Makefile.in (CFILES): Add putenv.c and setenv.c.

        * Makefile.in (CFILES): Add putenv.c and setenv.c.
        * configure.in (funcs): Add putenv and setenv.
        (AC_CHECK_FUNCS): Check for putenv and setenv.
        * configure: Rebuilt.
        * putenv.c setenv.c: New files.

[[Split portion of a mixed commit.]]

From-SVN: r27162.2

5 files changed, 302 insertions, 73 deletions

diff --git a/libiberty/Makefile.in b/libiberty/Makefile.in
index 622b92c..6aaac7f 100644
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -120,9 +120,9 @@ CFILES = asprintf.c alloca.c argv.c atexit.c basename.c bcmp.c bcopy.c \
 	fnmatch.c getcwd.c getopt.c getopt1.c getpagesize.c \
 	getruntime.c floatformat.c hex.c index.c insque.c memchr.c \
 	memcmp.c memcpy.c memmove.c memset.c mkstemps.c objalloc.c obstack.c \
-	pexecute.c random.c rename.c rindex.c sigsetmask.c spaces.c \
-	splay-tree.c strcasecmp.c strncasecmp.c strchr.c strdup.c strerror.c \
-	strrchr.c strsignal.c strstr.c strtod.c strtol.c strtoul.c \
+	pexecute.c putenv.c random.c rename.c rindex.c setenv.c sigsetmask.c \
+	spaces.c splay-tree.c strcasecmp.c strncasecmp.c strchr.c strdup.c \
+	strerror.c strrchr.c strsignal.c strstr.c strtod.c strtol.c strtoul.c \
 	tmpnam.c vasprintf.c vfork.c vfprintf.c vprintf.c vsprintf.c \
 	waitpid.c xatexit.c xexit.c xmalloc.c xstrdup.c xstrerror.c
 
diff --git a/libiberty/configure b/libiberty/configure
index c4ffbd0..fe898a5 100755
--- a/libiberty/configure
+++ b/libiberty/configure
@@ -1159,9 +1159,11 @@ funcs="$funcs memcpy"
 funcs="$funcs memmove"
 funcs="$funcs memset"
 funcs="$funcs mkstemps"
+funcs="$funcs putenv"
 funcs="$funcs random"
 funcs="$funcs rename"
 funcs="$funcs rindex"
+funcs="$funcs setenv"
 funcs="$funcs sigsetmask"
 funcs="$funcs strcasecmp"
 funcs="$funcs strchr"
@@ -1191,12 +1193,12 @@ if test "x" = "y"; then
   for ac_func in asprintf atexit basename bcmp bcopy bzero calloc clock getcwd
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1195: checking for $ac_func" >&5
+echo "configure:1197: 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 1200 "configure"
+#line 1202 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1219,7 +1221,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1223: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1225: \"$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
@@ -1246,12 +1248,12 @@ done
   for ac_func in getpagesize index insque mkstemps memchr memcmp memcpy memmove
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1250: checking for $ac_func" >&5
+echo "configure:1252: 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 1255 "configure"
+#line 1257 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1274,7 +1276,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1278: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1280: \"$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
@@ -1298,15 +1300,15 @@ else
 fi
 done
 
-  for ac_func in memset random rename rindex sigsetmask strcasecmp
+  for ac_func in memset putenv random rename rindex sigsetmask strcasecmp
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1305: checking for $ac_func" >&5
+echo "configure:1307: 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 1310 "configure"
+#line 1312 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1329,7 +1331,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1333: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1335: \"$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
@@ -1353,15 +1355,15 @@ else
 fi
 done
 
