4abcf5a0d7
assigned to function-declarations. Check this case and mark the currently only case existing in trunk. Thanks to Paul Hargrove for bringing this up. Let's test the svn commit msg CMR:v1.5 This commit was SVN r23676.
585 строки
21 KiB
Bash
585 строки
21 KiB
Bash
# -*- shell-script -*-
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#
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# Copyright (c) 2004-2007 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) 2004-2010 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 (c) 2009 Oak Ridge National Labs. All rights reserved.
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# Copyright (c) 2010 Cisco Systems, Inc. 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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#
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# Search the generated warnings for
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# keywords regarding skipping or ignoring certain attributes
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# Intel: ignore
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# Sun C++: skip
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#
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AC_DEFUN([_OPAL_ATTRIBUTE_FAIL_SEARCH],[
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AC_REQUIRE([AC_PROG_GREP])
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if test -s conftest.err ; then
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# icc uses 'invalid attribute' and 'attribute "__XXX__" ignored'
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# Sun 12.1 emits 'warning: attribute parameter "__printf__" is undefined'
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for i in invalid ignore skip undefined ; do
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$GREP -iq $i conftest.err
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if test "$?" = "0" ; then
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opal_cv___attribute__[$1]=0
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break;
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fi
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done
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fi
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])
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#
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# Check for one specific attribute by compiling with C and C++
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# and possibly using a cross-check.
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#
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# If the cross-check is defined, a static function "usage" should be
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# defined, which is to be called from main (to circumvent warnings
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# regarding unused function in main file)
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# static int usage (int * argument);
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#
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# The last argument is for specific CFLAGS, that need to be set
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# for the compiler to generate a warning on the cross-check.
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# This may need adaption for future compilers / CFLAG-settings.
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#
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AC_DEFUN([_OPAL_CHECK_SPECIFIC_ATTRIBUTE], [
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AC_MSG_CHECKING([for __attribute__([$1])])
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AC_CACHE_VAL(opal_cv___attribute__[$1], [
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#
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# Try to compile using the C compiler, then C++
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#
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AC_TRY_COMPILE([$2],[],
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[
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#
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# In case we did succeed: Fine, but was this due to the
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# attribute being ignored/skipped? Grep for IgNoRe/skip in conftest.err
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# and if found, reset the ompi_cv__attribute__var=0
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#
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opal_cv___attribute__[$1]=1
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_OPAL_ATTRIBUTE_FAIL_SEARCH([$1])
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],
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[opal_cv___attribute__[$1]=0])
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# Only test C++ if we're building Open MPI (i.e.,
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# project_ompi). OPAL and ORTE do not use C++ at all, so
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# let's not add a C++ compiler into their requirement list.
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m4_ifdef([project_ompi],
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[if test "$opal_cv___attribute__[$1]" = "1" ; then
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AC_LANG_PUSH(C++)
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AC_TRY_COMPILE([
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extern "C" {
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$2
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}],[],
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[
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opal_cv___attribute__[$1]=1
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_OPAL_ATTRIBUTE_FAIL_SEARCH([$1])
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],[opal_cv___attribute__[$1]=0])
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AC_LANG_POP(C++)
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fi])
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#
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# If the attribute is supported by both compilers,
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# try to recompile a *cross-check*, IFF defined.
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#
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if test '(' "$opal_cv___attribute__[$1]" = "1" -a "[$3]" != "" ')' ; then
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ac_c_werror_flag_safe=$ac_c_werror_flag
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ac_c_werror_flag="yes"
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CFLAGS_safe=$CFLAGS
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CFLAGS="$CFLAGS [$4]"
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AC_TRY_COMPILE([$3],
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[
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int i=4711;
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i=usage(&i);
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],
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[opal_cv___attribute__[$1]=0],
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[
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#
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# In case we did NOT succeed: Fine, but was this due to the
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# attribute being ignored? Grep for IgNoRe in conftest.err
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# and if found, reset the ompi_cv__attribute__var=0
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#
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opal_cv___attribute__[$1]=1
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_OPAL_ATTRIBUTE_FAIL_SEARCH([$1])
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])
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ac_c_werror_flag=$ac_c_werror_flag_safe
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CFLAGS=$CFLAGS_safe
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fi
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])
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if test "$opal_cv___attribute__[$1]" = "1" ; then
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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fi
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])
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#
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# Test the availability of __attribute__ and with the help
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# of _OPAL_CHECK_SPECIFIC_ATTRIBUTE for the support of
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# particular attributes. Compilers, that do not support an
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# attribute most often fail with a warning (when the warning
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# level is set).
