2 dnl Copyright (C) 2020-2021 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 dnl Written by Bruno Haible.
9 AC_DEFUN([gl_MALLOC_H],
11 dnl Use AC_REQUIRE here, so that the default behavior below is expanded
12 dnl once only, before all statements that occur in other macros.
13 AC_REQUIRE([gl_MALLOC_H_DEFAULTS])
15 gl_CHECK_NEXT_HEADERS([malloc.h])
16 if test $ac_cv_header_malloc_h = yes; then
21 AC_SUBST([HAVE_MALLOC_H])
23 dnl Check for declarations of anything we want to poison if the
24 dnl corresponding gnulib module is not in use.
25 gl_WARN_ON_USE_PREPARE([[
32 AC_DEFUN([gl_MALLOC_MODULE_INDICATOR],
34 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
35 AC_REQUIRE([gl_MALLOC_H_DEFAULTS])
36 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
37 dnl Define it also as a C macro, for the benefit of the unit tests.
38 gl_MODULE_INDICATOR_FOR_TESTS([$1])
41 AC_DEFUN([gl_MALLOC_H_DEFAULTS],
43 GNULIB_MEMALIGN=0; AC_SUBST([GNULIB_MEMALIGN])
44 dnl Assume proper GNU behavior unless another module says otherwise.
45 HAVE_MEMALIGN=1; AC_SUBST([HAVE_MEMALIGN])
46 REPLACE_MEMALIGN=0; AC_SUBST([REPLACE_MEMALIGN])