */
-#$d_sfio	USE_SFIO		/**/
-
 /* HAS_SHM:
  *	This symbol, if defined, indicates that the entire shm*(2) library is
  *	supported.
@@ -2823,83 +2133,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define Shmat_t $shmattype	/**/
 #$d_shmatprototype HAS_SHMAT_PROTOTYPE	/**/
 
-/* HAS_SIGACTION:
- *	This symbol, if defined, indicates that Vr4's sigaction() routine
- *	is available.
- */
-#$d_sigaction HAS_SIGACTION	/**/
-
-/* HAS_SIGPROCMASK:
- *	This symbol, if defined, indicates that the sigprocmask
- *	system call is available to examine or change the signal mask
- *	of the calling process.
- */
-#$d_sigprocmask HAS_SIGPROCMASK		/**/
-
-/* HAS_SIGSETJMP:
- *	This variable indicates to the C program that the sigsetjmp()
- *	routine is available to save the calling process's registers
- *	and stack environment for later use by siglongjmp(), and
- *	to optionally save the process's signal mask.  See
- *	Sigjmp_buf, Sigsetjmp, and Siglongjmp.
- */
-/* Sigjmp_buf:
- *	This is the buffer type to be used with Sigsetjmp and Siglongjmp.
- */
-/* Sigsetjmp:
- *	This macro is used in the same way as sigsetjmp(), but will invoke
- *	traditional setjmp() if sigsetjmp isn't available.
- *	See HAS_SIGSETJMP.
- */
-/* Siglongjmp:
- *	This macro is used in the same way as siglongjmp(), but will invoke
- *	traditional longjmp() if siglongjmp isn't available.
- *	See HAS_SIGSETJMP.
- */
-#$d_sigsetjmp HAS_SIGSETJMP	/**/
-#ifdef HAS_SIGSETJMP
-#define Sigjmp_buf sigjmp_buf
-#define Sigsetjmp(buf,save_mask) sigsetjmp((buf),(save_mask))
-#define Siglongjmp(buf,retval) siglongjmp((buf),(retval))
-#else
-#define Sigjmp_buf jmp_buf
-#define Sigsetjmp(buf,save_mask) setjmp((buf))
-#define Siglongjmp(buf,retval) longjmp((buf),(retval))
-#endif
-
-/* USE_SITECUSTOMIZE:
- *	This symbol, if defined, indicates that sitecustomize should
- *	be used.
- */
-#ifndef USE_SITECUSTOMIZE
-#$usesitecustomize	USE_SITECUSTOMIZE		/**/
-#endif
-
-/* HAS_SNPRINTF:
- *	This symbol, if defined, indicates that the snprintf () library
- *	function is available for use.
- */
-/* HAS_VSNPRINTF:
- *	This symbol, if defined, indicates that the vsnprintf () library
- *	function is available for use.
- */
-#$d_snprintf HAS_SNPRINTF	/**/
-#$d_vsnprintf HAS_VSNPRINTF	/**/
-
-/* HAS_SOCKATMARK:
- *	This symbol, if defined, indicates that the sockatmark routine is
- *	available to test whether a socket is at the out-of-band mark.
- */
-#$d_sockatmark HAS_SOCKATMARK		/**/
-
-/* HAS_SOCKATMARK_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the sockatmark() function.  Otherwise, it is up
- *	to the program to supply one.  A good guess is
- *		extern int sockatmark(int);
- */
-#$d_sockatmarkproto	HAS_SOCKATMARK_PROTO	/**/
-
 /* HAS_SOCKET:
  *	This symbol, if defined, indicates that the BSD socket interface is
  *	supported.
@@ -2947,26 +2180,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_msg_proxy	HAS_MSG_PROXY	/**/
 #$d_scm_rights	HAS_SCM_RIGHTS	/**/
 
-/* HAS_SOCKS5_INIT:
- *	This symbol, if defined, indicates that the socks5_init routine is
- *	available to initialize SOCKS 5.
- */
-#$d_socks5_init HAS_SOCKS5_INIT		/**/
-
-/* SPRINTF_RETURNS_STRLEN:
- *	This variable defines whether sprintf returns the length of the string
- *	(as per the ANSI spec). Some C libraries retain compatibility with
- *	pre-ANSI C and return a pointer to the passed in buffer; for these
- *	this variable will be undef.
- */
-#$d_sprintf_returns_strlen SPRINTF_RETURNS_STRLEN	/**/
-
-/* HAS_SQRTL:
- *	This symbol, if defined, indicates that the sqrtl routine is
- *	available to do long double square roots.
- */
-#$d_sqrtl HAS_SQRTL		/**/
-
 /* HAS_SRAND48_R:
  *	This symbol, if defined, indicates that the srand48_r routine
  *	is available to srand48 re-entrantly.
@@ -2993,22 +2206,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_srandom_r HAS_SRANDOM_R	   /**/
 #define SRANDOM_R_PROTO $srandom_r_proto	   /**/
 
-/* HAS_SETRESGID_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the setresgid() function.  Otherwise, it is up
- *	to the program to supply one.  Good guesses are
- *		extern int setresgid(uid_t ruid, uid_t euid, uid_t suid);
- */
-#$d_sresgproto	HAS_SETRESGID_PROTO	/**/
-
-/* HAS_SETRESUID_PROTO:
- *	This symbol, if defined, indicates that the system provides
- *	a prototype for the setresuid() function.  Otherwise, it is up
- *	to the program to supply one.  Good guesses are
- *		extern int setresuid(uid_t ruid, uid_t euid, uid_t suid);
- */
-#$d_sresuproto	HAS_SETRESUID_PROTO	/**/
-
 /* USE_STAT_BLOCKS:
  *	This symbol is defined if this system has a stat structure declaring
  *	st_blksize and st_blocks.
@@ -3017,28 +2214,849 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_statblks USE_STAT_BLOCKS 	/**/
 #endif
 
-/* HAS_STRUCT_STATFS_F_FLAGS:
- *	This symbol, if defined, indicates that the struct statfs
- *	does have the f_flags member containing the mount flags of
- *	the filesystem containing the file.
- *	This kind of struct statfs is coming from <sys/mount.h> (BSD 4.3),
- *	not from <sys/statfs.h> (SYSV).  Older BSDs (like Ultrix) do not
- *	have statfs() and struct statfs, they have ustat() and getmnt()
- *	with struct ustat and struct fs_data.
+/* HAS_STRERROR:
+ *	This symbol, if defined, indicates that the strerror routine is
+ *	available to translate error numbers to strings. See the writeup
+ *	of Strerror() in this file before you try to define your own.
  */
-#$d_statfs_f_flags HAS_STRUCT_STATFS_F_FLAGS		/**/
+/* HAS_SYS_ERRLIST:
+ *	This symbol, if defined, indicates that the sys_errlist array is
+ *	available to translate error numbers to strings. The extern int
+ *	sys_nerr gives the size of that table.
+ */
+/* Strerror:
+ *	This preprocessor symbol is defined as a macro if strerror() is
+ *	not available to translate error numbers to strings but sys_errlist[]
+ *	array is there.
+ */
+#$d_strerror HAS_STRERROR		/**/
+#$d_syserrlst HAS_SYS_ERRLIST	/**/
+#define Strerror(e) $d_strerrm
 
-/* HAS_STRUCT_STATFS:
- *	This symbol, if defined, indicates that the struct statfs
- *	to do statfs() is supported.
+/* HAS_STRERROR_R:
+ *	This symbol, if defined, indicates that the strerror_r routine
+ *	is available to strerror re-entrantly.
  */
-#$d_statfs_s HAS_STRUCT_STATFS	/**/
+/* STRERROR_R_PROTO:
+ *	This symbol encodes the prototype of strerror_r.
+ *	It is zero if d_strerror_r is undef, and one of the
+ *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
+ *	is defined.
+ */
+#$d_strerror_r HAS_STRERROR_R	   /**/
+#define STRERROR_R_PROTO $strerror_r_proto	   /**/
 
