Configure update. Remove last trace of PTHREADS_CREATED_JOINABLE

(from vos/config.h).  Update Porting/{Glossary,config*}.

p4raw-id: //depot/cfgperl@2204

1 files changed, 267 insertions, 38 deletions

diff --git a/Porting/Glossary b/Porting/Glossary
index f681679113..d19328c064 100644
--- a/Porting/Glossary
+++ b/Porting/Glossary
@@ -4,11 +4,6 @@ programs (e.g. I_UNISTD) are already described in config_h.SH.  [`configpm'
 generates pod documentation for Config.pm from this file--please try to keep
 the formatting regular.]
 
-Mcc (Loc.U):
-	This variable is be used internally by Configure to determine the
-	full pathname (if any) of the Mcc program.  After Configure runs,
-	the value is reset to a plain "Mcc" and is not useful.
-
 _a (Unix.U):
 	This variable defines the extension used for ordinary libraries.
 	For unix, it is '.a'.  The '.' is included.  Other possible
@@ -67,6 +62,9 @@ archlibexp (archlib.U):
 	This variable is the same as the archlib variable, but is
 	filename expanded at configuration time, for convenient use.
 
+archname64 (use64bits.U):
+	This variable is used for the 64-bitness part of $archname.
+
 archname (archname.U):
 	This variable is a short name to characterize the current
 	architecture.  It is used mainly to construct the default archlib.
@@ -221,14 +219,14 @@ cppflags (ccflags.U):
 	processor. It is up to the Makefile to use it.
 
 cpplast (cppstdin.U):
-	This variable has the same functionality as cppminus, only it applies to
-	cpprun and not cppstdin.
+	This variable has the same functionality as cppminus, only it applies
+	to cpprun and not cppstdin.
 
 cppminus (cppstdin.U):
 	This variable contains the second part of the string which will invoke
 	the C preprocessor on the standard input and produce to standard
-	output.  This variable will have the value "-" if cppstdin needs a minus
-	to specify standard input, otherwise the value is "".
+	output.  This variable will have the value "-" if cppstdin needs
+	a minus to specify standard input, otherwise the value is "".
 
 cpprun (cppstdin.U):
 	This variable contains the command which will invoke a C preprocessor
@@ -254,15 +252,14 @@ csh (Loc.U):
 	full pathname (if any) of the csh program.  After Configure runs,
 	the value is reset to a plain "csh" and is not useful.
 
-d_Gconvert (d_gconvert.U):
-	This variable holds what Gconvert is defined as to convert
-	floating point numbers into strings. It could be 'gconvert'
-	or a more complex macro emulating gconvert with gcvt() or sprintf.
-
 d_access (d_access.U):
 	This variable conditionally defines HAS_ACCESS if the access() system
 	call is available to check for access permissions using real IDs.
 
+d_accessx (d_accessx.U):
+	This variable conditionally defines the HAS_ACCESSX symbol, which
+	indicates to the C program that the accessx() routine is available.
+
 d_alarm (d_alarm.U):
 	This variable conditionally defines the HAS_ALARM symbol, which
 	indicates to the C program that the alarm() routine is available.
@@ -356,10 +353,25 @@ d_dbl_dig (d_dbl_dig.U):
 	header files provide DBL_DIG, which is the number of significant
 	digits in a double precision number.
 
+d_dbmclose64 (dbm64.U):
+	This variable conditionally defines the HAS_DBMCLOSE64 symbol, which
+	indicates to the C program that the dbmclose64() routine is available.
+
+d_dbminit64 (dbm64.U):
+	This variable conditionally defines the HAS_DBMINIT64 symbol, which
+	indicates to the C program that the dbminit64() routine is available.
+
+d_delete64 (dbm64.U):
+	This variable conditionally defines the HAS_DELETE64 symbol, which
+	indicates to the C program that the delete64() routine is available.
+
 d_difftime (d_difftime.U):
 	This variable conditionally defines the HAS_DIFFTIME symbol, which
 	indicates to the C program that the difftime() routine is available.
 