-  for ac_func in strchr strdup strncasecmp strrchr strstr strtod strtol
+  for ac_func in setenv strchr strdup strncasecmp strrchr strstr strtod strtol
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1360: checking for $ac_func" >&5
+echo "configure:1362: 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 1365 "configure"
+#line 1367 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1384,7 +1386,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1388: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1390: \"$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
@@ -1411,12 +1413,12 @@ done
   for ac_func in strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1415: checking for $ac_func" >&5
+echo "configure:1417: 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 1420 "configure"
+#line 1422 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1439,7 +1441,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1443: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1445: \"$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
@@ -1478,12 +1480,12 @@ EOF
   for ac_func in getrusage on_exit psignal strerror strsignal sysconf times
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1482: checking for $ac_func" >&5
+echo "configure:1484: 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 1487 "configure"
+#line 1489 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1506,7 +1508,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1510: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1512: \"$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
@@ -1533,12 +1535,12 @@ done
   for ac_func in sbrk
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1537: checking for $ac_func" >&5
+echo "configure:1539: 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 1542 "configure"
+#line 1544 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1561,7 +1563,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1565: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1567: \"$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
@@ -1732,7 +1734,7 @@ EOF
   # We haven't set the list of objects yet.  Use the standard autoconf
   # tests.  This will only work if the compiler works.
   echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1736: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1738: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1743,12 +1745,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1747 "configure"
+#line 1749 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:1752: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1754: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1774,19 +1776,19 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1778: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1780: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
   for ac_func in $funcs
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1785: checking for $ac_func" >&5
+echo "configure:1787: 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 1790 "configure"
+#line 1792 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -1809,7 +1811,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:1813: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1815: \"$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
@@ -1856,19 +1858,19 @@ EOF
     # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
-echo "configure:1860: checking for working alloca.h" >&5
+echo "configure:1862: checking for working alloca.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1865 "configure"
+#line 1867 "configure"
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
 char *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
-if { (eval echo configure:1872: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1874: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_header_alloca_h=yes
 else
@@ -1889,12 +1891,12 @@ EOF
 fi
 
 echo $ac_n "checking for alloca""... $ac_c" 1>&6
-echo "configure:1893: checking for alloca" >&5
+echo "configure:1895: checking for alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1898 "configure"
+#line 1900 "configure"
 #include "confdefs.h"
 
 #ifdef __GNUC__
@@ -1922,7 +1924,7 @@ int main() {
 char *p = (char *) alloca(1);
 ; return 0; }
 EOF
-if { (eval echo configure:1926: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1928: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   ac_cv_func_alloca_works=yes
 else
@@ -1954,12 +1956,12 @@ EOF
 
 
 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
-echo "configure:1958: checking whether alloca needs Cray hooks" >&5
+echo "configure:1960: checking whether alloca needs Cray hooks" >&5
 if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1963 "configure"
+#line 1965 "configure"
 #include "confdefs.h"
 #if defined(CRAY) && ! defined(CRAY2)
 webecray
@@ -1984,12 +1986,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
 if test $ac_cv_os_cray = yes; then
 for ac_func in _getb67 GETB67 getb67; do
   echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:1988: checking for $ac_func" >&5
+echo "configure:1990: 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 1993 "configure"
+#line 1995 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2012,7 +2014,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2016: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2018: \"$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
@@ -2039,7 +2041,7 @@ done
 fi
 
 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
-echo "configure:2043: checking stack direction for C alloca" >&5
+echo "configure:2045: checking stack direction for C alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2047,7 +2049,7 @@ else
   ac_cv_c_stack_direction=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 2051 "configure"
+#line 2053 "configure"
 #include "confdefs.h"
 find_stack_direction ()
 {
@@ -2066,7 +2068,7 @@ main ()
   exit (find_stack_direction() < 0);
 }
 EOF
-if { (eval echo configure:2070: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2072: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_stack_direction=1
 else
@@ -2091,12 +2093,12 @@ fi
   esac
 
   echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:2095: checking for ANSI C header files" >&5
+echo "configure:2097: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2100 "configure"
+#line 2102 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -2104,7 +2106,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2108: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2110: \"$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*
@@ -2121,7 +2123,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2125 "configure"
+#line 2127 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -2139,7 +2141,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 2143 "configure"
+#line 2145 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -2160,7 +2162,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 2164 "configure"
+#line 2166 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -2171,7 +2173,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:2175: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2177: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -2195,12 +2197,12 @@ EOF
 fi
 
 echo $ac_n "checking for pid_t""... $ac_c" 1>&6
-echo "configure:2199: checking for pid_t" >&5
+echo "configure:2201: checking for pid_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_pid_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2204 "configure"
+#line 2206 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -2229,17 +2231,17 @@ fi
 
 ac_safe=`echo "vfork.h" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for vfork.h""... $ac_c" 1>&6
-echo "configure:2233: checking for vfork.h" >&5
+echo "configure:2235: checking for vfork.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2238 "configure"
+#line 2240 "configure"
 #include "confdefs.h"
 #include <vfork.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:2243: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:2245: \"$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*
@@ -2264,18 +2266,18 @@ else
 fi
 