-/* HAS_FSTATVFS:
- *	This symbol, if defined, indicates that the fstatvfs routine is
- *	available to stat filesystems by file descriptors.
+/* HAS_STRTOUL:
+ *	This symbol, if defined, indicates that the strtoul routine is
+ *	available to provide conversion of strings to unsigned long.
  */
-#$d_fstatvfs HAS_FSTATVFS		/**/
+#$d_strtoul HAS_STRTOUL	/**/
+
+/* HAS_TIME:
+ *	This symbol, if defined, indicates that the time() routine exists.
+ */
+/* Time_t:
+ *	This symbol holds the type returned by time(). It can be long,
+ *	or time_t on BSD sites (in which case <sys/types.h> should be
+ *	included).
+ */
+#$d_time HAS_TIME		/**/
+#define Time_t $timetype		/* Time type */
+
+/* HAS_TIMES:
+ *	This symbol, if defined, indicates that the times() routine exists.
+ *	Note that this became obsolete on some systems (SUNOS), which now
+ * use getrusage(). It may be necessary to include <sys/times.h>.
+ */
+#$d_times HAS_TIMES		/**/
+
+/* HAS_TMPNAM_R:
+ *	This symbol, if defined, indicates that the tmpnam_r routine
+ *	is available to tmpnam re-entrantly.
+ */
+/* TMPNAM_R_PROTO:
+ *	This symbol encodes the prototype of tmpnam_r.
+ *	It is zero if d_tmpnam_r is undef, and one of the
+ *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
+ *	is defined.
+ */
+#$d_tmpnam_r HAS_TMPNAM_R	   /**/
+#define TMPNAM_R_PROTO $tmpnam_r_proto	   /**/
+
+/* HAS_TTYNAME_R:
+ *	This symbol, if defined, indicates that the ttyname_r routine
+ *	is available to ttyname re-entrantly.
+ */
+/* TTYNAME_R_PROTO:
+ *	This symbol encodes the prototype of ttyname_r.
+ *	It is zero if d_ttyname_r is undef, and one of the
+ *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
+ *	is defined.
+ */
+#$d_ttyname_r HAS_TTYNAME_R	   /**/
+#define TTYNAME_R_PROTO $ttyname_r_proto	   /**/
+
+/* HAS_UNION_SEMUN:
+ *	This symbol, if defined, indicates that the union semun is
+ *	defined by including <sys/sem.h>.  If not, the user code
+ *	probably needs to define it as:
+ *	union semun {
+ *	    int val;
+ *	    struct semid_ds *buf;
+ *	    unsigned short *array;
+ *	}
+ */
+/* USE_SEMCTL_SEMUN:
+ *	This symbol, if defined, indicates that union semun is
+ *	used for semctl IPC_STAT.
+ */
+/* USE_SEMCTL_SEMID_DS:
+ *	This symbol, if defined, indicates that struct semid_ds * is
+ *	used for semctl IPC_STAT.
+ */
+#$d_union_semun HAS_UNION_SEMUN	/**/
+#$d_semctl_semun USE_SEMCTL_SEMUN	/**/
+#$d_semctl_semid_ds USE_SEMCTL_SEMID_DS	/**/
+
+/* HAS_VFORK:
+ *	This symbol, if defined, indicates that vfork() exists.
+ */
+#$d_vfork HAS_VFORK	/**/
+
+/* HAS_PSEUDOFORK:
+ *	This symbol, if defined, indicates that an emulation of the
+ *	fork routine is available.
+ */
+#$d_pseudofork HAS_PSEUDOFORK	/**/
+
+/* Signal_t:
+ *	This symbol's value is either "void" or "int", corresponding to the
+ *	appropriate return type of a signal handler.  Thus, you can declare
+ *	a signal handler using "Signal_t (*handler)()", and define the
+ *	handler using "Signal_t handler(sig)".
+ */
+#define Signal_t $signal_t	/* Signal handler's return type */
+
+/* Fpos_t:
+ *	This symbol holds the type used to declare file positions in libc.
+ *	It can be fpos_t, long, uint, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Fpos_t $fpostype		/* File position type */
+
+/* Gid_t_f:
+ *	This symbol defines the format string used for printing a Gid_t.
+ */
+#define	Gid_t_f		$gidformat		/**/
+
+/* Gid_t_sign:
+ *	This symbol holds the signedess of a Gid_t.
+ *	1 for unsigned, -1 for signed.
+ */
+#define Gid_t_sign	$gidsign		/* GID sign */
+
+/* Gid_t_size:
+ *	This symbol holds the size of a Gid_t in bytes.
+ */
+#define Gid_t_size $gidsize		/* GID size */
+
+/* Gid_t:
+ *	This symbol holds the return type of getgid() and the type of
+ *	argument to setrgid() and related functions.  Typically,
+ *	it is the type of group ids in the kernel. It can be int, ushort,
+ *	gid_t, etc... It may be necessary to include <sys/types.h> to get
+ *	any typedef'ed information.
+ */
+#define Gid_t $gidtype		/* Type for getgid(), etc... */
+
+/* Groups_t:
+ *	This symbol holds the type used for the second argument to
+ *	getgroups() and setgroups().  Usually, this is the same as
+ *	gidtype (gid_t) , but sometimes it isn't.
+ *	It can be int, ushort, gid_t, etc... 
+ *	It may be necessary to include <sys/types.h> to get any 
+ *	typedef'ed information.  This is only required if you have
+ *	getgroups() or setgroups()..
+ */
+#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
+#define Groups_t $groupstype	/* Type for 2nd arg to [sg]etgroups() */
+#endif
+
+/* I_GRP:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <grp.h>.
+ */
+/* GRPASSWD:
+ *	This symbol, if defined, indicates to the C program that struct group
+ *	in <grp.h> contains gr_passwd.
+ */
+#$i_grp I_GRP		/**/
+#$d_grpasswd GRPASSWD	/**/
+
+/* I_MACH_CTHREADS:
+ *     This symbol, if defined, indicates to the C program that it should
+ *     include <mach/cthreads.h>.
+ */
+#$i_machcthr   I_MACH_CTHREADS	/**/
+
+/* I_NDBM:
+ *	This symbol, if defined, indicates that <ndbm.h> exists and should
+ *	be included.
+ */
+#$i_ndbm I_NDBM	/**/
+
+/* I_NETDB:
+ *	This symbol, if defined, indicates that <netdb.h> exists and
+ *	should be included.
+ */
+#$i_netdb I_NETDB		/**/
+
+/* I_PTHREAD:
+ *     This symbol, if defined, indicates to the C program that it should
+ *     include <pthread.h>.
+ */
+#$i_pthread   I_PTHREAD	/**/
+
+/* I_PWD:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <pwd.h>.
+ */
+/* PWQUOTA:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_quota.
+ */
+/* PWAGE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_age.
+ */
+/* PWCHANGE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_change.
+ */
+/* PWCLASS:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_class.
+ */
+/* PWEXPIRE:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_expire.
+ */
+/* PWCOMMENT:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_comment.
+ */
+/* PWGECOS:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_gecos.
+ */
+/* PWPASSWD:
+ *	This symbol, if defined, indicates to the C program that struct passwd
+ *	contains pw_passwd.
+ */
+#$i_pwd I_PWD		/**/
+#$d_pwquota PWQUOTA	/**/
+#$d_pwage PWAGE	/**/
+#$d_pwchange PWCHANGE	/**/
+#$d_pwclass PWCLASS	/**/
+#$d_pwexpire PWEXPIRE	/**/
+#$d_pwcomment PWCOMMENT	/**/
+#$d_pwgecos PWGECOS	/**/
+#$d_pwpasswd PWPASSWD	/**/
+
+/* I_SYS_ACCESS:
+ *     This symbol, if defined, indicates to the C program that it should
+ *     include <sys/access.h>.
+ */
+#$i_sysaccess   I_SYS_ACCESS                /**/
+
+/* I_SYS_SECURITY:
+ *     This symbol, if defined, indicates to the C program that it should
+ *     include <sys/security.h>.
+ */
+#$i_syssecrt   I_SYS_SECURITY	/**/
+
+/* I_SYSUIO:
+ *	This symbol, if defined, indicates that <sys/uio.h> exists and
+ *	should be included.
+ */
+#$i_sysuio	I_SYSUIO		/**/
+
+/* I_STDARG:
+ *	This symbol, if defined, indicates that <stdarg.h> exists and should
+ *	be included.
+ */
+/* I_VARARGS:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <varargs.h>.
+ */
+#$i_stdarg I_STDARG		/**/
+#$i_varargs I_VARARGS	/**/
+
+/* PERL_INC_VERSION_LIST:
+ *	This variable specifies the list of subdirectories in over
+ *	which perl.c:incpush() and lib/lib.pm will automatically
+ *	search when adding directories to @INC, in a format suitable
+ *	for a C initialization string.  See the inc_version_list entry
+ *	in Porting/Glossary for more details.
+ */
+#$d_inc_version_list PERL_INC_VERSION_LIST $inc_version_list_init		/**/
+
+/* INSTALL_USR_BIN_PERL:
+ *	This symbol, if defined, indicates that Perl is to be installed
+ * 	also as /usr/bin/perl.
+ */
+#$installusrbinperl INSTALL_USR_BIN_PERL	/**/
+
+/* Off_t:
+ *	This symbol holds the type used to declare offsets in the kernel.
+ *	It can be int, long, off_t, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+/* LSEEKSIZE:
+ *	This symbol holds the number of bytes used by the Off_t.
+ */
+/* Off_t_size:
+ *	This symbol holds the number of bytes used by the Off_t.
+ */
+#define Off_t $lseektype		/* <offset> type */
+#define LSEEKSIZE $lseeksize		/* <offset> size */
+#define Off_t_size $lseeksize	/* <offset> size */
+
+/* Free_t:
+ *	This variable contains the return type of free().  It is usually
+ * void, but occasionally int.
+ */
+/* Malloc_t:
+ *	This symbol is the type of pointer returned by malloc and realloc.
+ */
+#define Malloc_t $malloctype			/**/
+#define Free_t $freetype			/**/
+
+/* PERL_MALLOC_WRAP:
+ *	This symbol, if defined, indicates that we'd like malloc wrap checks.
+ */
+#$usemallocwrap PERL_MALLOC_WRAP		/**/
+
+/* MYMALLOC:
+ *	This symbol, if defined, indicates that we're using our own malloc.
+ */
+#$d_mymalloc MYMALLOC			/**/
+
+/* Mode_t:
+ *	This symbol holds the type used to declare file modes 
+ *	for systems calls.  It is usually mode_t, but may be
+ *	int or unsigned short.  It may be necessary to include <sys/types.h>
+ *	to get any typedef'ed information.
+ */
+#define Mode_t $modetype	 /* file mode parameter for system calls */
+
+/* Netdb_host_t:
+ *	This symbol holds the type used for the 1st argument
+ *	to gethostbyaddr().
+ */
+/* Netdb_hlen_t:
+ *	This symbol holds the type used for the 2nd argument
+ *	to gethostbyaddr().
+ */
+/* Netdb_name_t:
+ *	This symbol holds the type used for the argument to
+ *	gethostbyname().
+ */
+/* Netdb_net_t:
+ *	This symbol holds the type used for the 1st argument to
+ *	getnetbyaddr().
+ */
+#define Netdb_host_t		$netdb_host_type /**/
+#define Netdb_hlen_t		$netdb_hlen_type /**/
+#define Netdb_name_t		$netdb_name_type /**/
+#define Netdb_net_t		$netdb_net_type /**/
+
+/* PERL_OTHERLIBDIRS:
+ *	This variable contains a colon-separated set of paths for the perl
+ *	binary to search for additional library files or modules.
+ *	These directories will be tacked to the end of @INC.
+ *	Perl will automatically search below each path for version-
+ *	and architecture-specific directories.  See PERL_INC_VERSION_LIST
+ *	for more details.
+ */
+#$d_perl_otherlibdirs PERL_OTHERLIBDIRS "$otherlibdirs"		/**/
+
+/* Pid_t:
+ *	This symbol holds the type used to declare process ids in the kernel.
+ *	It can be int, uint, pid_t, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Pid_t $pidtype		/* PID type */
+
+/* PRIVLIB:
+ *	This symbol contains the name of the private library for this package.
+ *	The library is private in the sense that it needn't be in anyone's
+ *	execution path, but it should be accessible by the world.  The program
+ *	should be prepared to do ~ expansion.
+ */
+/* PRIVLIB_EXP:
+ *	This symbol contains the ~name expanded version of PRIVLIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#define PRIVLIB "$privlib"		/**/
+#define PRIVLIB_EXP "$privlibexp"		/**/
+
+/* CAN_PROTOTYPE:
+ *	If defined, this macro indicates that the C compiler can handle
+ *	function prototypes.
+ */
+/* _:
+ *	This macro is used to declare function parameters for folks who want
+ *	to make declarations with prototypes using a different style than
+ *	the above macros.  Use double parentheses.  For example:
+ *
+ *		int main _((int argc, char *argv[]));
+ */
+#$prototype	CAN_PROTOTYPE	/**/
+#ifdef CAN_PROTOTYPE
+#define	_(args) args
+#else
+#define	_(args) ()
+#endif
+
+/* Select_fd_set_t:
+ *	This symbol holds the type used for the 2nd, 3rd, and 4th
+ *	arguments to select.  Usually, this is 'fd_set *', if HAS_FD_SET
+ *	is defined, and 'int *' otherwise.  This is only useful if you 
+ *	have select(), of course.
+ */
+#define Select_fd_set_t 	$selecttype	/**/
+
+/* SH_PATH:
+ *	This symbol contains the full pathname to the shell used on this
+ *	on this system to execute Bourne shell scripts.  Usually, this will be
+ *	/bin/sh, though it's possible that some systems will have /bin/ksh,
+ *	/bin/pdksh, /bin/ash, /bin/bash, or even something such as
+ *	D:/bin/sh.exe.
+ */
+#define SH_PATH "$sh"  /**/
+
+/* SIG_NAME:
+ *	This symbol contains a list of signal names in order of
+ *	signal number. This is intended
+ *	to be used as a static array initialization, like this:
+ *		char *sig_name[] = { SIG_NAME };
+ *	The signals in the list are separated with commas, and each signal
+ *	is surrounded by double quotes. There is no leading SIG in the signal
+ *	name, i.e. SIGQUIT is known as "QUIT".
+ *	Gaps in the signal numbers (up to NSIG) are filled in with NUMnn,
+ *	etc., where nn is the actual signal number (e.g. NUM37).
+ *	The signal number for sig_name[i] is stored in sig_num[i].
+ *	The last element is 0 to terminate the list with a NULL.  This
+ *	corresponds to the 0 at the end of the sig_name_init list.
+ *	Note that this variable is initialized from the sig_name_init,
+ *	not from sig_name (which is unused).
+ */
+/* SIG_NUM:
+ *	This symbol contains a list of signal numbers, in the same order as the
+ *	SIG_NAME list. It is suitable for static array initialization, as in:
+ *		int sig_num[] = { SIG_NUM };
+ *	The signals in the list are separated with commas, and the indices
+ *	within that list and the SIG_NAME list match, so it's easy to compute
+ *	the signal name from a number or vice versa at the price of a small
+ *	dynamic linear lookup. 
+ *	Duplicates are allowed, but are moved to the end of the list.
+ *	The signal number corresponding to sig_name[i] is sig_number[i].
+ *	if (i < NSIG) then sig_number[i] == i.  
+ *	The last element is 0, corresponding to the 0 at the end of
+ *	the sig_name_init list.
+ *	Note that this variable is initialized from the sig_num_init,
+ *	not from sig_num (which is unused).
+ */
+/* SIG_SIZE:
+ *	This variable contains the number of elements of the SIG_NAME
+ *	and SIG_NUM arrays, excluding the final NULL entry.
+ */
+#define SIG_NAME $sig_name_init		/**/
+#define SIG_NUM  $sig_num_init		/**/
