52 lines
1.6 KiB
Plaintext
52 lines
1.6 KiB
Plaintext
dnl This Source Code Form is subject to the terms of the Mozilla Public
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dnl License, v. 2.0. If a copy of the MPL was not distributed with this
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dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.
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dnl Check for the existence of various allocation headers/functions
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AC_DEFUN([MOZ_CHECK_ALLOCATOR],[
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MALLOC_HEADERS="malloc.h malloc_np.h malloc/malloc.h sys/malloc.h"
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MALLOC_H=
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for file in $MALLOC_HEADERS; do
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MOZ_CHECK_HEADER($file, [MALLOC_H=$file])
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if test "$MALLOC_H" != ""; then
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AC_DEFINE_UNQUOTED(MALLOC_H, <$MALLOC_H>)
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break
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fi
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done
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AC_CHECK_FUNCS(strndup posix_memalign memalign)
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AC_CHECK_FUNCS(malloc_usable_size)
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MALLOC_USABLE_SIZE_CONST_PTR=const
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if test -n "$HAVE_MALLOC_H"; then
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AC_MSG_CHECKING([whether malloc_usable_size definition can use const argument])
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AC_TRY_COMPILE([#include <malloc.h>
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#include <stddef.h>
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size_t malloc_usable_size(const void *ptr);],
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[return malloc_usable_size(0);],
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no])
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MALLOC_USABLE_SIZE_CONST_PTR=)
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fi
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AC_DEFINE_UNQUOTED([MALLOC_USABLE_SIZE_CONST_PTR],[$MALLOC_USABLE_SIZE_CONST_PTR])
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dnl In newer bionic headers, valloc is built but not defined,
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dnl so we check more carefully here.
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AC_MSG_CHECKING([for valloc in malloc.h])
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AC_EGREP_HEADER(valloc, malloc.h,
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AC_DEFINE(HAVE_VALLOC)
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no]))
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AC_MSG_CHECKING([for valloc in unistd.h])
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AC_EGREP_HEADER(valloc, unistd.h,
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AC_DEFINE(HAVE_VALLOC)
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no]))
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])
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