35 lines
1.1 KiB
Text
35 lines
1.1 KiB
Text
# reallocarray.m4
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# serial 7
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dnl Copyright (C) 2017-2025 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_FUNC_REALLOCARRAY],
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[
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dnl Persuade glibc <stdlib.h> to declare reallocarray.
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
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AC_REQUIRE([gl_CHECK_MALLOC_PTRDIFF])
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AC_REQUIRE([gl_FUNC_REALLOC_0_NONNULL])
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gl_CHECK_FUNCS_ANDROID([reallocarray], [[#include <stdlib.h>]])
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if test "$ac_cv_func_reallocarray" = no; then
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HAVE_REALLOCARRAY=0
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case "$gl_cv_onwards_func_reallocarray" in
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future*) REPLACE_REALLOCARRAY=1 ;;
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esac
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else
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if test "$gl_cv_malloc_ptrdiff" = no; then
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REPLACE_REALLOCARRAY=1
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fi
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case "$gl_cv_func_realloc_0_nonnull" in
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*yes) ;;
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*) REPLACE_REALLOCARRAY=1 ;;
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esac
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fi
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])
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# Prerequisites of lib/reallocarray.c.
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AC_DEFUN([gl_PREREQ_REALLOCARRAY], [:])
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