+#define SIG_SIZE $sig_size			/**/
+
+/* SITEARCH:
+ *	This symbol contains the name of the private library for this package.
+ *	The library is private in the sense that it needn't be in anyone's
+ *	execution path, but it should be accessible by the world.  The program
+ *	should be prepared to do ~ expansion.
+ *	The standard distribution will put nothing in this directory.
+ *	After perl has been installed, users may install their own local
+ *	architecture-dependent modules in this directory with
+ *		MakeMaker Makefile.PL
+ *	or equivalent.  See INSTALL for details.
+ */
+/* SITEARCH_EXP:
+ *	This symbol contains the ~name expanded version of SITEARCH, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#$d_sitearch SITEARCH "$sitearch"		/**/
+#$d_sitearch SITEARCH_EXP "$sitearchexp"		/**/
+
+/* SITELIB:
+ *	This symbol contains the name of the private library for this package.
+ *	The library is private in the sense that it needn't be in anyone's
+ *	execution path, but it should be accessible by the world.  The program
+ *	should be prepared to do ~ expansion.
+ *	The standard distribution will put nothing in this directory.
+ *	After perl has been installed, users may install their own local
+ *	architecture-independent modules in this directory with
+ *		MakeMaker Makefile.PL
+ *	or equivalent.  See INSTALL for details.
+ */
+/* SITELIB_EXP:
+ *	This symbol contains the ~name expanded version of SITELIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+/* SITELIB_STEM:
+ *	This define is SITELIB_EXP with any trailing version-specific component
+ *	removed.  The elements in inc_version_list (inc_version_list.U) can
+ *	be tacked onto this variable to generate a list of directories to search.
+ */
+#define SITELIB "$sitelib"		/**/
+#define SITELIB_EXP "$sitelibexp"		/**/
+#define SITELIB_STEM "$sitelib_stem"		/**/
+
+/* Size_t_size:
+ *	This symbol holds the size of a Size_t in bytes.
+ */
+#define Size_t_size $sizesize		/* */
+
+/* Size_t:
+ *	This symbol holds the type used to declare length parameters
+ *	for string functions.  It is usually size_t, but may be
+ *	unsigned long, int, etc.  It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Size_t $sizetype	 /* length paramater for string functions */
+
+/* Sock_size_t:
+ *	This symbol holds the type used for the size argument of
+ *	various socket calls (just the base type, not the pointer-to).
+ */
+#define Sock_size_t		$socksizetype /**/
+
+/* STDCHAR:
+ *	This symbol is defined to be the type of char used in stdio.h.
+ *	It has the values "unsigned char" or "char".
+ */
+#define STDCHAR $stdchar	/**/
+
+/* Uid_t_f:
+ *	This symbol defines the format string used for printing a Uid_t.
+ */
+#define	Uid_t_f		$uidformat		/**/
+
+/* Uid_t_sign:
+ *	This symbol holds the signedess of a Uid_t.
+ *	1 for unsigned, -1 for signed.
+ */
+#define Uid_t_sign	$uidsign		/* UID sign */
+
+/* Uid_t_size:
+ *	This symbol holds the size of a Uid_t in bytes.
+ */
+#define Uid_t_size $uidsize		/* UID size */
+
+/* Uid_t:
+ *	This symbol holds the type used to declare user ids in the kernel.
+ *	It can be int, ushort, uid_t, etc... It may be necessary to include
+ *	<sys/types.h> to get any typedef'ed information.
+ */
+#define Uid_t $uidtype		/* UID type */
+
+/* USE_ITHREADS:
+ *	This symbol, if defined, indicates that Perl should be built to
+ *	use the interpreter-based threading implementation.
+ */
+/* USE_5005THREADS:
+ *	This symbol, if defined, indicates that Perl should be built to
+ *	use the 5.005-based threading implementation.
+ *	Only valid up to 5.8.x.
+ */
+/* OLD_PTHREADS_API:
+ *	This symbol, if defined, indicates that Perl should
+ *	be built to use the old draft POSIX threads API.
+ */
+/* USE_REENTRANT_API:
+ *	This symbol, if defined, indicates that Perl should
+ *	try to use the various _r versions of library functions.
+ *	This is extremely experimental.
+ */
+#$use5005threads	USE_5005THREADS		/**/
+#$useithreads	USE_ITHREADS		/**/
+#if defined(USE_5005THREADS) && !defined(USE_ITHREADS)
+#define		USE_THREADS		/* until src is revised*/
+#endif
+#$d_oldpthreads	OLD_PTHREADS_API		/**/
+#$usereentrant	USE_REENTRANT_API	/**/
+
+/* PERL_VENDORARCH:
+ *	If defined, this symbol contains the name of a private library.
+ *	The library is private in the sense that it needn't be in anyone's
+ *	execution path, but it should be accessible by the world.
+ *	It may have a ~ on the front.
+ *	The standard distribution will put nothing in this directory.
+ *	Vendors who distribute perl may wish to place their own
+ *	architecture-dependent modules and extensions in this directory with
+ *		MakeMaker Makefile.PL INSTALLDIRS=vendor
+ *	or equivalent.  See INSTALL for details.
+ */
+/* PERL_VENDORARCH_EXP:
+ *	This symbol contains the ~name expanded version of PERL_VENDORARCH, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+#$d_vendorarch PERL_VENDORARCH "$vendorarch"		/**/
+#$d_vendorarch PERL_VENDORARCH_EXP "$vendorarchexp"		/**/
+
+/* PERL_VENDORLIB_EXP:
+ *	This symbol contains the ~name expanded version of VENDORLIB, to be used
+ *	in programs that are not prepared to deal with ~ expansion at run-time.
+ */
+/* PERL_VENDORLIB_STEM:
+ *	This define is PERL_VENDORLIB_EXP with any trailing version-specific component
+ *	removed.  The elements in inc_version_list (inc_version_list.U) can
+ *	be tacked onto this variable to generate a list of directories to search.
+ */
+#$d_vendorlib PERL_VENDORLIB_EXP "$vendorlibexp"		/**/
+#$d_vendorlib PERL_VENDORLIB_STEM "$vendorlib_stem"		/**/
+
+/* VOIDFLAGS:
+ *	This symbol indicates how much support of the void type is given by this
+ *	compiler.  What various bits mean:
+ *
+ *	    1 = supports declaration of void
+ *	    2 = supports arrays of pointers to functions returning void
+ *	    4 = supports comparisons between pointers to void functions and
+ *		    addresses of void functions
+ *	    8 = suports declaration of generic void pointers
+ *
+ *	The package designer should define VOIDUSED to indicate the requirements
+ *	of the package.  This can be done either by #defining VOIDUSED before
+ *	including config.h, or by defining defvoidused in Myinit.U.  If the
+ *	latter approach is taken, only those flags will be tested.  If the
+ *	level of void support necessary is not present, defines void to int.
+ */
+#ifndef VOIDUSED
+#define VOIDUSED $defvoidused
+#endif
+#define VOIDFLAGS $voidflags
+#if (VOIDFLAGS & VOIDUSED) != VOIDUSED
+#define void int		/* is void to be avoided? */
+#define M_VOID			/* Xenix strikes again */
+#endif
+
+/* USE_CROSS_COMPILE:
+ *	This symbol, if defined, indicates that Perl is being cross-compiled.
+ */
+/* PERL_TARGETARCH:
+ *	This symbol, if defined, indicates the target architecture
+ *	Perl has been cross-compiled to.  Undefined if not a cross-compile.
+ */
+#ifndef USE_CROSS_COMPILE
+#$usecrosscompile	USE_CROSS_COMPILE	/**/
+#define	PERL_TARGETARCH	"$targetarch"	/**/
+#endif
+
+/* MEM_ALIGNBYTES:
+ *	This symbol contains the number of bytes required to align a
+ *	double, or a long double when applicable. Usual values are 2,
+ *	4 and 8. The default is eight, for safety.
+ */
+#if defined(USE_CROSS_COMPILE) || defined(MULTIARCH)
+#  define MEM_ALIGNBYTES 8
+#else
+#define MEM_ALIGNBYTES $alignbytes
+#endif
+
+/* BYTEORDER:
+ *	This symbol holds the hexadecimal constant defined in byteorder,
+ *	in a UV, i.e. 0x1234 or 0x4321 or 0x12345678, etc...
+ *	If the compiler supports cross-compiling or multiple-architecture
+ *	binaries (eg. on NeXT systems), use compiler-defined macros to
+ *	determine the byte order.
+ *	On NeXT 3.2 (and greater), you can build "Fat" Multiple Architecture
+ *	Binaries (MAB) on either big endian or little endian machines.
+ *	The endian-ness is available at compile-time.  This only matters
+ *	for perl, where the config.h can be generated and installed on 
+ *	one system, and used by a different architecture to build an
+ *	extension.  Older versions of NeXT that might not have
+ *	defined either *_ENDIAN__ were all on Motorola 680x0 series,
+ *	so the default case (for NeXT) is big endian to catch them. 
+ *	This might matter for NeXT 3.0.
+ */
+#if defined(USE_CROSS_COMPILE) || defined(MULTIARCH)
+#  ifdef __LITTLE_ENDIAN__
+#    if LONGSIZE == 4
+#      define BYTEORDER 0x1234
+#    else
+#      if LONGSIZE == 8
+#        define BYTEORDER 0x12345678
+#      endif
+#    endif
+#  else
+#    ifdef __BIG_ENDIAN__
+#      if LONGSIZE == 4
+#        define BYTEORDER 0x4321
+#      else
+#        if LONGSIZE == 8
+#          define BYTEORDER 0x87654321
+#        endif
+#      endif
+#    endif
+#  endif
+#  if !defined(BYTEORDER) && (defined(NeXT) || defined(__NeXT__))
+#    define BYTEORDER 0x4321
+#  endif
+#else
+#define BYTEORDER 0x$byteorder	/* large digits for MSB */
+#endif /* NeXT */
+
+/* CASTI32:
+ *	This symbol is defined if the C compiler can cast negative
+ *	or large floating point numbers to 32-bit ints.
+ */
+#$d_casti32	CASTI32		/**/
+
+/* CASTNEGFLOAT:
+ *	This symbol is defined if the C compiler can cast negative
+ *	numbers to unsigned longs, ints and shorts.
+ */
+/* CASTFLAGS:
+ *	This symbol contains flags that say what difficulties the compiler
+ *	has casting odd floating values to unsigned long:
+ *		0 = ok
+ *		1 = couldn't cast < 0
+ *		2 = couldn't cast >= 0x80000000
+ *		4 = couldn't cast in argument expression list
+ */
+#$d_castneg	CASTNEGFLOAT		/**/
+#define CASTFLAGS $castflags		/**/
+
+/* VOID_CLOSEDIR:
+ *	This symbol, if defined, indicates that the closedir() routine
+ *	does not return a value.
+ */
+#$d_void_closedir VOID_CLOSEDIR		/**/
+
+/* HAS_FD_SET:
+ *	This symbol, when defined, indicates presence of the fd_set typedef
+ *	in <sys/types.h>
+ */
+#$d_fd_set HAS_FD_SET	/**/
+
+/* Gconvert:
+ *	This preprocessor macro is defined to convert a floating point
+ *	number to a string without a trailing decimal point.  This
+ *	emulates the behavior of sprintf("%g"), but is sometimes much more
+ *	efficient.  If gconvert() is not available, but gcvt() drops the
+ *	trailing decimal point, then gcvt() is used.  If all else fails,
+ *	a macro using sprintf("%g") is used. Arguments for the Gconvert
+ *	macro are: value, number of digits, whether trailing zeros should
+ *	be retained, and the output buffer.
+ *	The usual values are:
+ *		d_Gconvert='gconvert((x),(n),(t),(b))'
+ *		d_Gconvert='gcvt((x),(n),(b))'
+ *		d_Gconvert='sprintf((b),"%.*g",(n),(x))'
+ *	The last two assume trailing zeros should not be kept.
+ */
+#define Gconvert(x,n,t,b) $d_Gconvert
+
+/* HAS_GETPAGESIZE:
+ *	This symbol, if defined, indicates that the getpagesize system call
+ *	is available to get system page size, which is the granularity of
+ *	many memory management calls.
+ */
+#$d_getpagsz HAS_GETPAGESIZE		/**/
+
+/* HAS_GNULIBC:
+ *	This symbol, if defined, indicates to the C program that 
+ *	the GNU C library is being used.  A better check is to use
+ *	the __GLIBC__ and __GLIBC_MINOR__ symbols supplied with glibc.
+ */
+#$d_gnulibc HAS_GNULIBC  	/**/
+#if defined(HAS_GNULIBC) && !defined(_GNU_SOURCE)
+#   define _GNU_SOURCE
+#endif
+/* HAS_ISASCII:
+ *	This manifest constant lets the C program know that isascii 
+ *	is available.
+ */
+#$d_isascii HAS_ISASCII		/**/
+
+/* HAS_LCHOWN:
+ *	This symbol, if defined, indicates that the lchown routine is
+ *	available to operate on a symbolic link (instead of following the
+ *	link).
+ */
+#$d_lchown HAS_LCHOWN		/**/
+
+/* HAS_OPEN3:
+ *	This manifest constant lets the C program know that the three
+ *	argument form of open(2) is available.
+ */
+#$d_open3 HAS_OPEN3		/**/
+
+/* HAS_SAFE_BCOPY:
+ *	This symbol, if defined, indicates that the bcopy routine is available
+ *	to copy potentially overlapping memory blocks. Normally, you should
+ *	probably use memmove() or memcpy(). If neither is defined, roll your
+ *	own version.
+ */
+#$d_safebcpy HAS_SAFE_BCOPY	/**/
+
+/* HAS_SAFE_MEMCPY:
+ *	This symbol, if defined, indicates that the memcpy routine is available
+ *	to copy potentially overlapping memory blocks.  If you need to
+ *	copy overlapping memory blocks, you should check HAS_MEMMOVE and
+ *	use memmove() instead, if available.
+ */
+#$d_safemcpy HAS_SAFE_MEMCPY	/**/
+
+/* HAS_SANE_MEMCMP:
+ *	This symbol, if defined, indicates that the memcmp routine is available
+ *	and can be used to compare relative magnitudes of chars with their high
+ *	bits set.  If it is not defined, roll your own version.
+ */
+#$d_sanemcmp HAS_SANE_MEMCMP	/**/
+
+/* HAS_SIGACTION:
+ *	This symbol, if defined, indicates that Vr4's sigaction() routine
+ *	is available.
+ */
+#$d_sigaction HAS_SIGACTION	/**/
+
+/* HAS_SIGSETJMP:
+ *	This variable indicates to the C program that the sigsetjmp()
+ *	routine is available to save the calling process's registers
+ *	and stack environment for later use by siglongjmp(), and
+ *	to optionally save the process's signal mask.  See
+ *	Sigjmp_buf, Sigsetjmp, and Siglongjmp.
+ */
+/* Sigjmp_buf:
+ *	This is the buffer type to be used with Sigsetjmp and Siglongjmp.
+ */
+/* Sigsetjmp:
+ *	This macro is used in the same way as sigsetjmp(), but will invoke
+ *	traditional setjmp() if sigsetjmp isn't available.
+ *	See HAS_SIGSETJMP.
+ */
+/* Siglongjmp:
+ *	This macro is used in the same way as siglongjmp(), but will invoke
+ *	traditional longjmp() if siglongjmp isn't available.
+ *	See HAS_SIGSETJMP.
+ */
+#$d_sigsetjmp HAS_SIGSETJMP	/**/
+#ifdef HAS_SIGSETJMP
+#define Sigjmp_buf sigjmp_buf
+#define Sigsetjmp(buf,save_mask) sigsetjmp((buf),(save_mask))
+#define Siglongjmp(buf,retval) siglongjmp((buf),(retval))
+#else
+#define Sigjmp_buf jmp_buf
+#define Sigsetjmp(buf,save_mask) setjmp((buf))
+#define Siglongjmp(buf,retval) longjmp((buf),(retval))
+#endif
 
