diff options
Diffstat (limited to 'm4/setenv.m4')
| -rw-r--r-- | m4/setenv.m4 | 77 |
1 files changed, 44 insertions, 33 deletions
diff --git a/m4/setenv.m4 b/m4/setenv.m4 index ba619b0..cb5351a 100644 --- a/m4/setenv.m4 +++ b/m4/setenv.m4 @@ -1,5 +1,5 @@ -# setenv.m4 serial 21 -dnl Copyright (C) 2001-2004, 2006-2011 Free Software Foundation, Inc. +# setenv.m4 serial 26 +dnl Copyright (C) 2001-2004, 2006-2013 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. @@ -7,20 +7,7 @@ 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_DECLS_ONCE([setenv]) - if test $ac_cv_have_decl_setenv = no; then - HAVE_DECL_SETENV=0 - fi - AC_CHECK_FUNCS_ONCE([setenv]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles if test $ac_cv_func_setenv = no; then HAVE_SETENV=0 else @@ -47,27 +34,48 @@ AC_DEFUN([gl_FUNC_SETENV_SEPARATE], return result; ]])], [gl_cv_func_setenv_works=yes], [gl_cv_func_setenv_works=no], - [gl_cv_func_setenv_works="guessing no"])]) - if test "$gl_cv_func_setenv_works" != yes; then - REPLACE_SETENV=1 - AC_LIBOBJ([setenv]) - fi + [case "$host_os" in + # Guess yes on glibc systems. + *-gnu*) gl_cv_func_setenv_works="guessing yes" ;; + # If we don't know, assume the worst. + *) gl_cv_func_setenv_works="guessing no" ;; + esac + ])]) + case "$gl_cv_func_setenv_works" in + *yes) ;; + *) + REPLACE_SETENV=1 + ;; + esac fi +]) + +# Like gl_FUNC_SETENV, except prepare for separate compilation +# (no REPLACE_SETENV, no AC_LIBOBJ). +AC_DEFUN([gl_FUNC_SETENV_SEPARATE], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_CHECK_DECLS_ONCE([setenv]) + if test $ac_cv_have_decl_setenv = no; then + HAVE_DECL_SETENV=0 + fi + AC_CHECK_FUNCS_ONCE([setenv]) gl_PREREQ_SETENV ]) AC_DEFUN([gl_FUNC_UNSETENV], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_DECLS_ONCE([unsetenv]) if test $ac_cv_have_decl_unsetenv = no; then HAVE_DECL_UNSETENV=0 fi AC_CHECK_FUNCS([unsetenv]) if test $ac_cv_func_unsetenv = no; then - AC_LIBOBJ([unsetenv]) - gl_PREREQ_UNSETENV + HAVE_UNSETENV=0 else + HAVE_UNSETENV=1 dnl Some BSDs return void, failing to do error checking. AC_CACHE_CHECK([for unsetenv() return type], [gt_cv_func_unsetenv_ret], [AC_COMPILE_IFELSE( @@ -80,11 +88,7 @@ extern #ifdef __cplusplus "C" #endif -#if defined(__STDC__) || defined(__cplusplus) int unsetenv (const char *name); -#else -int unsetenv(); -#endif ]], [[]])], [gt_cv_func_unsetenv_ret='int'], @@ -93,7 +97,6 @@ int unsetenv(); AC_DEFINE([VOID_UNSETENV], [1], [Define to 1 if unsetenv returns void instead of int.]) REPLACE_UNSETENV=1 - AC_LIBOBJ([unsetenv]) fi dnl Solaris 10 unsetenv does not remove all copies of a name. @@ -123,11 +126,19 @@ int unsetenv(); if (getenv ("a")) return 6; ]])], [gl_cv_func_unsetenv_works=yes], [gl_cv_func_unsetenv_works=no], - [gl_cv_func_unsetenv_works="guessing no"])]) - if test "$gl_cv_func_unsetenv_works" != yes; then - REPLACE_UNSETENV=1 - AC_LIBOBJ([unsetenv]) - fi + [case "$host_os" in + # Guess yes on glibc systems. + *-gnu*) gl_cv_func_unsetenv_works="guessing yes" ;; + # If we don't know, assume the worst. + *) gl_cv_func_unsetenv_works="guessing no" ;; + esac + ])]) + case "$gl_cv_func_unsetenv_works" in + *yes) ;; + *) + REPLACE_UNSETENV=1 + ;; + esac fi ]) |