+d_dirent64s (io64.U):
+	This symbol will be defined if the C compiler supports struct dirent64.
+
 d_dirnamlen (i_dirent.U):
 	This variable conditionally defines DIRNAMLEN, which indicates
 	to the C program that the length of directory entry names is
@@ -383,10 +395,20 @@ d_dosuid (d_dosuid.U):
 	tells the C program that it should insert setuid emulation code
 	on hosts which have setuid #! scripts disabled.
 
+d_drand48proto (d_drand48proto.U):
+	This variable conditionally defines the HAS_DRAND48_PROTO symbol,
+	which indicates to the C program that the system provides
+	a prototype for the drand48() function.  Otherwise, it is
+	up to the program to supply one.
+
 d_dup2 (d_dup2.U):
 	This variable conditionally defines HAS_DUP2 if dup2() is
 	available to duplicate file descriptors.
 
+d_eaccess (d_eaccess.U):
+	This variable conditionally defines the HAS_EACCESS symbol, which
+	indicates to the C program that the eaccess() routine is available.
+
 d_endgrent (d_endgrent.U):
 	This variable conditionally defines the HAS_ENDGRENT symbol, which
 	indicates to the C program that the endgrent() routine is available
@@ -451,18 +473,37 @@ d_fds_bits (d_fd_set.U):
 	a half-fast job and neglected to provide the macros to manipulate
 	an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
 
+d_fetch64 (dbm64.U):
+	This variable conditionally defines the HAS_FETCH64 symbol, which
+	indicates to the C program that the fetch64() routine is available.
+
+d_fgetpos64 (stdio64.U):
+	This variable conditionally defines the HAS_FGETPOS64 symbol, which
+	indicates to the C program that the fgetpos64() routine is available.
+
 d_fgetpos (d_fgetpos.U):
 	This variable conditionally defines HAS_FGETPOS if fgetpos() is
 	available to get the file position indicator.
 
+d_firstkey64 (dbm64.U):
+	This variable conditionally defines the HAS_FIRSTKEY64 symbol, which
+	indicates to the C program that the firstkey64() routine is available.
+
 d_flexfnam (d_flexfnam.U):
 	This variable conditionally defines the FLEXFILENAMES symbol, which
 	indicates that the system supports filenames longer than 14 characters.
 
+d_flock64s (io64.U):
+	This symbol will be defined if the C compiler supports struct flock64.
+
 d_flock (d_flock.U):
 	This variable conditionally defines HAS_FLOCK if flock() is
 	available to do file locking.
 
+d_fopen64 (stdio64.U):
+	This variable conditionally defines the HAS_FOPEN64 symbol, which
+	indicates to the C program that the fopen64() routine is available.
+
 d_fork (d_fork.U):
 	This variable conditionally defines the HAS_FORK symbol, which
 	indicates to the C program that the fork() routine is available.
@@ -473,15 +514,64 @@ d_fpathconf (d_pathconf.U):
 	to determine file-system related limits and options associated
 	with a given open file descriptor.
 
+d_freopen64 (stdio64.U):
+	This variable conditionally defines the HAS_FREOPEN64 symbol, which
+	indicates to the C program that the freopen64() routine is available.
+
+d_fseek64 (stdio64.U):
+	This variable conditionally defines the HAS_FSEEK64 symbol, which
+	indicates to the C program that the fseek64() routine is available.
+
+d_fseeko64 (stdio64.U):
+	This variable conditionally defines the HAS_FSEEKO64 symbol, which
+	indicates to the C program that the fseeko64() routine is available.
+
+d_fseeko (d_fseeko.U):
+	This variable conditionally defines the HAS_FSEEKO symbol, which
+	indicates to the C program that the fseeko() routine is available.
+
+d_fsetpos64 (stdio64.U):
+	This variable conditionally defines the HAS_FSETPOS64 symbol, which
+	indicates to the C program that the fsetpos64() routine is available.
+
 d_fsetpos (d_fsetpos.U):
 	This variable conditionally defines HAS_FSETPOS if fsetpos() is
 	available to set the file position indicator.
 