 /* USE_STDIO_PTR:
  *	This symbol is defined if the _ptr and _cnt fields (or similar)
@@ -3110,37 +3128,756 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define FILE_bufsiz(fp)	$stdio_bufsiz
 #endif
 
-/* HAS_STRERROR:
- *	This symbol, if defined, indicates that the strerror routine is
- *	available to translate error numbers to strings. See the writeup
- *	of Strerror() in this file before you try to define your own.
+/* HAS_VPRINTF:
+ *	This symbol, if defined, indicates that the vprintf routine is available
+ *	to printf with a pointer to an argument list.  If unavailable, you
+ *	may need to write your own, probably in terms of _doprnt().
  */
-/* HAS_SYS_ERRLIST:
- *	This symbol, if defined, indicates that the sys_errlist array is
- *	available to translate error numbers to strings. The extern int
- *	sys_nerr gives the size of that table.
+/* USE_CHAR_VSPRINTF:
+ *	This symbol is defined if this system has vsprintf() returning type
+ *	(char*).  The trend seems to be to declare it as "int vsprintf()".  It
+ *	is up to the package author to declare vsprintf correctly based on the
+ *	symbol.
  */
-/* Strerror:
- *	This preprocessor symbol is defined as a macro if strerror() is
- *	not available to translate error numbers to strings but sys_errlist[]
- *	array is there.
+#$d_vprintf HAS_VPRINTF	/**/
+#$d_charvspr USE_CHAR_VSPRINTF 	/**/
+
+/* DOUBLESIZE:
+ *	This symbol contains the size of a double, so that the C preprocessor
+ *	can make decisions based on it.
  */
-#$d_strerror HAS_STRERROR		/**/
-#$d_syserrlst HAS_SYS_ERRLIST	/**/
-#define Strerror(e) $d_strerrm
+#define DOUBLESIZE $doublesize		/**/
 