 echo $ac_n "checking for working vfork""... $ac_c" 1>&6
-echo "configure:2268: checking for working vfork" >&5
+echo "configure:2270: checking for working vfork" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vfork_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   if test "$cross_compiling" = yes; then
   echo $ac_n "checking for vfork""... $ac_c" 1>&6
-echo "configure:2274: checking for vfork" >&5
+echo "configure:2276: checking for vfork" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vfork'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2279 "configure"
+#line 2281 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char vfork(); below.  */
@@ -2298,7 +2300,7 @@ vfork();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2302: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2304: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_vfork=yes"
 else
@@ -2320,7 +2322,7 @@ fi
 ac_cv_func_vfork_works=$ac_cv_func_vfork
 else
   cat > conftest.$ac_ext <<EOF
-#line 2324 "configure"
+#line 2326 "configure"
 #include "confdefs.h"
 /* Thanks to Paul Eggert for this test.  */
 #include <stdio.h>
@@ -2415,7 +2417,7 @@ main() {
   }
 }
 EOF
-if { (eval echo configure:2419: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:2421: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_func_vfork_works=yes
 else
@@ -2442,19 +2444,19 @@ fi
   fi
   for v in $vars; do
     echo $ac_n "checking for $v""... $ac_c" 1>&6
-echo "configure:2446: checking for $v" >&5
+echo "configure:2448: checking for $v" >&5
     if eval "test \"`echo '$''{'libiberty_cv_var_$v'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2451 "configure"
+#line 2453 "configure"
 #include "confdefs.h"
 int *p;
 int main() {
 extern int $v; p = &$v;
 ; return 0; }
 EOF
-if { (eval echo configure:2458: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2460: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "libiberty_cv_var_$v=yes"
 else
@@ -2480,12 +2482,12 @@ EOF
   for ac_func in $checkfuncs
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:2484: checking for $ac_func" >&5
+echo "configure:2486: 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 2489 "configure"
+#line 2491 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -2508,7 +2510,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2512: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2514: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
diff --git a/libiberty/configure.in b/libiberty/configure.in
index 3fcfe9d..f194e26 100644
--- a/libiberty/configure.in
+++ b/libiberty/configure.in
@@ -130,9 +130,11 @@ funcs="$funcs memcpy"
 funcs="$funcs memmove"
 funcs="$funcs memset"
 funcs="$funcs mkstemps"
+funcs="$funcs putenv"
 funcs="$funcs random"
 funcs="$funcs rename"
 funcs="$funcs rindex"
+funcs="$funcs setenv"
 funcs="$funcs sigsetmask"
 funcs="$funcs strcasecmp"
 funcs="$funcs strchr"
@@ -161,8 +163,8 @@ checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk"
 if test "x" = "y"; then
   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero calloc clock getcwd)
   AC_CHECK_FUNCS(getpagesize index insque mkstemps memchr memcmp memcpy memmove)
-  AC_CHECK_FUNCS(memset random rename rindex sigsetmask strcasecmp)
-  AC_CHECK_FUNCS(strchr strdup strncasecmp strrchr strstr strtod strtol)
+  AC_CHECK_FUNCS(memset putenv random rename rindex sigsetmask strcasecmp)
+  AC_CHECK_FUNCS(setenv strchr strdup strncasecmp strrchr strstr strtod strtol)
   AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
   AC_DEFINE(HAVE_SYS_ERRLIST)
   AC_DEFINE(HAVE_SYS_NERR)
diff --git a/libiberty/putenv.c b/libiberty/putenv.c
new file mode 100644
index 0000000..1860676
--- /dev/null
+++ b/libiberty/putenv.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc.
+   This file based on putenv.c in the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if defined (_AIX) && !defined (__GNUC__)
+ #pragma alloca
+#endif
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#if HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#else