+d_fstat64 (io64.U):
+	This variable conditionally defines the HAS_FSTAT64 symbol, which
+	indicates to the C program that the fstat64() routine is available.
+
+d_ftell64 (stdio64.U):
+	This variable conditionally defines the HAS_FTELL64 symbol, which
+	indicates to the C program that the ftell64() routine is available.
+
+d_ftello64 (stdio64.U):
+	This variable conditionally defines the HAS_FTELLO64 symbol, which
+	indicates to the C program that the ftello64() routine is available.
+
+d_ftello (d_ftello.U):
+	This variable conditionally defines the HAS_FTELLO symbol, which
+	indicates to the C program that the ftello() routine is available.
+
 d_ftime (d_ftime.U):
 	This variable conditionally defines the HAS_FTIME symbol, which indicates
 	that the ftime() routine exists.  The ftime() routine is basically
 	a sub-second accuracy clock.
 
+d_ftruncate64 (io64.U):
+	This variable conditionally defines the HAS_FTRUNCATE64 symbol, which
+	indicates to the C program that the ftruncate64() routine is available.
+
+d_Gconvert (d_gconvert.U):
+	This variable holds what Gconvert is defined as to convert
+	floating point numbers into strings. It could be 'gconvert'
+	or a more complex macro emulating gconvert with gcvt() or sprintf.
+	Possible values are:
+		d_Gconvert='gconvert((x),(n),(t),(b))'
+		d_Gconvert='gcvt((x),(n),(b))'
+		d_Gconvert='sprintf((b),"%.*g",(n),(x))'
+
 d_getgrent (d_getgrent.U):
 	This variable conditionally defines the HAS_GETGRENT symbol, which
 	indicates to the C program that the getgrent() routine is available
@@ -639,6 +729,12 @@ d_inetaton (d_inetaton.U):
 	indicates to the C program that the inet_aton() function is available
 	to parse IP address "dotted-quad" strings.
 
+d_ino64t (io64.U):
+	This symbol will be defined if the C compiler supports ino64_t.
+
+d_int64t (i_inttypes.U):
+	    This symbol will be defined if the C compiler supports int64_t.
+
 d_isascii (d_isascii.U):
 	This variable conditionally defines the HAS_ISASCII constant,
 	which indicates to the C program that isascii() is available.
@@ -661,6 +757,10 @@ d_locconv (d_locconv.U):
 	This variable conditionally defines HAS_LOCALECONV if localeconv() is
 	available for numeric and monetary formatting conventions.
 
+d_lockf64 (io64.U):
+	This variable conditionally defines the HAS_LOCKF64 symbol, which
+	indicates to the C program that the lockf64() routine is available.
+
 d_lockf (d_lockf.U):
 	This variable conditionally defines HAS_LOCKF if lockf() is
 	available to do file locking.
@@ -673,6 +773,14 @@ d_longlong (d_longlong.U):
 	This variable conditionally defines HAS_LONG_LONG if 
 	the long long type is supported.
 
+d_lseek64 (io64.U):
+	This variable conditionally defines the HAS_LSEEK64 symbol, which
+	indicates to the C program that the lseek64() routine is available.
+
+d_lstat64 (io64.U):
+	This variable conditionally defines the HAS_LSTAT64 symbol, which
+	indicates to the C program that the lstat64() routine is available.
+
 d_lstat (d_lstat.U):
 	This variable conditionally defines HAS_LSTAT if lstat() is
 	available to do file stats on symbolic links.
@@ -750,10 +858,17 @@ d_mymalloc (mallocsrc.U):
 	of the source want to take special action if MYMALLOC is used.
 	This may include different sorts of profiling or error detection.
 
+d_nextkey64 (dbm64.U):
+	This variable conditionally defines the HAS_NEXTKEY64 symbol, which
+	indicates to the C program that the nextkey64() routine is available.
+
 d_nice (d_nice.U):
 	This variable conditionally defines the HAS_NICE symbol, which
 	indicates to the C program that the nice() routine is available.
 