-/* HAS_STRERROR_R:
- *	This symbol, if defined, indicates that the strerror_r routine
- *	is available to strerror re-entrantly.
+/* I_TIME:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <time.h>.
  */
-/* STRERROR_R_PROTO:
- *	This symbol encodes the prototype of strerror_r.
- *	It is zero if d_strerror_r is undef, and one of the
- *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
- *	is defined.
+/* I_SYS_TIME:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/time.h>.
  */
-#$d_strerror_r HAS_STRERROR_R	   /**/
-#define STRERROR_R_PROTO $strerror_r_proto	   /**/
+/* I_SYS_TIME_KERNEL:
+ *	This symbol, if defined, indicates to the C program that it should
+ *	include <sys/time.h> with KERNEL defined.
+ */
+/* HAS_TM_TM_ZONE:
+ *	This symbol, if defined, indicates to the C program that
+ *	the struct tm has a tm_zone field.
+ */
+/* HAS_TM_TM_GMTOFF:
+ *	This symbol, if defined, indicates to the C program that
+ *	the struct tm has a tm_gmtoff field.
+ */
+#$i_time I_TIME		/**/
+#$i_systime I_SYS_TIME		/**/
+#$i_systimek I_SYS_TIME_KERNEL		/**/
+#$d_tm_tm_zone HAS_TM_TM_ZONE		/**/
+#$d_tm_tm_gmtoff HAS_TM_TM_GMTOFF		/**/
+
+/* VAL_O_NONBLOCK:
+ *	This symbol is to be used during open() or fcntl(F_SETFL) to turn on
+ *	non-blocking I/O for the file descriptor. Note that there is no way
+ *	back, i.e. you cannot turn it blocking again this way. If you wish to
+ *	alternatively switch between blocking and non-blocking, use the
+ *	ioctl(FIOSNBIO) call instead, but that is not supported by all devices.
+ */
+/* VAL_EAGAIN:
+ *	This symbol holds the errno error code set by read() when no data was
+ *	present on the non-blocking file descriptor.
+ */
+/* RD_NODATA:
+ *	This symbol holds the return code from read() when no data is present
+ *	on the non-blocking file descriptor. Be careful! If EOF_NONBLOCK is
+ *	not defined, then you can't distinguish between no data and EOF by
+ *	issuing a read(). You'll have to find another way to tell for sure!
+ */
+/* EOF_NONBLOCK:
+ *	This symbol, if defined, indicates to the C program that a read() on
+ *	a non-blocking file descriptor will return 0 on EOF, and not the value
+ *	held in RD_NODATA (-1 usually, in that case!).
+ */
+#define VAL_O_NONBLOCK $o_nonblock
+#define VAL_EAGAIN $eagain
+#define RD_NODATA $rd_nodata
+#$d_eofnblk EOF_NONBLOCK
+
+/* PTRSIZE:
+ *	This symbol contains the size of a pointer, so that the C preprocessor
+ *	can make decisions based on it.  It will be sizeof(void *) if
+ *	the compiler supports (void *); otherwise it will be
+ *	sizeof(char *).
+ */
+#define PTRSIZE $ptrsize		/**/
+
+/* Drand01:
+ *	This macro is to be used to generate uniformly distributed
+ *	random numbers over the range [0., 1.[.  You may have to supply
+ *	an 'extern double drand48();' in your program since SunOS 4.1.3
+ *	doesn't provide you with anything relevant in its headers.
+ *	See HAS_DRAND48_PROTO.
+ */
+/* Rand_seed_t:
+ *	This symbol defines the type of the argument of the
+ *	random seed function.
+ */
+/* seedDrand01:
+ *	This symbol defines the macro to be used in seeding the
+ *	random number generator (see Drand01).
+ */
+/* RANDBITS:
+ *	This symbol indicates how many bits are produced by the
+ *	function used to generate normalized random numbers.
+ *	Values include 15, 16, 31, and 48.
+ */
+#define Drand01()		$drand01		/**/
+#define Rand_seed_t		$randseedtype		/**/
+#define seedDrand01(x)	$seedfunc((Rand_seed_t)x)	/**/
+#define RANDBITS		$randbits		/**/
+
+/* SSize_t:
+ *	This symbol holds the type used by functions that return
+ *	a count of bytes or an error condition.  It must be a signed type.
+ *	It is usually ssize_t, but may be long or int, etc.
+ *	It may be necessary to include <sys/types.h> or <unistd.h>
+ *	to get any typedef'ed information.
+ *	We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
+ */
+#define SSize_t $ssizetype	 /* signed count of bytes */
+
+/* EBCDIC:
+ *     This symbol, if defined, indicates that this system uses
+ *	EBCDIC encoding.
+ */
+#$ebcdic	EBCDIC 		/**/
+
+/* HAS_ATOLF:
+ *	This symbol, if defined, indicates that the atolf routine is
+ *	available to convert strings into long doubles.
+ */
+#$d_atolf HAS_ATOLF		/**/
+
+/* HAS_ATOLL:
+ *	This symbol, if defined, indicates that the atoll routine is
+ *	available to convert strings into long longs.
+ */
+#$d_atoll HAS_ATOLL		/**/
+
+/* HAS__FWALK:
+ *	This symbol, if defined, indicates that the _fwalk system call is
+ *	available to apply a function to all the file handles.
+ */
+#$d__fwalk HAS__FWALK		/**/
+
+/* HAS_AINTL:
+ *	This symbol, if defined, indicates that the aintl routine is
+ *	available.  If copysignl is also present we can emulate modfl.
+ */
+#$d_aintl HAS_AINTL		/**/
+
+/* HAS_BUILTIN_CHOOSE_EXPR:
+ *	Can we handle GCC builtin for compile-time ternary-like expressions
+ */
+/* HAS_BUILTIN_EXPECT:
+ *	Can we handle GCC builtin for telling that certain values are more
+ *	likely
+ */
+#$d_builtin_expect HAS_BUILTIN_EXPECT	/**/
+#$d_builtin_choose_expr HAS_BUILTIN_CHOOSE_EXPR	/**/
+
+/* HAS_C99_VARIADIC_MACROS:
+ *	If defined, the compiler supports C99 variadic macros.
+ */
+#$d_c99_variadic_macros	HAS_C99_VARIADIC_MACROS	/**/
+
+/* HAS_CLASS:
+ *	This symbol, if defined, indicates that the class routine is
+ *	available to classify doubles.  Available for example in AIX.
+ *	The returned values are defined in <float.h> and are:
+ *
+ *	FP_PLUS_NORM	Positive normalized, nonzero
+ *	FP_MINUS_NORM	Negative normalized, nonzero
+ *	FP_PLUS_DENORM	Positive denormalized, nonzero
+ *	FP_MINUS_DENORM	Negative denormalized, nonzero
+ *	FP_PLUS_ZERO	+0.0
+ *	FP_MINUS_ZERO	-0.0
+ *	FP_PLUS_INF	+INF
+ *	FP_MINUS_INF	-INF
+ *	FP_NANS		Signaling Not a Number (NaNS)
+ *	FP_NANQ		Quiet Not a Number (NaNQ)
+ */
+#$d_class HAS_CLASS		/**/
+
+/* HAS_CLEARENV:
+ *	This symbol, if defined, indicates that the clearenv () routine is
+ *	available for use.
+ */
+#$d_clearenv HAS_CLEARENV		/**/
+
+/* HAS_STRUCT_CMSGHDR:
+ *	This symbol, if defined, indicates that the struct cmsghdr
+ *	is supported.
+ */
+#$d_cmsghdr_s HAS_STRUCT_CMSGHDR	/**/
+
+/* HAS_COPYSIGNL:
+ *	This symbol, if defined, indicates that the copysignl routine is
+ *	available.  If aintl is also present we can emulate modfl.
+ */
+#$d_copysignl HAS_COPYSIGNL		/**/
+
+/* USE_CPLUSPLUS:
+ *	This symbol, if defined, indicates that a C++ compiler was
+ *	used to compiled Perl and will be used to compile extensions.
+ */
+#$d_cplusplus USE_CPLUSPLUS		/**/
+
+/* HAS_DBMINIT_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the dbminit() function.  Otherwise, it is up
+ *	to the program to supply one.  A good guess is
+ *		extern int dbminit(char *);
+ */
+#$d_dbminitproto	HAS_DBMINIT_PROTO	/**/
+
+/* HAS_DIR_DD_FD:
+ *	This symbol, if defined, indicates that the the DIR* dirstream
+ *	structure contains a member variable named dd_fd.
+ */
+#$d_dir_dd_fd HAS_DIR_DD_FD		/**/
+
+/* HAS_DIRFD:
+ *	This manifest constant lets the C program know that dirfd
+ *	is available.
+ */
+#$d_dirfd HAS_DIRFD		/**/
+
+/* DLSYM_NEEDS_UNDERSCORE:
+ *	This symbol, if defined, indicates that we need to prepend an
+ *	underscore to the symbol name before calling dlsym().  This only
+ *	makes sense if you *have* dlsym, which we will presume is the
+ *	case if you're using dl_dlopen.xs.
+ */
+#$d_dlsymun 	DLSYM_NEEDS_UNDERSCORE 	/**/
+
+/* HAS_FAST_STDIO:
+ *	This symbol, if defined, indicates that the "fast stdio"
+ *	is available to manipulate the stdio buffers directly.
+ */
+#$d_faststdio HAS_FAST_STDIO		/**/
+
+/* HAS_FCHDIR:
+ *	This symbol, if defined, indicates that the fchdir routine is
+ *	available to change directory using a file descriptor.
+ */
+#$d_fchdir HAS_FCHDIR		/**/
+
+/* FCNTL_CAN_LOCK:
+ *	This symbol, if defined, indicates that fcntl() can be used
+ *	for file locking.  Normally on Unix systems this is defined.
+ *	It may be undefined on VMS.
+ */
+#$d_fcntl_can_lock FCNTL_CAN_LOCK		/**/
+
+/* HAS_FINITE:
+ *	This symbol, if defined, indicates that the finite routine is
+ *	available to check whether a double is finite (non-infinity non-NaN).
+ */
+#$d_finite HAS_FINITE		/**/
+
+/* HAS_FINITEL:
+ *	This symbol, if defined, indicates that the finitel routine is
+ *	available to check whether a long double is finite
+ *	(non-infinity non-NaN).
+ */
+#$d_finitel HAS_FINITEL		/**/
+
+/* HAS_FLOCK_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the flock() function.  Otherwise, it is up
+ *	to the program to supply one.  A good guess is
+ *		extern int flock(int, int);
+ */
+#$d_flockproto	HAS_FLOCK_PROTO	/**/
+
+/* HAS_FP_CLASS:
+ *	This symbol, if defined, indicates that the fp_class routine is
+ *	available to classify doubles.  Available for example in Digital UNIX.
+ *	The returned values are defined in <math.h> and are:
+ *
+ *	FP_SNAN           Signaling NaN (Not-a-Number)
+ *	FP_QNAN           Quiet NaN (Not-a-Number)
+ *	FP_POS_INF        +infinity
+ *	FP_NEG_INF        -infinity
+ *	FP_POS_NORM       Positive normalized
+ *	FP_NEG_NORM       Negative normalized
+ *	FP_POS_DENORM     Positive denormalized
+ *	FP_NEG_DENORM     Negative denormalized
+ *	FP_POS_ZERO       +0.0 (positive zero)
+ *	FP_NEG_ZERO       -0.0 (negative zero)
+ */
+#$d_fp_class HAS_FP_CLASS		/**/
+
+/* HAS_FPCLASS:
+ *	This symbol, if defined, indicates that the fpclass routine is
+ *	available to classify doubles.  Available for example in Solaris/SVR4.
+ *	The returned values are defined in <ieeefp.h> and are:
+ *
+ *	FP_SNAN		signaling NaN
+ *	FP_QNAN		quiet NaN
+ *	FP_NINF		negative infinity
+ *	FP_PINF		positive infinity
+ *	FP_NDENORM	negative denormalized non-zero
+ *	FP_PDENORM	positive denormalized non-zero
+ *	FP_NZERO	negative zero
+ *	FP_PZERO	positive zero
+ *	FP_NNORM	negative normalized non-zero
+ *	FP_PNORM	positive normalized non-zero
+ */
+#$d_fpclass HAS_FPCLASS		/**/
+
+/* HAS_FPCLASSIFY:
+ *	This symbol, if defined, indicates that the fpclassify routine is
+ *	available to classify doubles.  Available for example in HP-UX.
+ *	The returned values are defined in <math.h> and are
+ *
+ *           FP_NORMAL     Normalized
+ *           FP_ZERO       Zero
+ *           FP_INFINITE   Infinity
+ *           FP_SUBNORMAL  Denormalized
+ *           FP_NAN        NaN
+ *
+ */
+#$d_fpclassify HAS_FPCLASSIFY		/**/
+
+/* HAS_FPCLASSL:
+ *	This symbol, if defined, indicates that the fpclassl routine is
+ *	available to classify long doubles.  Available for example in IRIX.
+ *	The returned values are defined in <ieeefp.h> and are:
+ *
+ *	FP_SNAN		signaling NaN
+ *	FP_QNAN		quiet NaN
+ *	FP_NINF		negative infinity
+ *	FP_PINF		positive infinity
+ *	FP_NDENORM	negative denormalized non-zero
+ *	FP_PDENORM	positive denormalized non-zero
+ *	FP_NZERO	negative zero
+ *	FP_PZERO	positive zero
+ *	FP_NNORM	negative normalized non-zero
+ *	FP_PNORM	positive normalized non-zero
+ */
+#$d_fpclassl HAS_FPCLASSL		/**/
+
+/* HAS_FPOS64_T:
+ *	This symbol will be defined if the C compiler supports fpos64_t.
+ */
+#$d_fpos64_t	HAS_FPOS64_T    	/**/
+
+/* HAS_FREXPL:
+ *	This symbol, if defined, indicates that the frexpl routine is
+ *	available to break a long double floating-point number into
+ *	a normalized fraction and an integral power of 2.
+ */
+#$d_frexpl HAS_FREXPL		/**/
+
+/* HAS_STRUCT_FS_DATA:
+ *	This symbol, if defined, indicates that the struct fs_data
+ *	to do statfs() is supported.
+ */
+#$d_fs_data_s HAS_STRUCT_FS_DATA	/**/
+
+/* HAS_FSEEKO:
+ *	This symbol, if defined, indicates that the fseeko routine is
+ *	available to fseek beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_fseeko HAS_FSEEKO		/**/
+
+/* HAS_FSTATFS:
+ *	This symbol, if defined, indicates that the fstatfs routine is
+ *	available to stat filesystems by file descriptors.
+ */
+#$d_fstatfs HAS_FSTATFS		/**/
+
+/* HAS_FSYNC:
+ *	This symbol, if defined, indicates that the fsync routine is
+ *	available to write a file's modified data and attributes to
+ *	permanent storage.
+ */
+#$d_fsync HAS_FSYNC		/**/
+
+/* HAS_FTELLO:
+ *	This symbol, if defined, indicates that the ftello routine is
+ *	available to ftell beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_ftello HAS_FTELLO		/**/
+
+/* HAS_FUTIMES:
+ *	This symbol, if defined, indicates that the futimes routine is
+ *	available to change file descriptor time stamps with struct timevals.
+ */
+#$d_futimes HAS_FUTIMES		/**/
+
+/* HAS_GETCWD:
+ *	This symbol, if defined, indicates that the getcwd routine is
+ *	available to get the current working directory.
+ */
+#$d_getcwd HAS_GETCWD		/**/
+
+/* HAS_GETESPWNAM:
+ *	This symbol, if defined, indicates that the getespwnam system call is
+ *	available to retrieve enchanced (shadow) password entries by name.
+ */
+#$d_getespwnam HAS_GETESPWNAM		/**/
+
+/* HAS_GETFSSTAT:
+ *	This symbol, if defined, indicates that the getfsstat routine is
+ *	available to stat filesystems in bulk.
+ */
+#$d_getfsstat HAS_GETFSSTAT		/**/
+
+/* HAS_GETITIMER:
+ *	This symbol, if defined, indicates that the getitimer routine is
+ *	available to return interval timers.
+ */
+#$d_getitimer HAS_GETITIMER		/**/
+
+/* HAS_GETMNT:
+ *	This symbol, if defined, indicates that the getmnt routine is
+ *	available to get filesystem mount info by filename.
+ */
+#$d_getmnt HAS_GETMNT		/**/
+
+/* HAS_GETMNTENT:
+ *	This symbol, if defined, indicates that the getmntent routine is
+ *	available to iterate through mounted file systems to get their info.
+ */
+#$d_getmntent HAS_GETMNTENT		/**/
+
+/* HAS_GETPRPWNAM:
+ *	This symbol, if defined, indicates that the getprpwnam system call is
+ *	available to retrieve protected (shadow) password entries by name.
+ */
+#$d_getprpwnam HAS_GETPRPWNAM		/**/
+
+/* HAS_GETSPNAM:
+ *	This symbol, if defined, indicates that the getspnam system call is
+ *	available to retrieve SysV shadow password entries by name.
+ */
+#$d_getspnam HAS_GETSPNAM		/**/
+
+/* HAS_HASMNTOPT:
+ *	This symbol, if defined, indicates that the hasmntopt routine is
+ *	available to query the mount options of file systems.
+ */
+#$d_hasmntopt HAS_HASMNTOPT		/**/
+
+/* HAS_ILOGBL:
+ *	This symbol, if defined, indicates that the ilogbl routine is
+ *	available.  If scalbnl is also present we can emulate frexpl.
+ */
+#$d_ilogbl HAS_ILOGBL		/**/
+
+/* HAS_INT64_T:
+ *     This symbol will defined if the C compiler supports int64_t.
+ *     Usually the <inttypes.h> needs to be included, but sometimes
+ *	<sys/types.h> is enough.
+ */
+#$d_int64_t     HAS_INT64_T               /**/
+
+/* HAS_ISFINITE:
+ *	This symbol, if defined, indicates that the isfinite routine is
+ *	available to check whether a double is finite (non-infinity non-NaN).
+ */
+#$d_isfinite HAS_ISFINITE		/**/
+
+/* HAS_ISINF:
+ *	This symbol, if defined, indicates that the isinf routine is
+ *	available to check whether a double is an infinity.
+ */
+#$d_isinf HAS_ISINF		/**/
+
+/* HAS_ISNAN:
+ *	This symbol, if defined, indicates that the isnan routine is
+ *	available to check whether a double is a NaN.
+ */
+#$d_isnan HAS_ISNAN		/**/
+
+/* HAS_ISNANL:
+ *	This symbol, if defined, indicates that the isnanl routine is
+ *	available to check whether a long double is a NaN.
+ */
+#$d_isnanl HAS_ISNANL		/**/
+
+/* HAS_LDBL_DIG:
+ *	This symbol, if defined, indicates that this system's <float.h>
+ *	or <limits.h> defines the symbol LDBL_DIG, which is the number
+ *	of significant digits in a long double precision number. Unlike
+ *	for DBL_DIG, there's no good guess for LDBL_DIG if it is undefined.
+ */
+#$d_ldbl_dig HAS_LDBL_DIG 	/* */
+
+/* LIBM_LIB_VERSION:
+ *	This symbol, if defined, indicates that libm exports _LIB_VERSION
+ *	and that math.h defines the enum to manipulate it.
+ */
+#$d_libm_lib_version LIBM_LIB_VERSION		/**/
+
+/* HAS_MADVISE:
+ *	This symbol, if defined, indicates that the madvise system call is
+ *	available to map a file into memory.
+ */
+#$d_madvise HAS_MADVISE		/**/
+
+/* HAS_MALLOC_SIZE:
+ *	This symbol, if defined, indicates that the malloc_size
+ *	routine is available for use.
+ */
+#$d_malloc_size HAS_MALLOC_SIZE		/**/
+
+/* HAS_MALLOC_GOOD_SIZE:
+ *	This symbol, if defined, indicates that the malloc_good_size
+ *	routine is available for use.
+ */
+#$d_malloc_good_size HAS_MALLOC_GOOD_SIZE	/**/
+
+/* HAS_MKDTEMP:
+ *	This symbol, if defined, indicates that the mkdtemp routine is
+ *	available to exclusively create a uniquely named temporary directory.
+ */
+#$d_mkdtemp HAS_MKDTEMP		/**/
+
+/* HAS_MKSTEMPS:
+ *	This symbol, if defined, indicates that the mkstemps routine is
+ *	available to excluslvely create and open a uniquely named
+ *	(with a suffix) temporary file.
+ */
+#$d_mkstemps HAS_MKSTEMPS		/**/
+
+/* HAS_MODFL:
+ *	This symbol, if defined, indicates that the modfl routine is
+ *	available to split a long double x into a fractional part f and
+ *	an integer part i such that |f| < 1.0 and (f + i) = x.
+ */
+/* HAS_MODFL_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the modfl() function.  Otherwise, it is up
+ *	to the program to supply one.
+ */
+/* HAS_MODFL_POW32_BUG:
+ *	This symbol, if defined, indicates that the modfl routine is
+ *	broken for long doubles >= pow(2, 32).
+ *	For example from 4294967303.150000 one would get 4294967302.000000
+ *	and 1.150000.  The bug has been seen in certain versions of glibc,
+ *	release 2.2.2 is known to be okay.
+ */
+#$d_modfl HAS_MODFL		/**/
+#$d_modflproto HAS_MODFL_PROTO		/**/
+#$d_modfl_pow32_bug HAS_MODFL_POW32_BUG		/**/
+
+/* HAS_MPROTECT:
+ *	This symbol, if defined, indicates that the mprotect system call is
+ *	available to modify the access protection of a memory mapped file.
+ */
+#$d_mprotect HAS_MPROTECT		/**/
+
+/* HAS_STRUCT_MSGHDR:
+ *	This symbol, if defined, indicates that the struct msghdr
+ *	is supported.
+ */
+#$d_msghdr_s HAS_STRUCT_MSGHDR	/**/
+
+/* HAS_NL_LANGINFO:
+ *	This symbol, if defined, indicates that the nl_langinfo routine is
+ *	available to return local data.  You will also need <langinfo.h>
+ *	and therefore I_LANGINFO.
+ */
+#$d_nl_langinfo HAS_NL_LANGINFO		/**/
+
+/* HAS_OFF64_T:
+ *	This symbol will be defined if the C compiler supports off64_t.
+ */
+#$d_off64_t	HAS_OFF64_T    		/**/
+
+/* HAS_PROCSELFEXE:
+ *	This symbol is defined if PROCSELFEXE_PATH is a symlink
+ *	to the absolute pathname of the executing program.
+ */
+/* PROCSELFEXE_PATH:
+ *	If HAS_PROCSELFEXE is defined this symbol is the filename
+ *	of the symbolic link pointing to the absolute pathname of
+ *	the executing program.
+ */
+#$d_procselfexe HAS_PROCSELFEXE	/**/
+#if defined(HAS_PROCSELFEXE) && !defined(PROCSELFEXE_PATH)
+#define PROCSELFEXE_PATH	$procselfexe	/**/
+#endif
+
+/* HAS_PTHREAD_ATTR_SETSCOPE:
+ *	This symbol, if defined, indicates that the pthread_attr_setscope
+ *	system call is available to set the contention scope attribute of
+ *	a thread attribute object.
+ */
+#$d_pthread_attr_setscope HAS_PTHREAD_ATTR_SETSCOPE		/**/
+
+/* HAS_READV:
+ *	This symbol, if defined, indicates that the readv routine is
+ *	available to do gather reads.  You will also need <sys/uio.h>
+ *	and there I_SYSUIO.
+ */
+#$d_readv HAS_READV		/**/
+
+/* HAS_RECVMSG:
+ *	This symbol, if defined, indicates that the recvmsg routine is
+ *	available to send structured socket messages.
+ */
+#$d_recvmsg HAS_RECVMSG		/**/
+
+/* HAS_SBRK_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the sbrk() function.  Otherwise, it is up
+ *	to the program to supply one.  Good guesses are
+ *		extern void* sbrk(int);
+ *		extern void* sbrk(size_t);
+ */
+#$d_sbrkproto	HAS_SBRK_PROTO	/**/
+
+/* HAS_SCALBNL:
+ *	This symbol, if defined, indicates that the scalbnl routine is
+ *	available.  If ilogbl is also present we can emulate frexpl.
+ */
+#$d_scalbnl HAS_SCALBNL		/**/
+
+/* HAS_SENDMSG:
+ *	This symbol, if defined, indicates that the sendmsg routine is
+ *	available to send structured socket messages.
+ */
+#$d_sendmsg HAS_SENDMSG		/**/
+
+/* HAS_SETITIMER:
+ *	This symbol, if defined, indicates that the setitimer routine is
+ *	available to set interval timers.
+ */
+#$d_setitimer HAS_SETITIMER		/**/
+
+/* HAS_SETPROCTITLE:
+ *	This symbol, if defined, indicates that the setproctitle routine is
+ *	available to set process title.
+ */
+#$d_setproctitle HAS_SETPROCTITLE		/**/
+
+/* USE_SFIO:
+ *	This symbol, if defined, indicates that sfio should
+ *	be used.
+ */
+#$d_sfio	USE_SFIO		/**/
+
+/* HAS_SIGNBIT:
+ *	This symbol, if defined, indicates that the signbit routine is
+ *	available to check if the given number has the sign bit set.
+ *	This should include correct testing of -0.0.  This will only be set
+ *	if the signbit() routine is safe to use with the NV type used internally
+ *	in perl.  Users should call Perl_signbit(), which will be #defined to
+ *	the system's signbit() function or macro if this symbol is defined.
+ */
+#$d_signbit HAS_SIGNBIT		/**/
+
+/* HAS_SIGPROCMASK:
+ *	This symbol, if defined, indicates that the sigprocmask
+ *	system call is available to examine or change the signal mask
+ *	of the calling process.
+ */
+#$d_sigprocmask HAS_SIGPROCMASK		/**/
+
+/* USE_SITECUSTOMIZE:
+ *	This symbol, if defined, indicates that sitecustomize should
+ *	be used.
+ */
+#ifndef USE_SITECUSTOMIZE
+#$usesitecustomize	USE_SITECUSTOMIZE		/**/
+#endif
+
+/* HAS_SNPRINTF:
+ *	This symbol, if defined, indicates that the snprintf () library
+ *	function is available for use.
+ */
+/* HAS_VSNPRINTF:
+ *	This symbol, if defined, indicates that the vsnprintf () library
+ *	function is available for use.
+ */
+#$d_snprintf HAS_SNPRINTF	/**/
+#$d_vsnprintf HAS_VSNPRINTF	/**/
+
+/* HAS_SOCKATMARK:
+ *	This symbol, if defined, indicates that the sockatmark routine is
+ *	available to test whether a socket is at the out-of-band mark.
+ */
+#$d_sockatmark HAS_SOCKATMARK		/**/
+
+/* HAS_SOCKATMARK_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the sockatmark() function.  Otherwise, it is up
+ *	to the program to supply one.  A good guess is
+ *		extern int sockatmark(int);
+ */
+#$d_sockatmarkproto	HAS_SOCKATMARK_PROTO	/**/
+
+/* HAS_SOCKS5_INIT:
+ *	This symbol, if defined, indicates that the socks5_init routine is
+ *	available to initialize SOCKS 5.
+ */
+#$d_socks5_init HAS_SOCKS5_INIT		/**/
+
+/* SPRINTF_RETURNS_STRLEN:
+ *	This variable defines whether sprintf returns the length of the string
+ *	(as per the ANSI spec). Some C libraries retain compatibility with
+ *	pre-ANSI C and return a pointer to the passed in buffer; for these
+ *	this variable will be undef.
+ */
+#$d_sprintf_returns_strlen SPRINTF_RETURNS_STRLEN	/**/
+
+/* HAS_SQRTL:
+ *	This symbol, if defined, indicates that the sqrtl routine is
+ *	available to do long double square roots.
+ */
+#$d_sqrtl HAS_SQRTL		/**/
+
+/* HAS_SETRESGID_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the setresgid() function.  Otherwise, it is up
+ *	to the program to supply one.  Good guesses are
+ *		extern int setresgid(uid_t ruid, uid_t euid, uid_t suid);
+ */
+#$d_sresgproto	HAS_SETRESGID_PROTO	/**/
+
+/* HAS_SETRESUID_PROTO:
+ *	This symbol, if defined, indicates that the system provides
+ *	a prototype for the setresuid() function.  Otherwise, it is up
+ *	to the program to supply one.  Good guesses are
+ *		extern int setresuid(uid_t ruid, uid_t euid, uid_t suid);
+ */
+#$d_sresuproto	HAS_SETRESUID_PROTO	/**/
+
+/* HAS_STRUCT_STATFS_F_FLAGS:
+ *	This symbol, if defined, indicates that the struct statfs
+ *	does have the f_flags member containing the mount flags of
+ *	the filesystem containing the file.
+ *	This kind of struct statfs is coming from <sys/mount.h> (BSD 4.3),
+ *	not from <sys/statfs.h> (SYSV).  Older BSDs (like Ultrix) do not
+ *	have statfs() and struct statfs, they have ustat() and getmnt()
+ *	with struct ustat and struct fs_data.
+ */
+#$d_statfs_f_flags HAS_STRUCT_STATFS_F_FLAGS		/**/
+
+/* HAS_STRUCT_STATFS:
+ *	This symbol, if defined, indicates that the struct statfs
+ *	to do statfs() is supported.
+ */
+#$d_statfs_s HAS_STRUCT_STATFS	/**/
+
+/* HAS_FSTATVFS:
+ *	This symbol, if defined, indicates that the fstatvfs routine is
+ *	available to stat filesystems by file descriptors.
+ */
+#$d_fstatvfs HAS_FSTATVFS		/**/
 
