Replaced specific checks for function declarations with a generic

routine taken from GNU bfd.

* aclocal.m4 (GROFF_NEED_DECLARATION): New function.
GROFF_PUTENV, GROFF_POPEN, GROFF_PCLOSE, GROFF_HYPOT: Removed.
* configure.in: Use it.
* src/devices/grolbp/lbp.cc, src/include/lib.h,
src/preproc/grn/hgraph.cc, src/preproc/pic/pic.h,
src/roff/groff/groff.cc: Use it.
* Makefile.in, configure: Updated.


* src/devides/grolbp/lbp.h: Removed unused variables.

1 files changed, 295 insertions, 130 deletions

diff --git a/configure b/configure
index bdbb33be..31d9341e 100755
--- a/configure
+++ b/configure
@@ -1473,21 +1473,22 @@ else
 fi
 echo "$ac_t""$CPP" 1>&6
 
-for ac_hdr in unistd.h dirent.h limits.h sys/dir.h stdlib.h strings.h
+for ac_hdr in stdlib.h unistd.h dirent.h limits.h sys/dir.h \
+                 string.h strings.h math.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1481: checking for $ac_hdr" >&5
+echo "configure:1482: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1486 "configure"
+#line 1487 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1491: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1492: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1514,7 +1515,7 @@ fi
 done
 
 echo $ac_n "checking for ISC 3.x or 4.x""... $ac_c" 1>&6
-echo "configure:1518: checking for ISC 3.x or 4.x" >&5
+echo "configure:1519: checking for ISC 3.x or 4.x" >&5
 if grep '[34]\.' /usr/options/cb.name >/dev/null 2>&1
 then
 	echo "$ac_t""yes" 1>&6
@@ -1526,7 +1527,7 @@ else
 	echo "$ac_t""no" 1>&6
 fi
 echo $ac_n "checking whether -D_POSIX_SOURCE is necessary""... $ac_c" 1>&6
-echo "configure:1530: checking whether -D_POSIX_SOURCE is necessary" >&5
+echo "configure:1531: checking whether -D_POSIX_SOURCE is necessary" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1536,7 +1537,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 1540 "configure"
+#line 1541 "configure"
 #include "confdefs.h"
 #include <stdio.h>
 extern "C" { void fileno(int); }
@@ -1544,7 +1545,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1548: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1549: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define _POSIX_SOURCE 1
@@ -1572,28 +1573,28 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking declaration of putenv""... $ac_c" 1>&6
-echo "configure:1577: checking declaration of putenv" >&5
+echo $ac_n "checking for return type of srand""... $ac_c" 1>&6
+echo "configure:1578: checking for return type of srand" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1579 "configure"
+#line 1580 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
-extern "C" { void putenv(int); }
+extern "C" { void srand(unsigned int); }
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1587: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1588: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""no" 1>&6
+  echo "$ac_t""void" 1>&6;cat >> confdefs.h <<\EOF
+#define RET_TYPE_SRAND_IS_VOID 1
+EOF
+
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define STDLIB_H_DECLARES_PUTENV 1
-EOF
-
+  echo "$ac_t""int" 1>&6
 fi
 rm -f conftest*
 ac_ext=c
@@ -1603,6 +1604,8 @@ ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cc_cross
 
+echo $ac_n "checking whether hypot must be declared""... $ac_c" 1>&6
+echo "configure:1609: checking whether hypot must be declared" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1611,30 +1614,53 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking declaration of popen""... $ac_c" 1>&6
-echo "configure:1616: checking declaration of popen" >&5
-cat > conftest.$ac_ext <<EOF
-#line 1618 "configure"
+if eval "test \"`echo '$''{'groff_cv_decl_needed_hypot'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1622 "configure"
 #include "confdefs.h"
+
 #include <stdio.h>
-extern "C" { void popen(int); }
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_MATH_H
+#include <math.h>
+#endif
 int main() {
-
+char *(*pfn) = (char *(*)) hypot
 ; return 0; }
 EOF
-if { (eval echo configure:1626: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1646: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""no" 1>&6
+  groff_cv_decl_needed_hypot=no
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define STDIO_H_DECLARES_POPEN 1
+  groff_cv_decl_needed_hypot=yes
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$groff_cv_decl_needed_hypot" 1>&6
+if test $groff_cv_decl_needed_hypot = yes; then
+	cat >> confdefs.h <<\EOF
+#define NEED_DECLARATION_HYPOT 1
 EOF
 
 fi
-rm -f conftest*
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CPP $CPPFLAGS'
@@ -1642,6 +1668,8 @@ ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cc_cross
 