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# The compilers output is parsed in _OPAL_ATTRIBUTE_FAIL_SEARCH
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#
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# To add a new attributes __NAME__ add the
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# opal_cv___attribute__NAME
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# add a new check with _OPAL_CHECK_SPECIFIC_ATTRIBUTE (possibly with a cross-check)
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# _OPAL_CHECK_SPECIFIC_ATTRIBUTE([name], [int foo (int arg) __attribute__ ((__name__));], [], [])
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# and define the corresponding
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# AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_NAME, [$opal_cv___attribute__NAME],
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# [Whether your compiler has __attribute__ NAME or not])
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# and decide on a correct macro (in opal/include/opal_config_bottom.h):
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# # define __opal_attribute_NAME(x) __attribute__(__NAME__)
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#
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# Please use the "__"-notation of the attribute in order not to
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# clash with predefined names or macros (e.g. const, which some compilers
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# do not like..)
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#
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AC_DEFUN([OPAL_CHECK_ATTRIBUTES], [
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AC_LANG(C)
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AC_MSG_CHECKING(for __attribute__)
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AC_CACHE_VAL(opal_cv___attribute__, [
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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/* Check for the longest available __attribute__ (since gcc-2.3) */
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struct foo {
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char a;
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int x[2] __attribute__ ((__packed__));
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};
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],
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[],
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[opal_cv___attribute__=1],
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[opal_cv___attribute__=0],
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)
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if test "$opal_cv___attribute__" = "1" ; then
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AC_TRY_COMPILE(
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[#include <stdlib.h>
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/* Check for the longest available __attribute__ (since gcc-2.3) */
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struct foo {
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char a;
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int x[2] __attribute__ ((__packed__));
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};
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],
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[],
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[opal_cv___attribute__=1],
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[opal_cv___attribute__=0],
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)
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fi
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])
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AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE, [$opal_cv___attribute__],
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[Whether your compiler has __attribute__ or not])
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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 "$opal_cv___attribute__" = "0" ; then
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AC_MSG_RESULT([no])
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opal_cv___attribute__aligned=0
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opal_cv___attribute__always_inline=0
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opal_cv___attribute__cold=0
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opal_cv___attribute__const=0
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opal_cv___attribute__deprecated=0
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opal_cv___attribute__deprecated_argument=0
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opal_cv___attribute__format=0
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opal_cv___attribute__format_funcptr=0
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opal_cv___attribute__hot=0
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opal_cv___attribute__malloc=0
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opal_cv___attribute__may_alias=0
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opal_cv___attribute__no_instrument_function=0
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opal_cv___attribute__nonnull=0
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opal_cv___attribute__noreturn=0
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opal_cv___attribute__noreturn_funcptr=0
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opal_cv___attribute__packed=0
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opal_cv___attribute__pure=0
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opal_cv___attribute__sentinel=0
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opal_cv___attribute__unused=0
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opal_cv___attribute__visibility=0
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opal_cv___attribute__warn_unused_result=0
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opal_cv___attribute__weak_alias=0
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else
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AC_MSG_RESULT([yes])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([aligned],
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[struct foo { char text[4]; } __attribute__ ((__aligned__(8)));],
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[],
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[])
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#
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# Ignored by PGI-6.2.5; -- recognized by output-parser
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#
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([always_inline],