+d_off64t (io64.U):
+	This symbol will be defined if the C compiler supports off64_t.
+
 d_oldpthreads (usethreads.U):
 	This variable conditionally defines the OLD_PTHREADS_API symbol,
 	and indicates that Perl should be built to use the old
@@ -769,6 +884,14 @@ d_open3 (d_open3.U):
 	which indicates to the C program that the 3 argument version of
 	the open(2) function is available.
 
+d_open64 (io64.U):
+	This variable conditionally defines the HAS_OPEN64 symbol, which
+	indicates to the C program that the open64() routine is available.
+
+d_opendir64 (io64.U):
+	This variable conditionally defines the HAS_OPENDIR64 symbol, which
+	indicates to the C program that the opendir64() routine is available.
+
 d_pathconf (d_pathconf.U):
 	This variable conditionally defines the HAS_PATHCONF symbol, which
 	indicates to the C program that the pathconf() routine is available
@@ -800,16 +923,15 @@ d_portable (d_portable.U):
 	indicates to the C program that it should not assume that it is
 	running on the machine it was compiled on.
 
+d_pthread_create_joinable (d_pthrattrj.U):
+	This variable conditionally defines pthread_create_joinable.
+	undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
+
 d_pthread_yield (d_pthread_y.U):
 	This variable conditionally defines the HAS_PTHREAD_YIELD
 	symbol if the pthread_yield routine is available to yield
 	the execution of the current thread.
 
-d_pthreads_created_joinable (d_pthreadj.U):
-	This variable conditionally defines the PTHREADS_CREATED_JOINABLE
-	symbol if pthreads are created in the joinable (aka undetached) 
-	state.
-
 d_pwage (i_pwd.U):
 	This variable conditionally defines PWAGE, which indicates
 	that struct passwd contains pw_age.
@@ -842,6 +964,10 @@ d_pwquota (i_pwd.U):
 	This variable conditionally defines PWQUOTA, which indicates
 	that struct passwd contains pw_quota.
 
+d_readdir64 (io64.U):
+	This variable conditionally defines the HAS_READDIR64 symbol, which
+	indicates to the C program that the readdir64() routine is available.
+
 d_readdir (d_readdir.U):
 	This variable conditionally defines HAS_READDIR if readdir() is
 	available to read directory entries.
@@ -882,6 +1008,10 @@ d_sched_yield (d_pthread_y.U):
 	symbol if the sched_yield routine is available to yield
 	the execution of the current thread.
 
+d_seekdir64 (io64.U):
+	This variable conditionally defines the HAS_SEEKDIR64 symbol, which
+	indicates to the C program that the seekdir64() routine is available.
+
 d_seekdir (d_readdir.U):
 	This variable conditionally defines HAS_SEEKDIR if seekdir() is
 	available.
@@ -1068,9 +1198,14 @@ d_sockpair (d_socket.U):
 	This variable conditionally defines the HAS_SOCKETPAIR symbol, which
 	indicates that the BSD socketpair() is supported.
 
+d_stat64 (io64.U):
+	This variable conditionally defines the HAS_STAT64 symbol, which
+	indicates to the C program that the stat64() routine is available.
+
 d_statblks (d_statblks.U):
-	This variable conditionally defines USE_STAT_BLOCKS if this system
-	has a stat structure declaring st_blksize and st_blocks.
+	This variable conditionally defines USE_STAT_BLOCKS
+	if this system has a stat structure declaring
+	st_blksize and st_blocks.
 
 d_stdio_cnt_lval (d_stdstdio.U):
 	This variable conditionally defines STDIO_CNT_LVALUE if the
@@ -1090,6 +1225,10 @@ d_stdstdio (d_stdstdio.U):
 	has a FILE structure declaring usable _ptr and _cnt fields (or
 	equivalent) in stdio.h.
 