+echo $ac_n "checking whether popen must be declared""... $ac_c" 1>&6
+echo "configure:1673: checking whether popen must be declared" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1650,30 +1678,53 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking declaration of pclose""... $ac_c" 1>&6
-echo "configure:1655: checking declaration of pclose" >&5
-cat > conftest.$ac_ext <<EOF
-#line 1657 "configure"
+if eval "test \"`echo '$''{'groff_cv_decl_needed_popen'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1686 "configure"
 #include "confdefs.h"
+
 #include <stdio.h>
-extern "C" { void pclose(int); }
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_MATH_H
+#include <math.h>
+#endif
 int main() {
-
+char *(*pfn) = (char *(*)) popen
 ; return 0; }
 EOF
-if { (eval echo configure:1665: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1710: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""no" 1>&6
+  groff_cv_decl_needed_popen=no
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define STDIO_H_DECLARES_PCLOSE 1
+  groff_cv_decl_needed_popen=yes
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$groff_cv_decl_needed_popen" 1>&6
+if test $groff_cv_decl_needed_popen = yes; then
+	cat >> confdefs.h <<\EOF
+#define NEED_DECLARATION_POPEN 1
 EOF
 
 fi
-rm -f conftest*
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CPP $CPPFLAGS'
@@ -1681,6 +1732,8 @@ ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cc_cross
 
+echo $ac_n "checking whether pclose must be declared""... $ac_c" 1>&6
+echo "configure:1737: checking whether pclose must be declared" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1689,30 +1742,53 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking for return type of srand""... $ac_c" 1>&6
-echo "configure:1694: checking for return type of srand" >&5
-cat > conftest.$ac_ext <<EOF
-#line 1696 "configure"
+if eval "test \"`echo '$''{'groff_cv_decl_needed_pclose'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1750 "configure"
 #include "confdefs.h"
+
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-extern "C" { void srand(unsigned int); }
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_MATH_H
+#include <math.h>
+#endif
 int main() {
-
+char *(*pfn) = (char *(*)) pclose
 ; return 0; }
 EOF
-if { (eval echo configure:1704: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1774: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""void" 1>&6;cat >> confdefs.h <<\EOF
-#define RET_TYPE_SRAND_IS_VOID 1
-EOF
-
+  groff_cv_decl_needed_pclose=no
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""int" 1>&6
+  groff_cv_decl_needed_pclose=yes
 fi
 rm -f conftest*
+fi
+
+echo "$ac_t""$groff_cv_decl_needed_pclose" 1>&6
+if test $groff_cv_decl_needed_pclose = yes; then
+	cat >> confdefs.h <<\EOF
+#define NEED_DECLARATION_PCLOSE 1
+EOF
+
+fi
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CPP $CPPFLAGS'
@@ -1720,6 +1796,8 @@ ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cc_cross
 
+echo $ac_n "checking whether putenv must be declared""... $ac_c" 1>&6
+echo "configure:1801: checking whether putenv must be declared" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1728,30 +1806,117 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking for sys_nerr in <errno.h> or <stdio.h>""... $ac_c" 1>&6
-echo "configure:1733: checking for sys_nerr in <errno.h> or <stdio.h>" >&5
-cat > conftest.$ac_ext <<EOF
-#line 1735 "configure"
+if eval "test \"`echo '$''{'groff_cv_decl_needed_putenv'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1814 "configure"
 #include "confdefs.h"
-#include <errno.h>
+
 #include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_MATH_H
+#include <math.h>
+#endif
 int main() {
-int k; k = sys_nerr;
+char *(*pfn) = (char *(*)) putenv
 ; return 0; }
 EOF
-if { (eval echo configure:1743: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1838: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define HAVE_SYS_NERR 1
+  groff_cv_decl_needed_putenv=no
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  groff_cv_decl_needed_putenv=yes
+fi
+rm -f conftest*
+fi
+
+echo "$ac_t""$groff_cv_decl_needed_putenv" 1>&6
+if test $groff_cv_decl_needed_putenv = yes; then
+	cat >> confdefs.h <<\EOF
+#define NEED_DECLARATION_PUTENV 1
 EOF
 
