diff options
Diffstat (limited to 'gl/m4/unistd_h.m4')
| -rw-r--r-- | gl/m4/unistd_h.m4 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/gl/m4/unistd_h.m4 b/gl/m4/unistd_h.m4 index f3074ea..aacec2b 100644 --- a/gl/m4/unistd_h.m4 +++ b/gl/m4/unistd_h.m4 @@ -1,4 +1,4 @@ -# unistd_h.m4 serial 37 +# unistd_h.m4 serial 38 dnl Copyright (C) 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, @@ -11,6 +11,7 @@ AC_DEFUN([gl_UNISTD_H], dnl Use AC_REQUIRE here, so that the default behavior below is expanded dnl once only, before all statements that occur in other macros. AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) + AC_REQUIRE([AC_C_INLINE]) gl_CHECK_NEXT_HEADERS([unistd.h]) @@ -21,6 +22,15 @@ AC_DEFUN([gl_UNISTD_H], HAVE_UNISTD_H=0 fi AC_SUBST([HAVE_UNISTD_H]) + + dnl Check for declarations of anything we want to poison if the + dnl corresponding gnulib module is not in use. + gl_WARN_ON_USE_PREPARE([[#include <unistd.h> +/* Some systems declare environ in the wrong header. */ +#ifndef __GLIBC__ +# include <stdlib.h> +#endif + ]], [environ]) ]) AC_DEFUN([gl_UNISTD_MODULE_INDICATOR], |