+# ifndef alloca
+#  ifdef __GNUC__
+#   define alloca __builtin_alloca
+#  else
+extern char *alloca ();
+#  endif /* __GNUC__ */
+# endif /* alloca */
+#endif /* HAVE_ALLOCA_H */
+
+/* Below this point, it's verbatim code from the glibc-2.0 implementation */
+
+
+/* Put STRING, which is of the form "NAME=VALUE", in the environment.  */
+int
+putenv (string)
+     const char *string;
+{
+  const char *const name_end = strchr (string, '=');
+
+  if (name_end)
+    {
+      char *name = alloca (name_end - string + 1);
+      memcpy (name, string, name_end - string);
+      name[name_end - string] = '\0';
+      return setenv (name, name_end + 1, 1);
+    }
+
+  unsetenv (string);
+  return 0;
+}
diff --git a/libiberty/setenv.c b/libiberty/setenv.c
new file mode 100644
index 0000000..0ecc2ca
--- /dev/null
+++ b/libiberty/setenv.c
@@ -0,0 +1,159 @@
+/* Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file based on setenv.c in the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <errno.h>
+#if !defined(errno) && !defined(HAVE_ERRNO_DECL)
+extern int errno;
+#endif
+#define __set_errno(ev) ((errno) = (ev))
+
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#if HAVE_STRING_H
+# include <string.h>
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#define __environ	environ
+#ifndef HAVE_ENVIRON_DECL
+extern char **environ;
+#endif
+
+/* LOCK and UNLOCK are defined as no-ops.  This makes the libiberty
+ * implementation MT-Unsafe. */
+#define LOCK
+#define UNLOCK
+
+/* Below this point, it's verbatim code from the glibc-2.0 implementation */
+
+/* If this variable is not a null pointer we allocated the current
+   environment.  */
+static char **last_environ;
+
+
+int
+setenv (name, value, replace)
+     const char *name;
+     const char *value;
+     int replace;
+{
+  register char **ep;
+  register size_t size;
+  const size_t namelen = strlen (name);
+  const size_t vallen = strlen (value) + 1;
+
+  LOCK;
+
+  size = 0;
+  if (__environ != NULL)
+    for (ep = __environ; *ep != NULL; ++ep)
+      if (!strncmp (*ep, name, namelen) && (*ep)[namelen] == '=')
+	break;
+      else
+	++size;
+
+  if (__environ == NULL || *ep == NULL)
+    {
+      char **new_environ;
+      if (__environ == last_environ && __environ != NULL)
+	/* We allocated this space; we can extend it.  */
+	new_environ = (char **) realloc (last_environ,
+					 (size + 2) * sizeof (char *));
+      else
+	new_environ = (char **) malloc ((size + 2) * sizeof (char *));
+
+      if (new_environ == NULL)
+	{
+	  UNLOCK;
+	  return -1;
+	}
+
+      new_environ[size] = malloc (namelen + 1 + vallen);
+      if (new_environ[size] == NULL)
+	{
+	  free ((char *) new_environ);
+	  __set_errno (ENOMEM);
+	  UNLOCK;
+	  return -1;
+	}
+
+      if (__environ != last_environ)
+	memcpy ((char *) new_environ, (char *) __environ,
+		size * sizeof (char *));
+
+      memcpy (new_environ[size], name, namelen);
+      new_environ[size][namelen] = '=';
+      memcpy (&new_environ[size][namelen + 1], value, vallen);
+
+      new_environ[size + 1] = NULL;
+
+      last_environ = __environ = new_environ;
+    }
+  else if (replace)
+    {
+      size_t len = strlen (*ep);
+      if (len + 1 < namelen + 1 + vallen)
+	{
+	  /* The existing string is too short; malloc a new one.  */
+	  char *new = malloc (namelen + 1 + vallen);
+	  if (new == NULL)
+	    {
+	      UNLOCK;
+	      return -1;
+	    }
+	  *ep = new;
+	}
+      memcpy (*ep, name, namelen);
+      (*ep)[namelen] = '=';
+      memcpy (&(*ep)[namelen + 1], value, vallen);
+    }
+
+  UNLOCK;
+
+  return 0;
+}
+
+void
+unsetenv (name)
+     const char *name;
+{
+  const size_t len = strlen (name);
+  char **ep;
+
+  LOCK;
+
+  for (ep = __environ; *ep; ++ep)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+	/* Found it.  Remove this pointer by moving later ones back.  */
+	char **dp = ep;
+	do
+	  dp[0] = dp[1];
+	while (*dp++);
+	/* Continue the loop in case NAME appears again.  */
+      }
+
+  UNLOCK;
+}