+fi
+ac_ext=c
+# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cc_cross
+
+echo $ac_n "checking whether strncasecmp must be declared""... $ac_c" 1>&6
+echo "configure:1865: checking whether strncasecmp must be declared" >&5
+
+ac_ext=C
+# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
+ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
+cross_compiling=$ac_cv_prog_cxx_cross
+
+if eval "test \"`echo '$''{'groff_cv_decl_needed_strncasecmp'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  cat > conftest.$ac_ext <<EOF
+#line 1878 "configure"
+#include "confdefs.h"
+
+#include <stdio.h>
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_MATH_H
+#include <math.h>
+#endif
+int main() {
+char *(*pfn) = (char *(*)) strncasecmp
+; return 0; }
+EOF
+if { (eval echo configure:1902: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  rm -rf conftest*
+  groff_cv_decl_needed_strncasecmp=no
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""no" 1>&6
+  groff_cv_decl_needed_strncasecmp=yes
 fi
 rm -f conftest*
+fi
+
+echo "$ac_t""$groff_cv_decl_needed_strncasecmp" 1>&6
+if test $groff_cv_decl_needed_strncasecmp = yes; then
+	cat >> confdefs.h <<\EOF
+#define NEED_DECLARATION_STRNCASECMP 1
+EOF
+
+fi
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
 ac_cpp='$CPP $CPPFLAGS'
@@ -1767,21 +1932,21 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking for sys_errlist in <errno.h> or <stdio.h>""... $ac_c" 1>&6
-echo "configure:1772: checking for sys_errlist in <errno.h> or <stdio.h>" >&5
+echo $ac_n "checking for sys_nerr in <errno.h> or <stdio.h>""... $ac_c" 1>&6
+echo "configure:1937: checking for sys_nerr in <errno.h> or <stdio.h>" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1774 "configure"
+#line 1939 "configure"
 #include "confdefs.h"
 #include <errno.h>
 #include <stdio.h>
 int main() {
-int k; k = (int)sys_errlist[0];
+int k; k = sys_nerr;
 ; return 0; }
 EOF
-if { (eval echo configure:1782: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1947: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define HAVE_SYS_ERRLIST 1
+#define HAVE_SYS_NERR 1
 EOF
 
 else
@@ -1806,28 +1971,28 @@ ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
 ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
 cross_compiling=$ac_cv_prog_cxx_cross
 
-echo $ac_n "checking declaration of hypot""... $ac_c" 1>&6
-echo "configure:1811: checking declaration of hypot" >&5
+echo $ac_n "checking for sys_errlist in <errno.h> or <stdio.h>""... $ac_c" 1>&6
+echo "configure:1976: checking for sys_errlist in <errno.h> or <stdio.h>" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1813 "configure"
+#line 1978 "configure"
 #include "confdefs.h"
-#include <math.h>
-extern "C" { double hypot(double,double); }
+#include <errno.h>
+#include <stdio.h>
 int main() {
-
+int k; k = (int)sys_errlist[0];
 ; return 0; }
 EOF
-if { (eval echo configure:1821: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1986: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
-  echo "$ac_t""no" 1>&6
+  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
+#define HAVE_SYS_ERRLIST 1
+EOF
+
 else
   echo "configure: failed program was:" >&5
   cat conftest.$ac_ext >&5
   rm -rf conftest*
-  echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
-#define MATH_H_DECLARES_HYPOT 1
-EOF
-
+  echo "$ac_t""no" 1>&6
 fi
 rm -f conftest*
 ac_ext=c
@@ -1846,16 +2011,16 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking C++ <osfcn.h>""... $ac_c" 1>&6
-echo "configure:1850: checking C++ <osfcn.h>" >&5
+echo "configure:2015: checking C++ <osfcn.h>" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1852 "configure"
+#line 2017 "configure"
 #include "confdefs.h"
 #include <osfcn.h>
 int main() {
 read(0, 0, 0); open(0, 0);
 ; return 0; }
 EOF
-if { (eval echo configure:1859: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2024: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define HAVE_CC_OSFCN_H 1
@@ -1884,16 +2049,16 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking C++ <limits.h>""... $ac_c" 1>&6
-echo "configure:1888: checking C++ <limits.h>" >&5
+echo "configure:2053: checking C++ <limits.h>" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1890 "configure"
+#line 2055 "configure"
 #include "confdefs.h"
 #include <limits.h>
 int main() {
 int x = INT_MIN; int y = INT_MAX; int z = UCHAR_MAX;
 ; return 0; }
 EOF
-if { (eval echo configure:1897: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2062: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define HAVE_CC_LIMITS_H 1
@@ -1922,16 +2087,16 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking for declaration of time_t""... $ac_c" 1>&6
-echo "configure:1926: checking for declaration of time_t" >&5
+echo "configure:2091: checking for declaration of time_t" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1928 "configure"
+#line 2093 "configure"
 #include "confdefs.h"
 #include <time.h>
 int main() {
 time_t t = time(0); struct tm *p = localtime(&t);
 ; return 0; }
 EOF
-if { (eval echo configure:1935: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2100: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 else
@@ -1952,12 +2117,12 @@ ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$a
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking return type of signal handlers""... $ac_c" 1>&6
-echo "configure:1956: checking return type of signal handlers" >&5
+echo "configure:2121: checking return type of signal handlers" >&5
 if eval "test \"`echo '$''{'ac_cv_type_signal'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1961 "configure"
+#line 2126 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -1974,7 +2139,7 @@ int main() {
 int i;
 ; return 0; }
 EOF
-if { (eval echo configure:1978: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2143: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_type_signal=void
 else
@@ -1993,16 +2158,16 @@ EOF
 