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[int foo (int arg) __attribute__ ((__always_inline__));],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([cold],
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[
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int foo(int arg1, int arg2) __attribute__ ((__cold__));
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int foo(int arg1, int arg2) { return arg1 * arg2 + arg1; }
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],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([const],
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[
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int foo(int arg1, int arg2) __attribute__ ((__const__));
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int foo(int arg1, int arg2) { return arg1 * arg2 + arg1; }
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],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([deprecated],
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[
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int foo(int arg1, int arg2) __attribute__ ((__deprecated__));
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int foo(int arg1, int arg2) { return arg1 * arg2 + arg1; }
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],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([deprecated_argument],
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[
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int foo(int arg1, int arg2) __attribute__ ((__deprecated__("compiler allows argument")));
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int foo(int arg1, int arg2) { return arg1 * arg2 + arg1; }
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],
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[],
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[])
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ATTRIBUTE_CFLAGS=
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case "$ompi_c_vendor" in
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gnu)
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ATTRIBUTE_CFLAGS="-Wall"
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;;
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intel)
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# we want specifically the warning on format string conversion
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ATTRIBUTE_CFLAGS="-we181"
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;;
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esac
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([format],
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[
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int this_printf (void *my_object, const char *my_format, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
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],
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[
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static int usage (int * argument);
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extern int this_printf (int arg1, const char *my_format, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
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static int usage (int * argument) {
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return this_printf (*argument, "%d", argument); /* This should produce a format warning */
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}
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/* The autoconf-generated main-function is int main(), which produces a warning by itself */
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int main(void);
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],
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[$ATTRIBUTE_CFLAGS])
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ATTRIBUTE_CFLAGS=
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case "$ompi_c_vendor" in
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gnu)
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ATTRIBUTE_CFLAGS="-Wall"
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;;
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intel)
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# we want specifically the warning on format string conversion
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ATTRIBUTE_CFLAGS="-we181"
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;;
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esac
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([format_funcptr],
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[
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int (*this_printf)(void *my_object, const char *my_format, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
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],
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[
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static int usage (int * argument);
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extern int (*this_printf) (int arg1, const char *my_format, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
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static int usage (int * argument) {
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return (*this_printf) (*argument, "%d", argument); /* This should produce a format warning */
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}
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/* The autoconf-generated main-function is int main(), which produces a warning by itself */
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int main(void);
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],
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[$ATTRIBUTE_CFLAGS])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([hot],
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[
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int foo(int arg1, int arg2) __attribute__ ((__hot__));
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int foo(int arg1, int arg2) { return arg1 * arg2 + arg1; }
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],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([malloc],
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[
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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int * foo(int arg1) __attribute__ ((__malloc__));
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int * foo(int arg1) { return (int*) malloc(arg1); }
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],
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[],
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[])
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#
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# Attribute may_alias: No suitable cross-check available, that works for non-supporting compilers