+d_store64 (dbm64.U):
+	This variable conditionally defines the HAS_STORE64 symbol, which
+	indicates to the C program that the store64() routine is available.
+
 d_strchr (d_strchr.U):
 	This variable conditionally defines HAS_STRCHR if strchr() and
 	strrchr() are available for string searching.
@@ -1172,6 +1311,10 @@ d_tcsetpgrp (d_tcstpgrp.U):
 	indicates to the C program that the tcsetpgrp() routine is available
 	to set foreground process group ID.
 
+d_telldir64 (io64.U):
+	This variable conditionally defines the HAS_TELLDIR64 symbol, which
+	indicates to the C program that the telldir64() routine is available.
+
 d_telldir (d_readdir.U):
 	This variable conditionally defines HAS_TELLDIR if telldir() is
 	available.
@@ -1186,6 +1329,14 @@ d_times (d_times.U):
 	that the times() routine exists.  The times() routine is normaly
 	provided on UNIX systems. You may have to include <sys/times.h>.
 
+d_tmpfile64 (stdio64.U):
+	This variable conditionally defines the HAS_TMPFILE64 symbol, which
+	indicates to the C program that the tmpfile64() routine is available.
+
+d_truncate64 (io64.U):
+	This variable conditionally defines the HAS_TRUNCATE64 symbol, which
+	indicates to the C program that the truncate64() routine is available.
+
 d_truncate (d_truncate.U):
 	This variable conditionally defines HAS_TRUNCATE if truncate() is
 	available to truncate files.
@@ -1291,6 +1442,13 @@ doublesize (doublesize.U):
 	This variable contains the value of the DOUBLESIZE symbol, which
 	indicates to the C program how many bytes there are in a double.
 
+drand01 (randfunc.U):
+	Indicates the macro to be used to generate normalized
+	random numbers.  Uses randfunc, often divided by
+	(double) (((unsigned long) 1 << randbits)) in order to
+	normalize the result.
+	In C programs, the macro 'Drand01' is mapped to drand01.
+
 dynamic_ext (Extensions.U):
 	This variable holds a list of XS extension files we want to
 	link dynamically into the package.  It is used by Makefile.
@@ -1340,9 +1498,8 @@ extensions (Extensions.U):
 	is available.
 
 find (Loc.U):
-	This variable is be used internally by Configure to determine the
-	full pathname (if any) of the find program.  After Configure runs,
-	the value is reset to a plain "find" and is not useful.
+	This variable is defined but not used by Configure.
+	The value is a plain '' and is not useful.
 
 firstmakefile (Unix.U):
 	This variable defines the first file searched by make.  On unix,
@@ -1480,6 +1637,10 @@ i_grp (i_grp.U):
 	This variable conditionally defines the I_GRP symbol, and indicates
 	whether a C program should include <grp.h>.
 
+i_inttypes (i_inttypes.U):
+	    This variable conditionally defines the I_INTTYPES symbol,
+	    and indicates whether a C program should include <inttypes.h>.
+
 i_limits (i_limits.U):
 	This variable conditionally defines the I_LIMITS symbol, and indicates
 	whether a C program may include <limits.h> to get symbols like WORD_BIT
@@ -1489,6 +1650,10 @@ i_locale (i_locale.U):
 	This variable conditionally defines the I_LOCALE symbol,
 	and indicates whether a C program should include <locale.h>.
 
+i_machcthr (i_machcthr.U):
+	    This variable conditionally defines the I_MACH_CTHREADS symbol,
+	    and indicates whether a C program should include <mach/cthreads.h>.
+
 i_malloc (i_malloc.U):
 	This variable conditionally defines the I_MALLOC symbol, and indicates
 	whether a C program should include <malloc.h>.
@@ -1557,6 +1722,10 @@ i_string (i_string.U):
 	This variable conditionally defines the I_STRING symbol, which
 	indicates that <string.h> should be included rather than <strings.h>.
 
+i_sysaccess (i_sysaccess.U):
+	    This variable conditionally defines the I_SYS_ACCESS symbol,
+	    and indicates whether a C program should include <sys/access.h>.
+
 i_sysdir (i_sysdir.U):
 	This variable conditionally defines the I_SYS_DIR symbol, and indicates
 	whether a C program should include <sys/dir.h>.
@@ -1592,6 +1761,10 @@ i_sysresrc (i_sysresrc.U):
 	This variable conditionally defines the I_SYS_RESOURCE symbol,
 	and indicates whether a C program should include <sys/resource.h>.
 
