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| author | Andreas Rottmann <a.rottmann@gmx.at> | 2009-09-14 12:32:44 +0200 |
|---|---|---|
| committer | Andreas Rottmann <a.rottmann@gmx.at> | 2009-09-14 12:32:44 +0200 |
| commit | fa095a4504cbe668e4244547e2c141597bea4ecf (patch) | |
| tree | 06135820a286ffec47804e75fbf8a147e92acd2e /gnulib-m4/setenv.m4 | |
Imported Upstream version 0.9.1upstream/0.9.1
Diffstat (limited to 'gnulib-m4/setenv.m4')
| -rw-r--r-- | gnulib-m4/setenv.m4 | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/gnulib-m4/setenv.m4 b/gnulib-m4/setenv.m4 new file mode 100644 index 00000000..e28407ee --- /dev/null +++ b/gnulib-m4/setenv.m4 @@ -0,0 +1,71 @@ +# setenv.m4 serial 11 +dnl Copyright (C) 2001-2004, 2006-2009 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_STDLIB_H_DEFAULTS]) + AC_CHECK_FUNCS_ONCE([setenv]) + if test $ac_cv_func_setenv = no; then + HAVE_SETENV=0 + AC_LIBOBJ([setenv]) + gl_PREREQ_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 + 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 + 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 + VOID_UNSETENV=1 + 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]) +]) |