 
 echo $ac_n "checking struct exception""... $ac_c" 1>&6
-echo "configure:1997: checking struct exception" >&5
+echo "configure:2162: checking struct exception" >&5
 cat > conftest.$ac_ext <<EOF
-#line 1999 "configure"
+#line 2164 "configure"
 #include "confdefs.h"
 #include <math.h>
 int main() {
 struct exception e;
 ; return 0; }
 EOF
-if { (eval echo configure:2006: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2171: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define HAVE_STRUCT_EXCEPTION 1
@@ -2016,7 +2181,7 @@ else
 fi
 rm -f conftest*
 echo $ac_n "checking for sin in -lm""... $ac_c" 1>&6
-echo "configure:2020: checking for sin in -lm" >&5
+echo "configure:2185: checking for sin in -lm" >&5
 ac_lib_var=`echo m'_'sin | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2024,7 +2189,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lm  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2028 "configure"
+#line 2193 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2035,7 +2200,7 @@ int main() {
 sin()
 ; return 0; }
 EOF
-if { (eval echo configure:2039: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2204: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2060,17 +2225,17 @@ for ac_hdr in unistd.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:2064: checking for $ac_hdr" >&5
+echo "configure:2229: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2069 "configure"
+#line 2234 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2074: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2239: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -2099,12 +2264,12 @@ done
 for ac_func in getpagesize
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2103: checking for $ac_func" >&5
+echo "configure:2268: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2108 "configure"
+#line 2273 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2127,7 +2292,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2131: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2296: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2152,7 +2317,7 @@ fi
 done
 
 echo $ac_n "checking for working mmap""... $ac_c" 1>&6
-echo "configure:2156: checking for working mmap" >&5
+echo "configure:2321: checking for working mmap" >&5
 if eval "test \"`echo '$''{'ac_cv_func_mmap_fixed_mapped'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2160,7 +2325,7 @@ else
   ac_cv_func_mmap_fixed_mapped=no
 else
   cat > conftest.$ac_ext <<EOF
-#line 2164 "configure"
+#line 2329 "configure"
 #include "confdefs.h"
 
 /* Thanks to Mike Haertel and Jim Avera for this test.
@@ -2300,7 +2465,7 @@ main()
 }
 
 EOF
-if { (eval echo configure:2304: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2469: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_mmap_fixed_mapped=yes
 else
@@ -2327,12 +2492,12 @@ LIBS="$LIBS -lc $LIBM"
 for ac_func in fmod strtol getcwd strerror putenv
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2331: checking for $ac_func" >&5
+echo "configure:2496: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2336 "configure"
+#line 2501 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2355,7 +2520,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2359: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2524: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2385,12 +2550,12 @@ LIBS="$saved_libs"
 for ac_func in rename mkstemp strcasecmp strncasecmp strsep strdup
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2389: checking for $ac_func" >&5
+echo "configure:2554: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2394 "configure"
+#line 2559 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2413,7 +2578,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2417: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2582: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -2438,12 +2603,12 @@ fi
 done
 