 /* HAS_STRFTIME:
  *	This symbol, if defined, indicates that the strftime routine is
@@ -3178,12 +3915,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_strtoq HAS_STRTOQ		/**/
 
-/* HAS_STRTOUL:
- *	This symbol, if defined, indicates that the strtoul routine is
- *	available to provide conversion of strings to unsigned long.
- */
-#$d_strtoul HAS_STRTOUL	/**/
-
 /* HAS_STRTOULL:
  *	This symbol, if defined, indicates that the strtoull routine is
  *	available to convert strings to unsigned long longs.
@@ -3213,50 +3944,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_telldirproto	HAS_TELLDIR_PROTO	/**/
 
-/* HAS_TIME:
- *	This symbol, if defined, indicates that the time() routine exists.
- */
-/* Time_t:
- *	This symbol holds the type returned by time(). It can be long,
- *	or time_t on BSD sites (in which case <sys/types.h> should be
- *	included).
- */
-#$d_time HAS_TIME		/**/
-#define Time_t $timetype		/* Time type */
-
-/* HAS_TIMES:
- *	This symbol, if defined, indicates that the times() routine exists.
- *	Note that this became obsolete on some systems (SUNOS), which now
- * use getrusage(). It may be necessary to include <sys/times.h>.
- */
-#$d_times HAS_TIMES		/**/
-
-/* HAS_TMPNAM_R:
- *	This symbol, if defined, indicates that the tmpnam_r routine
- *	is available to tmpnam re-entrantly.
- */
-/* TMPNAM_R_PROTO:
- *	This symbol encodes the prototype of tmpnam_r.
- *	It is zero if d_tmpnam_r is undef, and one of the
- *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
- *	is defined.
- */
-#$d_tmpnam_r HAS_TMPNAM_R	   /**/
-#define TMPNAM_R_PROTO $tmpnam_r_proto	   /**/
-
-/* HAS_TTYNAME_R:
- *	This symbol, if defined, indicates that the ttyname_r routine
- *	is available to ttyname re-entrantly.
- */
-/* TTYNAME_R_PROTO:
- *	This symbol encodes the prototype of ttyname_r.
- *	It is zero if d_ttyname_r is undef, and one of the
- *	REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
- *	is defined.
- */
-#$d_ttyname_r HAS_TTYNAME_R	   /**/
-#define TTYNAME_R_PROTO $ttyname_r_proto	   /**/
-
 /* U32_ALIGNMENT_REQUIRED:
  *	This symbol, if defined, indicates that you must access
  *	character data through U32-aligned pointers.
@@ -3271,28 +3958,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_ualarm HAS_UALARM		/**/
 
-/* HAS_UNION_SEMUN:
- *	This symbol, if defined, indicates that the union semun is
- *	defined by including <sys/sem.h>.  If not, the user code
- *	probably needs to define it as:
- *	union semun {
- *	    int val;
- *	    struct semid_ds *buf;
- *	    unsigned short *array;
- *	}
- */
-/* USE_SEMCTL_SEMUN:
- *	This symbol, if defined, indicates that union semun is
- *	used for semctl IPC_STAT.
- */
-/* USE_SEMCTL_SEMID_DS:
- *	This symbol, if defined, indicates that struct semid_ds * is
- *	used for semctl IPC_STAT.
- */
-#$d_union_semun HAS_UNION_SEMUN	/**/
-#$d_semctl_semun USE_SEMCTL_SEMUN	/**/
-#$d_semctl_semid_ds USE_SEMCTL_SEMID_DS	/**/
-
 /* HAS_UNORDERED:
  *	This symbol, if defined, indicates that the unordered routine is
  *	available to check whether two doubles are unordered
@@ -3320,39 +3985,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$d_ustat HAS_USTAT		/**/
 
-/* HAS_VFORK:
- *	This symbol, if defined, indicates that vfork() exists.
- */
-#$d_vfork HAS_VFORK	/**/
-
-/* HAS_PSEUDOFORK:
- *	This symbol, if defined, indicates that an emulation of the
- *	fork routine is available.
- */
-#$d_pseudofork HAS_PSEUDOFORK	/**/
-
-/* Signal_t:
- *	This symbol's value is either "void" or "int", corresponding to the
- *	appropriate return type of a signal handler.  Thus, you can declare
- *	a signal handler using "Signal_t (*handler)()", and define the
- *	handler using "Signal_t handler(sig)".
- */
-#define Signal_t $signal_t	/* Signal handler's return type */
-
-/* HAS_VPRINTF:
- *	This symbol, if defined, indicates that the vprintf routine is available
- *	to printf with a pointer to an argument list.  If unavailable, you
- *	may need to write your own, probably in terms of _doprnt().
- */
-/* USE_CHAR_VSPRINTF:
- *	This symbol is defined if this system has vsprintf() returning type
- *	(char*).  The trend seems to be to declare it as "int vsprintf()".  It
- *	is up to the package author to declare vsprintf correctly based on the
- *	symbol.
- */
-#$d_vprintf HAS_VPRINTF	/**/
-#$d_charvspr USE_CHAR_VSPRINTF 	/**/
-
 /* HAS_WRITEV:
  *	This symbol, if defined, indicates that the writev routine is
  *	available to do scatter writes.
@@ -3365,18 +3997,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$usedl USE_DYNAMIC_LOADING		/**/
 
-/* DOUBLESIZE:
- *	This symbol contains the size of a double, so that the C preprocessor
- *	can make decisions based on it.
- */
-#define DOUBLESIZE $doublesize		/**/
-
-/* EBCDIC:
- *     This symbol, if defined, indicates that this system uses
- *	EBCDIC encoding.
- */
-#$ebcdic	EBCDIC 		/**/
-
 /* FFLUSH_NULL:
  *	This symbol, if defined, tells that fflush(NULL) does flush
  *	all pending stdio output.
@@ -3391,51 +4011,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$fflushNULL	FFLUSH_NULL 		/**/
 #$fflushall	FFLUSH_ALL 		/**/
 
-/* Fpos_t:
- *	This symbol holds the type used to declare file positions in libc.
- *	It can be fpos_t, long, uint, etc... It may be necessary to include
- *	<sys/types.h> to get any typedef'ed information.
- */
-#define Fpos_t $fpostype		/* File position type */
-
-/* Gid_t_f:
- *	This symbol defines the format string used for printing a Gid_t.
- */
-#define	Gid_t_f		$gidformat		/**/
-
-/* Gid_t_sign:
- *	This symbol holds the signedess of a Gid_t.
- *	1 for unsigned, -1 for signed.
- */
-#define Gid_t_sign	$gidsign		/* GID sign */
-
-/* Gid_t_size:
- *	This symbol holds the size of a Gid_t in bytes.
- */
-#define Gid_t_size $gidsize		/* GID size */
-
-/* Gid_t:
- *	This symbol holds the return type of getgid() and the type of
- *	argument to setrgid() and related functions.  Typically,
- *	it is the type of group ids in the kernel. It can be int, ushort,
- *	gid_t, etc... It may be necessary to include <sys/types.h> to get
- *	any typedef'ed information.
- */
-#define Gid_t $gidtype		/* Type for getgid(), etc... */
-
-/* Groups_t:
- *	This symbol holds the type used for the second argument to
- *	getgroups() and setgroups().  Usually, this is the same as
- *	gidtype (gid_t) , but sometimes it isn't.
- *	It can be int, ushort, gid_t, etc... 
- *	It may be necessary to include <sys/types.h> to get any 
- *	typedef'ed information.  This is only required if you have
- *	getgroups() or setgroups()..
- */
-#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
-#define Groups_t $groupstype	/* Type for 2nd arg to [sg]etgroups() */
-#endif
-
 /* I_CRYPT:
  *	This symbol, if defined, indicates that <crypt.h> exists and
  *	should be included.
@@ -3484,17 +4059,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_fp_class	I_FP_CLASS		/**/
 
-/* I_GRP:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <grp.h>.
- */
-/* GRPASSWD:
- *	This symbol, if defined, indicates to the C program that struct group
- *	in <grp.h> contains gr_passwd.
- */
-#$i_grp I_GRP		/**/
-#$d_grpasswd GRPASSWD	/**/
-
 /* I_IEEEFP:
  *	This symbol, if defined, indicates that <ieeefp.h> exists and
  *	should be included.
@@ -3519,30 +4083,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_libutil	I_LIBUTIL		/**/
 
-/* I_MACH_CTHREADS:
- *     This symbol, if defined, indicates to the C program that it should
- *     include <mach/cthreads.h>.
- */
-#$i_machcthr   I_MACH_CTHREADS	/**/
-
 /* I_MNTENT:
  *	This symbol, if defined, indicates that <mntent.h> exists and
  *	should be included.
  */
 #$i_mntent	I_MNTENT		/**/
 
-/* I_NDBM:
- *	This symbol, if defined, indicates that <ndbm.h> exists and should
- *	be included.
- */
-#$i_ndbm I_NDBM	/**/
-
-/* I_NETDB:
- *	This symbol, if defined, indicates that <netdb.h> exists and
- *	should be included.
- */
-#$i_netdb I_NETDB		/**/
-
 /* I_NETINET_TCP:
  *     This symbol, if defined, indicates to the C program that it should
  *     include <netinet/tcp.h>.
@@ -3561,58 +4107,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_prot	I_PROT		/**/
 
-/* I_PTHREAD:
- *     This symbol, if defined, indicates to the C program that it should
- *     include <pthread.h>.
- */
-#$i_pthread   I_PTHREAD	/**/
-
-/* I_PWD:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <pwd.h>.
- */
-/* PWQUOTA:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_quota.
- */
-/* PWAGE:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_age.
- */
-/* PWCHANGE:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_change.
- */
-/* PWCLASS:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_class.
- */
-/* PWEXPIRE:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_expire.
- */
-/* PWCOMMENT:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_comment.
- */
-/* PWGECOS:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_gecos.
- */
-/* PWPASSWD:
- *	This symbol, if defined, indicates to the C program that struct passwd
- *	contains pw_passwd.
- */
-#$i_pwd I_PWD		/**/
-#$d_pwquota PWQUOTA	/**/
-#$d_pwage PWAGE	/**/
-#$d_pwchange PWCHANGE	/**/
-#$d_pwclass PWCLASS	/**/
-#$d_pwexpire PWEXPIRE	/**/
-#$d_pwcomment PWCOMMENT	/**/
-#$d_pwgecos PWGECOS	/**/
-#$d_pwpasswd PWPASSWD	/**/
-
 /* I_SHADOW:
  *	This symbol, if defined, indicates that <shadow.h> exists and
  *	should be included.
@@ -3660,12 +4154,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_sysstatvfs	I_SYS_STATVFS		/**/
 
-/* I_SYSUIO:
- *	This symbol, if defined, indicates that <sys/uio.h> exists and
- *	should be included.
- */
-#$i_sysuio	I_SYSUIO		/**/
-
 /* I_SYSUTSNAME:
  *	This symbol, if defined, indicates that <sys/utsname.h> exists and
  *	should be included.
@@ -3678,64 +4166,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_sysvfs	I_SYS_VFS		/**/
 
