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dnl Copyright (C) 2002 Free Software Foundation, Inc.
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dnl This file is free software, distributed under the terms of the GNU
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dnl General Public License. As a special exception to the GNU General
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dnl Public License, this file may be distributed as part of a program
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dnl that contains a configuration script generated by Autoconf, under
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dnl the same distribution terms as the rest of that program.
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dnl From Jim Meyering.
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dnl Determine whether malloc accepts 0 as its argument.
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dnl If it doesn't, arrange to use the replacement function.
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AC_DEFUN(jm_FUNC_MALLOC,
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AC_DEFUN([jm_FUNC_MALLOC],
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dnl xmalloc.c requires that this symbol be defined so it doesn't
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dnl mistakenly use a broken malloc -- as it might if this test were omitted.
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AC_DEFINE_UNQUOTED(HAVE_DONE_WORKING_MALLOC_CHECK, 1,
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[Define if the malloc check has been performed. ])
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AC_CACHE_CHECK([for working malloc], jm_cv_func_working_malloc,
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exit (malloc (0) ? 0 : 1);
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jm_cv_func_working_malloc=yes,
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jm_cv_func_working_malloc=no,
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dnl When crosscompiling, assume malloc is broken.
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jm_cv_func_working_malloc=no)
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if test $jm_cv_func_working_malloc = no; then
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LIBOBJS="$LIBOBJS malloc.$ac_objext"
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AC_DEFINE_UNQUOTED(malloc, rpl_malloc,
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[Define to rpl_malloc if the replacement function should be used.])
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AC_REQUIRE([AC_FUNC_MALLOC])
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dnl autoconf < 2.57 used the symbol ac_cv_func_malloc_works.
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if test X"$ac_cv_func_malloc_0_nonnull" = Xno || test X"$ac_cv_func_malloc_works" = Xno; then
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# Prerequisites of lib/malloc.c.
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AC_DEFUN([gl_PREREQ_MALLOC], [