 echo $ac_n "checking for sys_siglist declaration in signal.h or unistd.h""... $ac_c" 1>&6
-echo "configure:2442: checking for sys_siglist declaration in signal.h or unistd.h" >&5
+echo "configure:2607: checking for sys_siglist declaration in signal.h or unistd.h" >&5
 if eval "test \"`echo '$''{'ac_cv_decl_sys_siglist'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2447 "configure"
+#line 2612 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <signal.h>
@@ -2455,7 +2620,7 @@ int main() {
 char *msg = *(sys_siglist + 1);
 ; return 0; }
 EOF
-if { (eval echo configure:2459: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2624: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_decl_sys_siglist=yes
 else
@@ -2484,16 +2649,16 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking whether ANSI array delete syntax supported""... $ac_c" 1>&6
-echo "configure:2488: checking whether ANSI array delete syntax supported" >&5
+echo "configure:2653: checking whether ANSI array delete syntax supported" >&5
 cat > conftest.$ac_ext <<EOF
-#line 2490 "configure"
+#line 2655 "configure"
 #include "confdefs.h"
 
 int main() {
 char *p = new char[5]; delete [] p;
 ; return 0; }
 EOF
-if { (eval echo configure:2497: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2662: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 else
@@ -2522,16 +2687,16 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 echo $ac_n "checking traditional preprocessor""... $ac_c" 1>&6
-echo "configure:2526: checking traditional preprocessor" >&5
+echo "configure:2691: checking traditional preprocessor" >&5
 cat > conftest.$ac_ext <<EOF
-#line 2528 "configure"
+#line 2693 "configure"
 #include "confdefs.h"
 #define name2(a,b) a/**/b
 int main() {
 int name2(foo,bar);
 ; return 0; }
 EOF
-if { (eval echo configure:2535: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2700: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define TRADITIONAL_CPP 1
@@ -2552,12 +2717,12 @@ ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$a
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking w_coredump""... $ac_c" 1>&6
-echo "configure:2556: checking w_coredump" >&5
+echo "configure:2721: checking w_coredump" >&5
 if test "$cross_compiling" = yes; then
   echo "$ac_t""no" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2561 "configure"
+#line 2726 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -2572,7 +2737,7 @@ main()
 #endif
 }
 EOF
-if { (eval echo configure:2576: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2741: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   echo "$ac_t""yes" 1>&6;cat >> confdefs.h <<\EOF
 #define WCOREFLAG 0200
@@ -2588,12 +2753,12 @@ rm -fr conftest*
 fi
 
 echo $ac_n "checking default value for grops -b option""... $ac_c" 1>&6
-echo "configure:2592: checking default value for grops -b option" >&5
+echo "configure:2757: checking default value for grops -b option" >&5
 test -n "${BROKEN_SPOOLER_FLAGS}" || BROKEN_SPOOLER_FLAGS=7
 echo "$ac_t""$BROKEN_SPOOLER_FLAGS" 1>&6
 
 echo $ac_n "checking default paper size""... $ac_c" 1>&6
-echo "configure:2597: checking default paper size" >&5
+echo "configure:2762: checking default paper size" >&5
 if test -z "$PAGE"; then
 	descfile=
 	if test -r $prefix/share/groff/font/devps/DESC; then
@@ -2628,7 +2793,7 @@ test -n "$PAGE" || PAGE=letter
 echo "$ac_t""$PAGE" 1>&6
 
 echo $ac_n "checking for existing troff installation""... $ac_c" 1>&6
-echo "configure:2632: checking for existing troff installation" >&5
+echo "configure:2797: checking for existing troff installation" >&5
 if test "x`(echo .tm '|n(.g' | tr '|' '\\\\' | troff -z -i 2>&1) 2>/dev/null`" = x0; then
 	echo "$ac_t""yes" 1>&6
 	g=g
@@ -2638,7 +2803,7 @@ else
 fi
 
 echo $ac_n "checking for prefix of system macro packages""... $ac_c" 1>&6
-echo "configure:2642: checking for prefix of system macro packages" >&5
+echo "configure:2807: checking for prefix of system macro packages" >&5
 sys_tmac_prefix=
 sys_tmac_file_prefix=
 for d in /usr/share/lib/tmac /usr/lib/tmac; do
@@ -2658,7 +2823,7 @@ echo "$ac_t""$sys_tmac_prefix" 1>&6
 
 tmac_wrap=
 echo $ac_n "checking which system macro packages should be made available""... $ac_c" 1>&6
-echo "configure:2662: checking which system macro packages should be made available" >&5
+echo "configure:2827: checking which system macro packages should be made available" >&5
 if test "x$sys_tmac_file_prefix" = "xtmac."; then
 	for f in $sys_tmac_prefix*; do
 		suff=`echo $f | sed -e "s;$sys_tmac_prefix;;"`