+i_syssecrt (i_syssecrt.U):
+	    This variable conditionally defines the I_SYS_SECURITY symbol,
+	    and indicates whether a C program should include <sys/security.h>.
+
 i_sysselct (i_sysselct.U):
 	This variable conditionally defines I_SYS_SELECT, which indicates
 	to the C program that it should include <sys/select.h> in order to
@@ -1671,6 +1844,11 @@ i_vfork (i_vfork.U):
 	This variable conditionally defines the I_VFORK symbol, and indicates
 	whether a C program should include vfork.h.
 
+ignore_versioned_solibs (libs.U):
+	This variable should be non-empty if non-versioned shared
+	libraries (libfoo.so.x.y) are to be ignored (because they
+	cannot be linked against).
+
 incpath (usrinc.U):
 	This variable must preceed the normal include path to get hte
 	right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
@@ -1788,9 +1966,8 @@ libswanted (Myinit.U):
 	ahead of ucb or bsd libraries for SVR4.
 
 line (Loc.U):
-	This variable is be used internally by Configure to determine the
-	full pathname (if any) of the line program.  After Configure runs,
-	the value is reset to a plain "line" and is not useful.
+	This variable is defined but not used by Configure.
+	The value is a plain '' and is not useful.
 
 lint (Loc.U):
 	This variable is defined but not used by Configure.
@@ -1849,6 +2026,11 @@ ls (Loc.U):
 	full pathname (if any) of the ls program.  After Configure runs,
 	the value is reset to a plain "ls" and is not useful.
 
+lseeksize (lseektype.U):
+	This variable defines lseektype to be something like off_t, long, 
+	or whatever type is used to declare lseek offset's type in the
+	kernel (which also appears to be lseek's return type).
+
 lseektype (lseektype.U):
 	This variable defines lseektype to be something like off_t, long, 
 	or whatever type is used to declare lseek offset's type in the
@@ -1923,6 +2105,11 @@ man3ext (man3dir.U):
 	have: one of 'n', 'l', or '3'.  The Makefile must supply the '.'.
 	See man3dir.
 
+Mcc (Loc.U):
+	This variable is be used internally by Configure to determine the
+	full pathname (if any) of the Mcc program.  After Configure runs,
+	the value is reset to a plain "Mcc" and is not useful.
+
 medium (models.U):
 	This variable contains a flag which will tell the C compiler and loader
 	to produce a program running with a medium memory model.  If the
@@ -2086,9 +2273,8 @@ path_sep (Unix.U):
 	used to separate elements in the command shell search PATH.
 
 perl (Loc.U):
-	This variable is be used internally by Configure to determine the
-	full pathname (if any) of the perl program.  After Configure runs,
-	the value is reset to a plain "perl" and is not useful.
+	This variable is defined but not used by Configure.
+	The value is a plain '' and is not useful.
 
 perladmin (perladmin.U):
 	Electronic mail address of the perl5 administrator.
@@ -2151,14 +2337,28 @@ prototype (prototype.U):
 	This variable holds the eventual value of CAN_PROTOTYPE, which
 	indicates the C compiler can handle funciton prototypes.
 
+pthread_create_joinable (d_pthrattrj.U):
+	This variable defines the constant to use for creating joinable
+	(aka undetached) pthreads.  Unused if pthread.h defines
+	PTHREAD_CREATE_JOINABLE.  If used, possible values are
+	PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
+
 ptrsize (ptrsize.U):
 	This variable contains the value of the PTRSIZE symbol, which
 	indicates to the C program how many bytes there are in a pointer.
 