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# Ignored by intel-9.1.045 -- turn off with -wd1292
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# Ignored by PGI-6.2.5; ignore not detected due to missing cross-check
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#
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([may_alias],
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[int * p_value __attribute__ ((__may_alias__));],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([no_instrument_function],
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[int * foo(int arg1) __attribute__ ((__no_instrument_function__));],
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[],
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[])
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#
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# Attribute nonnull:
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# Ignored by intel-compiler 9.1.045 -- recognized by cross-check
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# Ignored by PGI-6.2.5 (pgCC) -- recognized by cross-check
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#
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ATTRIBUTE_CFLAGS=
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case "$ompi_c_vendor" in
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gnu)
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ATTRIBUTE_CFLAGS="-Wall"
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;;
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intel)
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# we do not want to get ignored attributes warnings, but rather real warnings
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ATTRIBUTE_CFLAGS="-wd1292"
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;;
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esac
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([nonnull],
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[
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int square(int *arg) __attribute__ ((__nonnull__));
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int square(int *arg) { return *arg; }
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],
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[
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static int usage(int * argument);
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int square(int * argument) __attribute__ ((__nonnull__));
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int square(int * argument) { return (*argument) * (*argument); }
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static int usage(int * argument) {
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return square( ((void*)0) ); /* This should produce an argument must be nonnull warning */
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}
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/* The autoconf-generated main-function is int main(), which produces a warning by itself */
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int main(void);
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],
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[$ATTRIBUTE_CFLAGS])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([noreturn],
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[
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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void fatal(int arg1) __attribute__ ((__noreturn__));
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void fatal(int arg1) { exit(arg1); }
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],
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[],
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[])
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([noreturn_funcptr],
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[
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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extern void (*fatal_exit)(int arg1) __attribute__ ((__noreturn__));
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void fatal(int arg1) { fatal_exit (arg1); }
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],
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[],
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[$ATTRIBUTE_CFLAGS])
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|
|
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|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([packed],
|
|
[
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struct foo {
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char a;
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int x[2] __attribute__ ((__packed__));
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};
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],
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[],
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[])
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|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([pure],
|
|
[
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int square(int arg) __attribute__ ((__pure__));
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int square(int arg) { return arg * arg; }
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],
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[],
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[])
|
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|
|
#
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# Attribute sentinel:
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# Ignored by the intel-9.1.045 -- recognized by cross-check
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|
# intel-10.0beta works fine
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|
# Ignored by PGI-6.2.5 (pgCC) -- recognized by output-parser and cross-check
|
|
# Ignored by pathcc-2.2.1 -- recognized by cross-check (through grep ignore)
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|
#
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|
ATTRIBUTE_CFLAGS=
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case "$ompi_c_vendor" in
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gnu)
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ATTRIBUTE_CFLAGS="-Wall"
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;;
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intel)
|
|
# we do not want to get ignored attributes warnings
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ATTRIBUTE_CFLAGS="-wd1292"
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;;
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esac
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_OPAL_CHECK_SPECIFIC_ATTRIBUTE([sentinel],
|
|
[
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int my_execlp(const char * file, const char *arg, ...) __attribute__ ((__sentinel__));