-/* I_TIME:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <time.h>.
- */
-/* I_SYS_TIME:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <sys/time.h>.
- */
-/* I_SYS_TIME_KERNEL:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <sys/time.h> with KERNEL defined.
- */
-/* HAS_TM_TM_ZONE:
- *	This symbol, if defined, indicates to the C program that
- *	the struct tm has a tm_zone field.
- */
-/* HAS_TM_TM_GMTOFF:
- *	This symbol, if defined, indicates to the C program that
- *	the struct tm has a tm_gmtoff field.
- */
-#$i_time I_TIME		/**/
-#$i_systime I_SYS_TIME		/**/
-#$i_systimek I_SYS_TIME_KERNEL		/**/
-#$d_tm_tm_zone HAS_TM_TM_ZONE		/**/
-#$d_tm_tm_gmtoff HAS_TM_TM_GMTOFF		/**/
-
 /* I_USTAT:
  *	This symbol, if defined, indicates that <ustat.h> exists and
  *	should be included.
  */
 #$i_ustat	I_USTAT		/**/
 
-/* I_STDARG:
- *	This symbol, if defined, indicates that <stdarg.h> exists and should
- *	be included.
- */
-/* I_VARARGS:
- *	This symbol, if defined, indicates to the C program that it should
- *	include <varargs.h>.
- */
-#$i_stdarg I_STDARG		/**/
-#$i_varargs I_VARARGS	/**/
-
-/* PERL_INC_VERSION_LIST:
- *	This variable specifies the list of subdirectories in over
- *	which perl.c:incpush() and lib/lib.pm will automatically
- *	search when adding directories to @INC, in a format suitable
- *	for a C initialization string.  See the inc_version_list entry
- *	in Porting/Glossary for more details.
- */
-#$d_inc_version_list PERL_INC_VERSION_LIST $inc_version_list_init		/**/
-
-/* INSTALL_USR_BIN_PERL:
- *	This symbol, if defined, indicates that Perl is to be installed
- * 	also as /usr/bin/perl.
- */
-#$installusrbinperl INSTALL_USR_BIN_PERL	/**/
-
 /* PERL_PRIfldbl:
  *	This symbol, if defined, contains the string used by stdio to
  *	format long doubles (format 'f') for output.
@@ -3757,82 +4193,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_PRIeldbl PERL_PRIeldbl	$sPRIeldbl	/**/
 #$d_SCNfldbl PERL_SCNfldbl	$sSCNfldbl	/**/
 
-/* Off_t:
- *	This symbol holds the type used to declare offsets in the kernel.
- *	It can be int, long, off_t, etc... It may be necessary to include
- *	<sys/types.h> to get any typedef'ed information.
- */
-/* LSEEKSIZE:
- *	This symbol holds the number of bytes used by the Off_t.
- */
-/* Off_t_size:
- *	This symbol holds the number of bytes used by the Off_t.
- */
-#define Off_t $lseektype		/* <offset> type */
-#define LSEEKSIZE $lseeksize		/* <offset> size */
-#define Off_t_size $lseeksize	/* <offset> size */
-
 /* PERL_MAD:
  *	This symbol, if defined, indicates that the Misc Attribution
  *	Declaration code should be conditionally compiled.
  */
 #$mad	PERL_MAD		/**/
 
-/* Free_t:
- *	This variable contains the return type of free().  It is usually
- * void, but occasionally int.
- */
-/* Malloc_t:
- *	This symbol is the type of pointer returned by malloc and realloc.
- */
-#define Malloc_t $malloctype			/**/
-#define Free_t $freetype			/**/
-
-/* PERL_MALLOC_WRAP:
- *	This symbol, if defined, indicates that we'd like malloc wrap checks.
- */
-#$usemallocwrap PERL_MALLOC_WRAP		/**/
-
-/* MYMALLOC:
- *	This symbol, if defined, indicates that we're using our own malloc.
- */
-#$d_mymalloc MYMALLOC			/**/
-
-/* Mode_t:
- *	This symbol holds the type used to declare file modes 
- *	for systems calls.  It is usually mode_t, but may be
- *	int or unsigned short.  It may be necessary to include <sys/types.h>
- *	to get any typedef'ed information.
- */
-#define Mode_t $modetype	 /* file mode parameter for system calls */
-
-/* VAL_O_NONBLOCK:
- *	This symbol is to be used during open() or fcntl(F_SETFL) to turn on
- *	non-blocking I/O for the file descriptor. Note that there is no way
- *	back, i.e. you cannot turn it blocking again this way. If you wish to
- *	alternatively switch between blocking and non-blocking, use the
- *	ioctl(FIOSNBIO) call instead, but that is not supported by all devices.
- */
-/* VAL_EAGAIN:
- *	This symbol holds the errno error code set by read() when no data was
- *	present on the non-blocking file descriptor.
- */
-/* RD_NODATA:
- *	This symbol holds the return code from read() when no data is present
- *	on the non-blocking file descriptor. Be careful! If EOF_NONBLOCK is
- *	not defined, then you can't distinguish between no data and EOF by
- *	issuing a read(). You'll have to find another way to tell for sure!
- */
-/* EOF_NONBLOCK:
- *	This symbol, if defined, indicates to the C program that a read() on
- *	a non-blocking file descriptor will return 0 on EOF, and not the value
- *	held in RD_NODATA (-1 usually, in that case!).
- */
-#define VAL_O_NONBLOCK $o_nonblock
-#define VAL_EAGAIN $eagain
-#define RD_NODATA $rd_nodata
-#$d_eofnblk EOF_NONBLOCK
-
 /* NEED_VA_COPY:
  *	This symbol, if defined, indicates that the system stores
  *	the variable argument list datatype, va_list, in a format
@@ -3844,53 +4210,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$need_va_copy	NEED_VA_COPY		/**/
 
-/* Netdb_host_t:
- *	This symbol holds the type used for the 1st argument
- *	to gethostbyaddr().
- */
-/* Netdb_hlen_t:
- *	This symbol holds the type used for the 2nd argument
- *	to gethostbyaddr().
- */
-/* Netdb_name_t:
- *	This symbol holds the type used for the argument to
- *	gethostbyname().
- */
-/* Netdb_net_t:
- *	This symbol holds the type used for the 1st argument to
- *	getnetbyaddr().
- */
-#define Netdb_host_t		$netdb_host_type /**/
-#define Netdb_hlen_t		$netdb_hlen_type /**/
-#define Netdb_name_t		$netdb_name_type /**/
-#define Netdb_net_t		$netdb_net_type /**/
-
-/* PERL_OTHERLIBDIRS:
- *	This variable contains a colon-separated set of paths for the perl
- *	binary to search for additional library files or modules.
- *	These directories will be tacked to the end of @INC.
- *	Perl will automatically search below each path for version-
- *	and architecture-specific directories.  See PERL_INC_VERSION_LIST
- *	for more details.
- */
-#$d_perl_otherlibdirs PERL_OTHERLIBDIRS "$otherlibdirs"		/**/
-
-/* HAS_QUAD:
- *	This symbol, if defined, tells that there's a 64-bit integer type,
- *	Quad_t, and its unsigned counterpar, Uquad_t. QUADKIND will be one
- *	of QUAD_IS_INT, QUAD_IS_LONG, QUAD_IS_LONG_LONG, or QUAD_IS_INT64_T.
- */
-#$d_quad HAS_QUAD	/**/
-#ifdef HAS_QUAD
-#   define Quad_t $quadtype	/**/
-#   define Uquad_t $uquadtype	/**/
-#   define QUADKIND $quadkind	/**/
-#   define QUAD_IS_INT	1
-#   define QUAD_IS_LONG	2
-#   define QUAD_IS_LONG_LONG	3
-#   define QUAD_IS_INT64_T	4
-#endif
-
 /* IVTYPE:
  *	This symbol defines the C type used for Perl's IV.
  */
@@ -4053,89 +4372,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define	NVff		$nvfformat		/**/
 #define	NVgf		$nvgformat		/**/
 
-/* Pid_t:
- *	This symbol holds the type used to declare process ids in the kernel.
- *	It can be int, uint, pid_t, etc... It may be necessary to include
- *	<sys/types.h> to get any typedef'ed information.
- */
-#define Pid_t $pidtype		/* PID type */
-
-/* INSTALL_PREFIX:
- *	This symbol contains the "root" of installation tree for this package.
- *	The program should be prepared to do ~ expansion.
- */
-/* INSTALL_PREFIX_EXP:
- *	This symbol contains the "root" of installation tree for this package
- *	to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-#define INSTALL_PREFIX "$installprefix"		/**/
-#define INSTALL_PREFIX_EXP "$installprefixexp"	/**/
-
-/* PRIVLIB:
- *	This symbol contains the name of the private library for this package.
- *	The library is private in the sense that it needn't be in anyone's
- *	execution path, but it should be accessible by the world.  The program
- *	should be prepared to do ~ expansion.
- */
-/* PRIVLIB_EXP:
- *	This symbol contains the ~name expanded version of PRIVLIB, to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-#define PRIVLIB "$privlib"		/**/
-#define PRIVLIB_EXP "$privlibexp"		/**/
-
-/* CAN_PROTOTYPE:
- *	If defined, this macro indicates that the C compiler can handle
- *	function prototypes.
- */
-/* _:
- *	This macro is used to declare function parameters for folks who want
- *	to make declarations with prototypes using a different style than
- *	the above macros.  Use double parentheses.  For example:
- *
- *		int main _((int argc, char *argv[]));
- */
-#$prototype	CAN_PROTOTYPE	/**/
-#ifdef CAN_PROTOTYPE
-#define	_(args) args
-#else
-#define	_(args) ()
-#endif
-
-/* PTRSIZE:
- *	This symbol contains the size of a pointer, so that the C preprocessor
- *	can make decisions based on it.  It will be sizeof(void *) if
- *	the compiler supports (void *); otherwise it will be
- *	sizeof(char *).
- */
-#define PTRSIZE $ptrsize		/**/
-
-/* Drand01:
- *	This macro is to be used to generate uniformly distributed
- *	random numbers over the range [0., 1.[.  You may have to supply
- *	an 'extern double drand48();' in your program since SunOS 4.1.3
- *	doesn't provide you with anything relevant in its headers.
- *	See HAS_DRAND48_PROTO.
- */
-/* Rand_seed_t:
- *	This symbol defines the type of the argument of the
- *	random seed function.
- */
-/* seedDrand01:
- *	This symbol defines the macro to be used in seeding the
- *	random number generator (see Drand01).
- */
-/* RANDBITS:
- *	This symbol indicates how many bits are produced by the
- *	function used to generate normalized random numbers.
- *	Values include 15, 16, 31, and 48.
- */
-#define Drand01()		$drand01		/**/
-#define Rand_seed_t		$randseedtype		/**/
-#define seedDrand01(x)	$seedfunc((Rand_seed_t)x)	/**/
-#define RANDBITS		$randbits		/**/
-
 /* SELECT_MIN_BITS:
  *	This symbol holds the minimum number of bits operated by select.
  *	That is, if you do select(n, ...), how many bits at least will be
@@ -4145,134 +4381,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #define SELECT_MIN_BITS 	$selectminbits	/**/
 
-/* Select_fd_set_t:
- *	This symbol holds the type used for the 2nd, 3rd, and 4th
- *	arguments to select.  Usually, this is 'fd_set *', if HAS_FD_SET
- *	is defined, and 'int *' otherwise.  This is only useful if you 
- *	have select(), of course.
- */
-#define Select_fd_set_t 	$selecttype	/**/
-
-/* SH_PATH:
- *	This symbol contains the full pathname to the shell used on this
- *	on this system to execute Bourne shell scripts.  Usually, this will be
- *	/bin/sh, though it's possible that some systems will have /bin/ksh,
- *	/bin/pdksh, /bin/ash, /bin/bash, or even something such as
- *	D:/bin/sh.exe.
- */
-#define SH_PATH "$sh"  /**/
-
-/* SIG_NAME:
- *	This symbol contains a list of signal names in order of
- *	signal number. This is intended
- *	to be used as a static array initialization, like this:
- *		char *sig_name[] = { SIG_NAME };
- *	The signals in the list are separated with commas, and each signal
- *	is surrounded by double quotes. There is no leading SIG in the signal
- *	name, i.e. SIGQUIT is known as "QUIT".
- *	Gaps in the signal numbers (up to NSIG) are filled in with NUMnn,
- *	etc., where nn is the actual signal number (e.g. NUM37).
- *	The signal number for sig_name[i] is stored in sig_num[i].
- *	The last element is 0 to terminate the list with a NULL.  This
- *	corresponds to the 0 at the end of the sig_name_init list.
- *	Note that this variable is initialized from the sig_name_init,
- *	not from sig_name (which is unused).
- */
-/* SIG_NUM:
- *	This symbol contains a list of signal numbers, in the same order as the
- *	SIG_NAME list. It is suitable for static array initialization, as in:
- *		int sig_num[] = { SIG_NUM };
- *	The signals in the list are separated with commas, and the indices
- *	within that list and the SIG_NAME list match, so it's easy to compute
- *	the signal name from a number or vice versa at the price of a small
- *	dynamic linear lookup. 
- *	Duplicates are allowed, but are moved to the end of the list.
- *	The signal number corresponding to sig_name[i] is sig_number[i].
- *	if (i < NSIG) then sig_number[i] == i.  
- *	The last element is 0, corresponding to the 0 at the end of
- *	the sig_name_init list.
- *	Note that this variable is initialized from the sig_num_init,
- *	not from sig_num (which is unused).
- */
-/* SIG_SIZE:
- *	This variable contains the number of elements of the SIG_NAME
- *	and SIG_NUM arrays, excluding the final NULL entry.
- */
-#define SIG_NAME $sig_name_init		/**/
-#define SIG_NUM  $sig_num_init		/**/
-#define SIG_SIZE $sig_size			/**/
-
-/* SITEARCH:
- *	This symbol contains the name of the private library for this package.
- *	The library is private in the sense that it needn't be in anyone's
- *	execution path, but it should be accessible by the world.  The program
- *	should be prepared to do ~ expansion.
- *	The standard distribution will put nothing in this directory.
- *	After perl has been installed, users may install their own local
- *	architecture-dependent modules in this directory with
- *		MakeMaker Makefile.PL
- *	or equivalent.  See INSTALL for details.
- */
-/* SITEARCH_EXP:
- *	This symbol contains the ~name expanded version of SITEARCH, to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-#$d_sitearch SITEARCH "$sitearch"		/**/
-#$d_sitearch SITEARCH_EXP "$sitearchexp"		/**/
-
-/* SITELIB:
- *	This symbol contains the name of the private library for this package.
- *	The library is private in the sense that it needn't be in anyone's
- *	execution path, but it should be accessible by the world.  The program
- *	should be prepared to do ~ expansion.
- *	The standard distribution will put nothing in this directory.
- *	After perl has been installed, users may install their own local
- *	architecture-independent modules in this directory with
- *		MakeMaker Makefile.PL
- *	or equivalent.  See INSTALL for details.
- */
-/* SITELIB_EXP:
- *	This symbol contains the ~name expanded version of SITELIB, to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-/* SITELIB_STEM:
- *	This define is SITELIB_EXP with any trailing version-specific component
- *	removed.  The elements in inc_version_list (inc_version_list.U) can
- *	be tacked onto this variable to generate a list of directories to search.
- */
-#define SITELIB "$sitelib"		/**/
-#define SITELIB_EXP "$sitelibexp"		/**/
-#define SITELIB_STEM "$sitelib_stem"		/**/
-
-/* Size_t_size:
- *	This symbol holds the size of a Size_t in bytes.
- */
-#define Size_t_size $sizesize		/* */
-
-/* Size_t:
- *	This symbol holds the type used to declare length parameters
- *	for string functions.  It is usually size_t, but may be
- *	unsigned long, int, etc.  It may be necessary to include
- *	<sys/types.h> to get any typedef'ed information.
- */
-#define Size_t $sizetype	 /* length paramater for string functions */
-
-/* Sock_size_t:
- *	This symbol holds the type used for the size argument of
- *	various socket calls (just the base type, not the pointer-to).
- */
-#define Sock_size_t		$socksizetype /**/
-
-/* SSize_t:
- *	This symbol holds the type used by functions that return
- *	a count of bytes or an error condition.  It must be a signed type.
- *	It is usually ssize_t, but may be long or int, etc.
- *	It may be necessary to include <sys/types.h> or <unistd.h>
- *	to get any typedef'ed information.
- *	We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
- */
-#define SSize_t $ssizetype	 /* signed count of bytes */
-
 /* STARTPERL:
  *	This variable contains the string to put in front of a perl
  *	script to make sure (one hopes) that it runs with perl and not
@@ -4280,12 +4388,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #define STARTPERL "$startperl"		/**/
 
