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Imported Upstream version 1.4.15

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This commit is contained in:
Jan Wagner 2013-11-26 23:57:29 +01:00
parent 882cdeecca
commit 047baae1ca
386 changed files with 60019 additions and 38317 deletions
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111
gl/m4/setenv.m4 Normal file
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# setenv.m4 serial 16
dnl Copyright (C) 2001-2004, 2006-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_SETENV],
[
AC_REQUIRE([gl_FUNC_SETENV_SEPARATE])
if test $HAVE_SETENV$REPLACE_SETENV != 10; then
AC_LIBOBJ([setenv])
fi
])
# Like gl_FUNC_SETENV, except prepare for separate compilation (no AC_LIBOBJ).
AC_DEFUN([gl_FUNC_SETENV_SEPARATE],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([setenv])
if test $ac_cv_func_setenv = no; then
HAVE_SETENV=0
else
AC_CACHE_CHECK([whether setenv validates arguments],
[gl_cv_func_setenv_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <stdlib.h>
#include <errno.h>
#include <string.h>
]], [[
if (setenv ("", "", 0) != -1) return 1;
if (errno != EINVAL) return 2;
if (setenv ("a", "=", 1) != 0) return 3;
if (strcmp (getenv ("a"), "=") != 0) return 4;
]])],
[gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no],
[gl_cv_func_setenv_works="guessing no"])])
if test "$gl_cv_func_setenv_works" != yes; then
REPLACE_SETENV=1
AC_LIBOBJ([setenv])
fi
fi
gl_PREREQ_SETENV
])
AC_DEFUN([gl_FUNC_UNSETENV],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
AC_CHECK_FUNCS([unsetenv])
if test $ac_cv_func_unsetenv = no; then
HAVE_UNSETENV=0
AC_LIBOBJ([unsetenv])
gl_PREREQ_UNSETENV
else
dnl Some BSDs return void, failing to do error checking.
AC_CACHE_CHECK([for unsetenv() return type], [gt_cv_func_unsetenv_ret],
[AC_TRY_COMPILE([#include <stdlib.h>
extern
#ifdef __cplusplus
"C"
#endif
#if defined(__STDC__) || defined(__cplusplus)
int unsetenv (const char *name);
#else
int unsetenv();
#endif
], , gt_cv_func_unsetenv_ret='int', gt_cv_func_unsetenv_ret='void')])
if test $gt_cv_func_unsetenv_ret = 'void'; then
AC_DEFINE([VOID_UNSETENV], [1], [Define to 1 if unsetenv returns void
instead of int.])
REPLACE_UNSETENV=1
AC_LIBOBJ([unsetenv])
fi
dnl Solaris 10 unsetenv does not remove all copies of a name.
AC_CACHE_CHECK([whether unsetenv works on duplicates],
[gl_cv_func_unsetenv_works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <stdlib.h>
]], [[
char entry[] = "b=2";
if (putenv ((char *) "a=1")) return 1;
if (putenv (entry)) return 2;
entry[0] = 'a';
unsetenv ("a");
if (getenv ("a")) return 3;
]])],
[gl_cv_func_unsetenv_works=yes], [gl_cv_func_unsetenv_works=no],
[gl_cv_func_unsetenv_works="guessing no"])])
if test "$gl_cv_func_unsetenv_works" != yes; then
REPLACE_UNSETENV=1
AC_LIBOBJ([unsetenv])
fi
fi
])
# Prerequisites of lib/setenv.c.
AC_DEFUN([gl_PREREQ_SETENV],
[
AC_REQUIRE([AC_FUNC_ALLOCA])
AC_REQUIRE([gl_ENVIRON])
AC_CHECK_HEADERS_ONCE([unistd.h])
AC_CHECK_HEADERS([search.h])
AC_CHECK_FUNCS([tsearch])
])
# Prerequisites of lib/unsetenv.c.
AC_DEFUN([gl_PREREQ_UNSETENV],
[
AC_REQUIRE([gl_ENVIRON])
AC_CHECK_HEADERS_ONCE([unistd.h])
])