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],
|
|
[
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static int usage(int * argument);
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int my_execlp(const char * file, const char *arg, ...) __attribute__ ((__sentinel__));
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static int usage(int * argument) {
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void * last_arg_should_be_null = argument;
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return my_execlp ("lala", "/home/there", last_arg_should_be_null); /* This should produce a warning */
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}
|
|
/* The autoconf-generated main-function is int main(), which produces a warning by itself */
|
|
int main(void);
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|
],
|
|
[$ATTRIBUTE_CFLAGS])
|
|
|
|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([unused],
|
|
[
|
|
int square(int arg1 __attribute__ ((__unused__)), int arg2);
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|
int square(int arg1, int arg2) { return arg2; }
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|
],
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|
[],
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|
[])
|
|
|
|
|
|
#
|
|
# Ignored by PGI-6.2.5 (pgCC) -- recognized by the output-parser
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|
#
|
|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([visibility],
|
|
[
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int square(int arg1) __attribute__ ((__visibility__("hidden")));
|
|
],
|
|
[],
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|
[])
|
|
|
|
|
|
#
|
|
# Attribute warn_unused_result:
|
|
# Ignored by the intel-compiler 9.1.045 -- recognized by cross-check
|
|
# Ignored by pathcc-2.2.1 -- recognized by cross-check (through grep ignore)
|
|
#
|
|
ATTRIBUTE_CFLAGS=
|
|
case "$ompi_c_vendor" in
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gnu)
|
|
ATTRIBUTE_CFLAGS="-Wall"
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;;
|
|
intel)
|
|
# we do not want to get ignored attributes warnings
|
|
ATTRIBUTE_CFLAGS="-wd1292"
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;;
|
|
esac
|
|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([warn_unused_result],
|
|
[
|
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int foo(int arg) __attribute__ ((__warn_unused_result__));
|
|
int foo(int arg) { return arg + 3; }
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],
|
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[
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|
static int usage(int * argument);
|
|
int foo(int arg) __attribute__ ((__warn_unused_result__));
|
|
|
|
int foo(int arg) { return arg + 3; }
|
|
static int usage(int * argument) {
|
|
foo (*argument); /* Should produce an unused result warning */
|
|
return 0;
|
|
}
|
|
|
|
/* The autoconf-generated main-function is int main(), which produces a warning by itself */
|
|
int main(void);
|
|
],
|
|
[$ATTRIBUTE_CFLAGS])
|
|
|
|
|
|
_OPAL_CHECK_SPECIFIC_ATTRIBUTE([weak_alias],
|
|
[
|
|
int foo(int arg);
|
|
int foo(int arg) { return arg + 3; }
|
|
int foo2(int arg) __attribute__ ((__weak__, __alias__("foo")));
|
|
],
|
|
[],
|
|
[])
|
|
|
|
fi
|
|
|
|
# Now that all the values are set, define them
|
|
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_ALIGNED, [$opal_cv___attribute__aligned],
|
|
[Whether your compiler has __attribute__ aligned or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_ALWAYS_INLINE, [$opal_cv___attribute__always_inline],
|
|
[Whether your compiler has __attribute__ always_inline or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_COLD, [$opal_cv___attribute__cold],
|
|
[Whether your compiler has __attribute__ cold or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_CONST, [$opal_cv___attribute__const],
|
|
[Whether your compiler has __attribute__ const or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_DEPRECATED, [$opal_cv___attribute__deprecated],
|
|
[Whether your compiler has __attribute__ deprecated or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_DEPRECATED_ARGUMENT, [$opal_cv___attribute__deprecated_argument],
|
|
[Whether your compiler has __attribute__ deprecated with optional argument])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_FORMAT, [$opal_cv___attribute__format],
|
|
[Whether your compiler has __attribute__ format or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_FORMAT_FUNCPTR, [$opal_cv___attribute__format_funcptr],
|
|
[Whether your compiler has __attribute__ format and it works on function pointers])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_HOT, [$opal_cv___attribute__hot],
|
|
[Whether your compiler has __attribute__ hot or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_MALLOC, [$opal_cv___attribute__malloc],
|
|
[Whether your compiler has __attribute__ malloc or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_MAY_ALIAS, [$opal_cv___attribute__may_alias],
|
|
[Whether your compiler has __attribute__ may_alias or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_NO_INSTRUMENT_FUNCTION, [$opal_cv___attribute__no_instrument_function],
|
|
[Whether your compiler has __attribute__ no_instrument_function or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_NONNULL, [$opal_cv___attribute__nonnull],
|
|
[Whether your compiler has __attribute__ nonnull or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_NORETURN, [$opal_cv___attribute__noreturn],
|
|
[Whether your compiler has __attribute__ noreturn or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_NORETURN_FUNCPTR, [$opal_cv___attribute__noreturn_funcptr],
|
|
[Whether your compiler has __attribute__ noreturn and it works on function pointers])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_PACKED, [$opal_cv___attribute__packed],
|
|
[Whether your compiler has __attribute__ packed or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_PURE, [$opal_cv___attribute__pure],
|
|
[Whether your compiler has __attribute__ pure or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_SENTINEL, [$opal_cv___attribute__sentinel],
|
|
[Whether your compiler has __attribute__ sentinel or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_UNUSED, [$opal_cv___attribute__unused],
|
|
[Whether your compiler has __attribute__ unused or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_VISIBILITY, [$opal_cv___attribute__visibility],
|
|
[Whether your compiler has __attribute__ visibility or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_WARN_UNUSED_RESULT, [$opal_cv___attribute__warn_unused_result],
|
|
[Whether your compiler has __attribute__ warn unused result or not])
|
|
AC_DEFINE_UNQUOTED(OPAL_HAVE_ATTRIBUTE_WEAK_ALIAS, [$opal_cv___attribute__weak_alias],
|
|
[Whether your compiler has __attribute__ weak alias or not])
|
|
])
|