-/* STDCHAR:
- *	This symbol is defined to be the type of char used in stdio.h.
- *	It has the values "unsigned char" or "char".
- */
-#define STDCHAR $stdchar	/**/
-
 /* HAS_STDIO_STREAM_ARRAY:
  *	This symbol, if defined, tells that there is an array
  *	holding the stdio streams.
@@ -4297,29 +4399,6 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$d_stdio_stream_array	HAS_STDIO_STREAM_ARRAY	/**/
 #define STDIO_STREAM_ARRAY	$stdio_stream_array
 
-/* Uid_t_f:
- *	This symbol defines the format string used for printing a Uid_t.
- */
-#define	Uid_t_f		$uidformat		/**/
-
-/* Uid_t_sign:
- *	This symbol holds the signedess of a Uid_t.
- *	1 for unsigned, -1 for signed.
- */
-#define Uid_t_sign	$uidsign		/* UID sign */
-
-/* Uid_t_size:
- *	This symbol holds the size of a Uid_t in bytes.
- */
-#define Uid_t_size $uidsize		/* UID size */
-
-/* Uid_t:
- *	This symbol holds the type used to declare user ids in the kernel.
- *	It can be int, ushort, uid_t, etc... It may be necessary to include
- *	<sys/types.h> to get any typedef'ed information.
- */
-#define Uid_t $uidtype		/* UID type */
-
 /* USE_64_BIT_INT:
  *	This symbol, if defined, indicates that 64-bit integers should
  *	be used when available.  If not defined, the native integers
@@ -4404,86 +4483,5 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #$usesocks	USE_SOCKS		/**/
 #endif
 
-/* USE_ITHREADS:
- *	This symbol, if defined, indicates that Perl should be built to
- *	use the interpreter-based threading implementation.
- */
-/* USE_5005THREADS:
- *	This symbol, if defined, indicates that Perl should be built to
- *	use the 5.005-based threading implementation.
- *	Only valid up to 5.8.x.
- */
-/* OLD_PTHREADS_API:
- *	This symbol, if defined, indicates that Perl should
- *	be built to use the old draft POSIX threads API.
- */
-/* USE_REENTRANT_API:
- *	This symbol, if defined, indicates that Perl should
- *	try to use the various _r versions of library functions.
- *	This is extremely experimental.
- */
-#$use5005threads	USE_5005THREADS		/**/
-#$useithreads	USE_ITHREADS		/**/
-#if defined(USE_5005THREADS) && !defined(USE_ITHREADS)
-#define		USE_THREADS		/* until src is revised*/
-#endif
-#$d_oldpthreads	OLD_PTHREADS_API		/**/
-#$usereentrant	USE_REENTRANT_API	/**/
-
-/* PERL_VENDORARCH:
- *	If defined, this symbol contains the name of a private library.
- *	The library is private in the sense that it needn't be in anyone's
- *	execution path, but it should be accessible by the world.
- *	It may have a ~ on the front.
- *	The standard distribution will put nothing in this directory.
- *	Vendors who distribute perl may wish to place their own
- *	architecture-dependent modules and extensions in this directory with
- *		MakeMaker Makefile.PL INSTALLDIRS=vendor
- *	or equivalent.  See INSTALL for details.
- */
-/* PERL_VENDORARCH_EXP:
- *	This symbol contains the ~name expanded version of PERL_VENDORARCH, to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-#$d_vendorarch PERL_VENDORARCH "$vendorarch"		/**/
-#$d_vendorarch PERL_VENDORARCH_EXP "$vendorarchexp"		/**/
-
-/* PERL_VENDORLIB_EXP:
- *	This symbol contains the ~name expanded version of VENDORLIB, to be used
- *	in programs that are not prepared to deal with ~ expansion at run-time.
- */
-/* PERL_VENDORLIB_STEM:
- *	This define is PERL_VENDORLIB_EXP with any trailing version-specific component
- *	removed.  The elements in inc_version_list (inc_version_list.U) can
- *	be tacked onto this variable to generate a list of directories to search.
- */
-#$d_vendorlib PERL_VENDORLIB_EXP "$vendorlibexp"		/**/
-#$d_vendorlib PERL_VENDORLIB_STEM "$vendorlib_stem"		/**/
-
-/* VOIDFLAGS:
- *	This symbol indicates how much support of the void type is given by this
- *	compiler.  What various bits mean:
- *
- *	    1 = supports declaration of void
- *	    2 = supports arrays of pointers to functions returning void
- *	    4 = supports comparisons between pointers to void functions and
- *		    addresses of void functions
- *	    8 = suports declaration of generic void pointers
- *
- *	The package designer should define VOIDUSED to indicate the requirements
- *	of the package.  This can be done either by #defining VOIDUSED before
- *	including config.h, or by defining defvoidused in Myinit.U.  If the
- *	latter approach is taken, only those flags will be tested.  If the
- *	level of void support necessary is not present, defines void to int.
- */
-#ifndef VOIDUSED
-#define VOIDUSED $defvoidused
-#endif
-#define VOIDFLAGS $voidflags
-#if (VOIDFLAGS & VOIDUSED) != VOIDUSED
-#define void int		/* is void to be avoided? */
-#define M_VOID			/* Xenix strikes again */
-#endif
-
 #endif
 !GROK!THIS!
diff --git a/embed.fnc b/embed.fnc
index 3e601e5662..d5d062509c 100644
--- a/embed.fnc
+++ b/embed.fnc
@@ -1831,6 +1831,9 @@ s	|void	|curmad		|char slot|NULLOK SV *sv
 Mp	|int	|madlex
 Mp	|int	|madparse
 #endif
+#if !defined(HAS_SIGNBIT)
+AMdnoP	|int	|Perl_signbit	|NV f
+#endif
 
 END_EXTERN_C
 /*
diff --git a/embed.h b/embed.h
index f72599246c..112ba79861 100644
--- a/embed.h
+++ b/embed.h
@@ -1852,6 +1852,8 @@
 #define madparse		Perl_madparse
 #endif
 #endif
+#if !defined(HAS_SIGNBIT)
+#endif
 #define ck_anoncode		Perl_ck_anoncode
 #define ck_bitop		Perl_ck_bitop
 #define ck_chdir		Perl_ck_chdir
@@ -4070,6 +4072,8 @@
 #define madparse()		Perl_madparse(aTHX)
 #endif
 #endif
+#if !defined(HAS_SIGNBIT)
+#endif
 #define ck_anoncode(a)		Perl_ck_anoncode(aTHX_ a)
 #define ck_bitop(a)		Perl_ck_bitop(aTHX_ a)
 #define ck_chdir(a)		Perl_ck_chdir(aTHX_ a)
diff --git a/global.sym b/global.sym
index 449063aa8d..3a63bbcb22 100644
--- a/global.sym
+++ b/global.sym
@@ -735,4 +735,5 @@ Perl_my_cxt_init
 Perl_my_cxt_index
 Perl_my_strlcat
 Perl_my_strlcpy
+Perl_signbit
 # ex: set ro:
diff --git a/numeric.c b/numeric.c
index 6720726cfb..20fd7bd2df 100644
--- a/numeric.c
+++ b/numeric.c
@@ -1024,6 +1024,38 @@ Perl_my_frexpl(long double x, int *e) {
 #endif
 
 /*
+=for apidoc Perl_signbit
+
+Return a non-zero integer if the sign bit on an NV is set, and 0 if
+it is not.  
+
+If Configure detects this system has a signbit() that will work with
+our NVs, then we just use it via the #define in perl.h.  Otherwise,
+fall back on this implementation.  As a first pass, this gets everything
+right except -0.0.  Alas, catching -0.0 is the main use for this function,
+so this is not too helpful yet.  Still, at least we have the scaffolding
+in place to support other systems, should that prove useful.
+
+
+Configure notes:  This function is called 'Perl_signbit' instead of a
+plain 'signbit' because it is easy to imagine a system having a signbit()
+function or macro that doesn't happen to work with our particular choice
+of NVs.  We shouldn't just re-#define signbit as Perl_signbit and expect
+the standard system headers to be happy.  Also, this is a no-context
+function (no pTHX_) because Perl_signbit() is usually re-#defined in
+perl.h as a simple macro call to the system's signbit().
+Users should just always call Perl_signbit().
+
+=cut
+*/
+#if !defined(HAS_SIGNBIT)
+int
+Perl_signbit(NV x) {
+    return (x < 0.0) ? 1 : 0;
+}
+#endif
+
+/*
  * Local variables:
  * c-indentation-style: bsd
  * c-basic-offset: 4
diff --git a/perl.h b/perl.h
index e2d4253f20..f1c88d4176 100644
--- a/perl.h
+++ b/perl.h
@@ -3409,6 +3409,10 @@ long vtohl(long n);
 #define U_I(what) ((unsigned int)U_32(what))
 #define U_L(what) U_32(what)
 
+#ifdef HAS_SIGNBIT
+#  define Perl_signbit signbit
+#endif
+
 /* These do not care about the fractional part, only about the range. */
 #define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
 #define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
diff --git a/pod/perlapi.pod b/pod/perlapi.pod
index 106839d0cd..b8687945af 100644
--- a/pod/perlapi.pod
+++ b/pod/perlapi.pod
@@ -2913,6 +2913,37 @@ number may use '_' characters to separate digits.
 =for hackers
 Found in file numeric.c
 
+=item Perl_signbit
+X<Perl_signbit>
+
+Return a non-zero integer if the sign bit on an NV is set, and 0 if
+it is not.  
+
+If Configure detects this system has a signbit() that will work with
+our NVs, then we just use it via the #define in perl.h.  Otherwise,
+fall back on this implementation.  As a first pass, this gets everything
+right except -0.0.  Alas, catching -0.0 is the main use for this function,
+so this is not too helpful yet.  Still, at least we have the scaffolding
+in place to support other systems, should that prove useful.
+
+
+Configure notes:  This function is called 'Perl_signbit' instead of a
+plain 'signbit' because it is easy to imagine a system having a signbit()
+function or macro that doesn't happen to work with our particular choice
+of NVs.  We shouldn't just re-#define signbit as Perl_signbit and expect
+the standard system headers to be happy.  Also, this is a no-context
+function (no pTHX_) because Perl_signbit() is usually re-#defined in
+perl.h as a simple macro call to the system's signbit().
+Users should just always call Perl_signbit().
+
+NOTE: this function is experimental and may change or be
+removed without notice.
+
+	int	Perl_signbit(NV f)
+
+=for hackers
+Found in file numeric.c
+
 =item scan_bin
 X<scan_bin>
 
diff --git a/proto.h b/proto.h
index 8199ec2a7c..a9d6c93c9e 100644
--- a/proto.h
+++ b/proto.h
@@ -4593,6 +4593,11 @@ STATIC void	S_curmad(pTHX_ char slot, SV *sv);
 PERL_CALLCONV int	Perl_madlex(pTHX);
 PERL_CALLCONV int	Perl_madparse(pTHX);
 #endif
+#if !defined(HAS_SIGNBIT)
+PERL_CALLCONV int	Perl_signbit(NV f)
+			__attribute__pure__;
+
+#endif
 
 END_EXTERN_C
 /*