-randbits (randbits.U):
-	This variable contains the eventual value of the RANDBITS symbol,
-	which indicates to the C program how many bits of random number
-	the rand() function produces.
+randbits (randfunc.U):
+	Indicates how many bits are produced by the function used to
+	generate normalized random numbers.
+
+randfunc (randfunc.U):
+	Indicates the name of the random number function to use.
+	Values include drand48, random, and rand. In C programs,
+	the 'Drand01' macro is defined to generate uniformly distributed
+	random numbers over the range [0., 1.[ (see drand01 and nrand).
+
+randseedtype (randfunc.U):
+	Indicates the type of the argument of the seedfunc.
 
 ranlib (orderlib.U):
 	This variable is set to the pathname of the ranlib program, if it is
@@ -2185,6 +2385,10 @@ runnm (usenm.U):
 	nm extraction should be performed or not, according to the value
 	of usenm and the flags on the Configure command line.
 
+sched_yield (d_pthread_y.U):
+	This variable defines the way to yield the execution
+	of the current thread.
+
 scriptdir (scriptdir.U):
 	This variable holds the name of the directory in which the user wants
 	to put publicly scripts for the package in question.  It is either
@@ -2201,6 +2405,17 @@ sed (Loc.U):
 	full pathname (if any) of the sed program.  After Configure runs,
 	the value is reset to a plain "sed" and is not useful.
 
+seedfunc (randfunc.U):
+	Indicates the random number generating seed function.
+	Values include srand48, srandom, and srand.
+
+selectminbits (selectminbits.U):
+	This variable holds the minimum number of bits operated by select.
+	That is, if you do select(n, ...), how many bits at least will be
+	cleared in the masks if some activity is detected.  Usually this
+	is either n or 32*ceil(n/32), especially many little-endians do
+	the latter.  This is only useful if you have select(), naturally.
+
 selecttype (selecttype.U):
 	This variable holds the type used for the 2nd, 3rd, and 4th
 	arguments to select.  Usually, this is 'fd_set *', if HAS_FD_SET
@@ -2208,9 +2423,8 @@ selecttype (selecttype.U):
 	have select(), naturally.
 
 sendmail (Loc.U):
-	This variable is be used internally by Configure to determine the
-	full pathname (if any) of the sendmail program.  After Configure runs,
-	the value is reset to a plain "sendmail" and is not useful.
+	This variable is defined but not used by Configure.
+	The value is a plain '' and is not useful.
 
 sh (sh.U):
 	This variable contains the full pathname of the shell used
@@ -2271,12 +2485,18 @@ sig_name_init (sig_name.U):
 	is removed. See sig_num.
 
 sig_num (sig_name.U):
-	This variable holds the signal numbers, comma separated. A 0 is
+	This variable holds the signal numbers, space separated. A ZERO is
 	prepended to the list (corresponding to the fake SIGZERO), and 
 	the list is terminated with a 0.  Those numbers correspond to 
 	the value of the signal listed in the same place within the
 	sig_name list.
 
+sig_num_init (sig_name.U):
+	This variable holds the signal numbers, enclosed in double quotes and
+	separated by commas, suitable for use in the SIG_NUM definition 
+	below.  A "ZERO" is prepended to the list, and the list is 
+	terminated with a plain 0.
+
 signal_t (d_voidsig.U):
 	This variable holds the type of the signal handler (void or int).
 
@@ -2491,10 +2711,19 @@ uniq (Loc.U):
 	full pathname (if any) of the uniq program.  After Configure runs,
 	the value is reset to a plain "uniq" and is not useful.
 
+use64bits (use64bits.U):
+	This variable conditionally defines the USE_64_BITS symbol,
+	and indicates that explicit 64-bit interfaces should be used
+	when available.
+
 usedl (dlsrc.U):
 	This variable indicates if the the system supports dynamic
 	loading of some sort.  See also dlsrc and dlobj.
 
+usemultiplicity (usemultiplicity.U):
+	This variable conditionally defines the MULTIPLICITY symbol,
+	and indicates that Perl should be built to use multiplicity.
+
 usemymalloc (mallocsrc.U):
 	This variable contains y if the malloc that comes with this package
 	is desired over the system's version of malloc.  People often include