Check for setenv and unsetenv.

configure

@@ -3276,6 +3276,108 @@ if test "$GCC" = yes; then
 	CFLAGS="$CFLAGS -Wall -Wstrict-prototypes"
 fi
 
+
+
+for ac_func in setenv unsetenv
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
           ac_config_files="$ac_config_files src/Makefile"
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure

configure.in

@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-dnl $Id: configure.in,v 1.9 2005-09-30 03:33:52 dfs Exp $
+dnl $Id: configure.in,v 1.10 2007-07-09 01:55:45 dfs Exp $
 
 AC_INIT(src/queue.c)
 
@@ -40,4 +40,5 @@ if test "$GCC" = yes; then
 	CFLAGS="$CFLAGS -Wall -Wstrict-prototypes"
 fi
 
+AC_CHECK_FUNCS(setenv unsetenv)
 AC_OUTPUT(src/Makefile)

src/config.h.in

@@ -1,13 +1,10 @@
 /* src/config.h.in.  Generated automatically from configure.in by autoheader.  */
 
-/* $Id: config.h.in,v 1.5 2005-09-30 03:29:32 dfs Exp $ */
+/* $Id: config.h.in,v 1.6 2007-07-09 01:55:47 dfs Exp $ */
 
 /* Define if utime(file, NULL) sets file's timestamp to the present.  */
 #undef HAVE_UTIME_NULL
 
-/* Define if you have the vprintf function.  */
-#undef HAVE_VPRINTF
-
 /* Define if you can safely include both <sys/time.h> and <time.h>.  */
 #undef TIME_WITH_SYS_TIME
 
@@ -17,4 +14,8 @@
 /* Define if you have the <sys/file.h> header file.  */
 #undef HAVE_SYS_FILE_H
 
+#undef HAVE_SETENV
+
+#undef HAVE_UNSETENV
+
 #include "custom.h"