1 files changed, 84 insertions, 0 deletions
diff --git a/gcc-4.7/libiberty/putenv.c b/gcc-4.7/libiberty/putenv.c
new file mode 100644
index 000000000..248f50e92
--- /dev/null
+++ b/gcc-4.7/libiberty/putenv.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 1991, 1994, 1995, 1996, 2002 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., 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/*
+
+@deftypefn Supplemental int putenv (const char *@var{string})
+
+Uses @code{setenv} or @code{unsetenv} to put @var{string} into
+the environment or remove it.  If @var{string} is of the form
+@samp{name=value} the string is added; if no @samp{=} is present the
+name is unset/removed.
+
+@end deftypefn
+
+*/
+
+#if defined (_AIX) && !defined (__GNUC__)
+ #pragma alloca
+#endif
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "ansidecl.h"
+
+#define putenv libiberty_putenv
+
+#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 */
+
+#undef putenv
+
+/* 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 (const char *string)
+{
+  const char *const name_end = strchr (string, '=');
+
+  if (name_end)
+    {
+      char *name = (char *) 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;
+}