117 строки
4.6 KiB
Bash
117 строки
4.6 KiB
Bash
# -*- shell-script -*-
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#
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# Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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# University Research and Technology
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# Corporation. All rights reserved.
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# Copyright (c) 2004-2005 The University of Tennessee and The University
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# of Tennessee Research Foundation. All rights
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# reserved.
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# Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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# University of Stuttgart. All rights reserved.
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# Copyright (c) 2004-2005 The Regents of the University of California.
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# All rights reserved.
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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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AC_DEFUN([OMPI_CHECK____ATTRIBUTE__], [
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AC_MSG_CHECKING(for __attribute__)
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AC_CACHE_VAL(ac_cv___attribute__, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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static void foo(void) __attribute__ ((unused));
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static void foo(void) { exit(1); }],
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[],
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[ac_cv___attribute__=1 ac_cv___attribute__msg=yes],
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[ac_cv___attribute__=0 ac_cv___attribute__msg=no],
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)])
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE, [$ac_cv___attribute__],
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[Whether your compiler has __attribute__ or not])
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AC_MSG_RESULT($ac_cv___attribute__msg)
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#
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# Now that we know the compiler support __attribute__ let's check which kind of
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# attributed are supported.
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#
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if test "$ac_cv___attribute__msg" = "no"; then
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ac_cv___attribute__alias=0
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ac_cv___attribute__const=0
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ac_cv___attribute__malloc=0
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ac_cv___attribute__noreturn=0
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ac_cv___attribute__pure=0
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else
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AC_MSG_CHECKING("for __attribute__ ((alias))" )
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AC_CACHE_VAL(ac_cv___attribute__alias, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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int foo(int arg) { return arg + 3; }
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int foo2(int) __attribute__ ((weak, alias ("foo")));],
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[],
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[ac_cv___attribute__alias=1 ac_cv___attribute__alias_msg=yes],
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[ac_cv___attribute__alias=0 ac_cv___attribute__alias_msg=no]
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)])
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AC_MSG_RESULT($ac_cv___attribute__alias_msg)
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AC_MSG_CHECKING("for __attribute__ ((const))" )
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AC_CACHE_VAL(ac_cv___attribute__const, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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int foo(int arg1, int arg2) __attribute__ ((const)) { return arg1 * arg2 + arg1; }],
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[],
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[ac_cv___attribute__const=1 ac_cv___attribute__const_msg=yes],
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[ac_cv___attribute__const=0 ac_cv___attribute__const_msg=no]
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)])
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AC_MSG_RESULT($ac_cv___attribute__const_msg)
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AC_MSG_CHECKING("for __attribute__ ((malloc))" )
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AC_CACHE_VAL(ac_cv___attribute__malloc, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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int foo(int arg1) __attribute__ ((malloc)) { return malloc(arg1); }],
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[],
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[ac_cv___attribute__malloc=1 ac_cv___attribute__malloc_msg=yes],
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[ac_cv___attribute__malloc=0 ac_cv___attribute__malloc_msg=no]
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)])
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AC_MSG_RESULT($ac_cv___attribute__malloc_msg)
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AC_MSG_CHECKING("for __attribute__ ((noreturn))" )
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AC_CACHE_VAL(ac_cv___attribute__noreturn, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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int fatal(int arg1) __attribute__ ((noreturn)) { exit(arg1); }],
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[],
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[ac_cv___attribute__noreturn=1 ac_cv___attribute__noreturn_msg=yes],
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[ac_cv___attribute__noreturn=0 ac_cv___attribute__noreturn_msg=no]
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)])
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AC_MSG_RESULT($ac_cv___attribute__noreturn_msg)
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AC_MSG_CHECKING("for __attribute__ ((pure))" )
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AC_CACHE_VAL(ac_cv___attribute__pure, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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int square(int arg) __attribute__ ((pure)) { return arg * arg; }],
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[],
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[ac_cv___attribute__pure=1 ac_cv___attribute__pure_msg=yes],
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[ac_cv___attribute__pure=0 ac_cv___attribute__pure_msg=no]
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)])
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AC_MSG_RESULT($ac_cv___attribute__pure_msg)
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fi
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# Now that all the values are set, define them
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE_WEAK_ALIAS, [$ac_cv___attribute__alias],
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[Whether your compiler has __attribute__ alias weak or not])
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE_CONST, [$ac_cv___attribute__const],
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[Whether your compiler has __attribute__ const or not])
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE_MALLOC, [$ac_cv___attribute__malloc],
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[Whether your compiler has __attribute__ malloc or not])
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE_NORETURN, [$ac_cv___attribute__noreturn],
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[Whether your compiler has __attribute__ noreturn or not])
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AC_DEFINE_UNQUOTED(OMPI_HAVE_ATTRIBUTE_PURE, [$ac_cv___attribute__pure],
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[Whether your compiler has __attribute__ pure or not])
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])
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