diff options
Diffstat (limited to 'm4/malloc.m4')
| -rw-r--r-- | m4/malloc.m4 | 42 |
1 files changed, 16 insertions, 26 deletions
diff --git a/m4/malloc.m4 b/m4/malloc.m4 index cb5cff3..2452acf 100644 --- a/m4/malloc.m4 +++ b/m4/malloc.m4 @@ -1,35 +1,25 @@ -#serial 6 +# malloc.m4 serial 7 +dnl Copyright (C) 2002 Free Software Foundation, Inc. +dnl This file is free software, distributed under the terms of the GNU +dnl General Public License. As a special exception to the GNU General +dnl Public License, this file may be distributed as part of a program +dnl that contains a configuration script generated by Autoconf, under +dnl the same distribution terms as the rest of that program. dnl From Jim Meyering. dnl Determine whether malloc accepts 0 as its argument. dnl If it doesn't, arrange to use the replacement function. -dnl AC_DEFUN([jm_FUNC_MALLOC], [ - dnl xmalloc.c requires that this symbol be defined so it doesn't - dnl mistakenly use a broken malloc -- as it might if this test were omitted. - AC_DEFINE(HAVE_DONE_WORKING_MALLOC_CHECK, 1, - [Define if the malloc check has been performed. ]) - - AC_CACHE_CHECK([whether malloc(0) returns a non-NULL pointer], - jm_cv_func_working_malloc, - [AC_TRY_RUN([ - char *malloc (); - int - main () - { - exit (malloc (0) ? 0 : 1); - } - ], - jm_cv_func_working_malloc=yes, - jm_cv_func_working_malloc=no, - dnl When crosscompiling, assume malloc(0) returns NULL. - jm_cv_func_working_malloc=no) - ]) - if test $jm_cv_func_working_malloc = no; then - AC_LIBOBJ(malloc) - AC_DEFINE(malloc, rpl_malloc, - [Define to rpl_malloc if the replacement function should be used.]) + AC_REQUIRE([AC_FUNC_MALLOC]) + dnl autoconf < 2.57 used the symbol ac_cv_func_malloc_works. + if test X"$ac_cv_func_malloc_0_nonnull" = Xno || test X"$ac_cv_func_malloc_works" = Xno; then + gl_PREREQ_MALLOC fi ]) + +# Prerequisites of lib/malloc.c. +AC_DEFUN([gl_PREREQ_MALLOC], [ + : +]) |