d2c3a3cede
https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/284401). Ensure to test for -Wno-long-* in combination with other CFLAGS that we added, not just individually. This commit was SVN r19838.
301 строка
12 KiB
Bash
301 строка
12 KiB
Bash
dnl -*- shell-script -*-
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dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2006 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2006 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2006 Los Alamos National Security, LLC. All rights
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dnl reserved.
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dnl Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
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dnl Copyright (c) 2008 Cisco Systems, Inc. All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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dnl
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dnl $HEADER$
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dnl
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# OMPI_SETUP_CXX()
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# ----------------
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# Do everything required to setup the C++ compiler. Safe to AC_REQUIRE
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# this macro.
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AC_DEFUN([OMPI_SETUP_CXX],[
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AC_REQUIRE([_OMPI_START_SETUP_CXX])
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AC_REQUIRE([_OMPI_PROG_CXX])
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# Do we want code coverage
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if test "$WANT_COVERAGE" = "1"; then
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if test "$ompi_cxx_vendor" = "gnu" ; then
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AC_MSG_WARN([$OMPI_COVERAGE_FLAGS has been added to CFLAGS (--enable-coverage)])
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WANT_DEBUG=1
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CXXFLAGS="${CXXFLAGS} $OMPI_COVERAGE_FLAGS"
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WRAPPER_EXTRA_CXXFLAGS="${WRAPPER_EXTRA_CXXFLAGS} $OMPI_COVERAGE_FLAGS"
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else
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AC_MSG_WARN([Code coverage functionality is currently available only with GCC suite])
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AC_MSG_ERROR([Configure: cannot continue])
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fi
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fi
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# Do we want debugging?
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if test "$WANT_DEBUG" = "1" -a "$enable_debug_symbols" != "no" ; then
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CXXFLAGS="$CXXFLAGS -g"
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OMPI_UNIQ(CXXFLAGS)
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AC_MSG_WARN([-g has been added to CXXFLAGS (--enable-debug)])
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fi
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# These flags are generally g++-specific; even the g++-impersonating
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# compilers won't accept them.
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OMPI_CXXFLAGS_BEFORE_PICKY="$CXXFLAGS"
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if test "$WANT_PICKY_COMPILER" = 1 -a "$ompi_cxx_vendor" = "gnu"; then
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add="-Wall -Wundef -Wno-long-long"
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# see if -Wno-long-double works...
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AC_LANG_PUSH(C++)
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CXXFLAGS_orig="$CXXFLAGS"
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CXXFLAGS="$CXXFLAGS $add -Wno-long-double -fstrict-prototype"
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AC_CACHE_CHECK([if $CXX supports -Wno-long-double],
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[ompi_cv_cxx_wno_long_double],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cxx_wno_long_double="yes"],
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[ompi_cv_cxx_wno_long_double="no"])])
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CXXFLAGS="$CXXFLAGS_orig"
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AC_LANG_POP(C++)
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if test "$ompi_cv_cxx_wno_long_double" = "yes" ; then
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add="$add -Wno-long-double"
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fi
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CXXFLAGS="$CXXFLAGS $add"
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OMPI_UNIQ(CXXFLAGS)
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if test "$add" != "" ; then
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AC_MSG_WARN([$add has been added to CXXFLAGS (--enable-picky)])
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fi
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unset add
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fi
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# See if this version of g++ allows -finline-functions
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if test "$GXX" = "yes"; then
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CXXFLAGS_orig="$CXXFLAGS"
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CXXFLAGS="$CXXFLAGS -finline-functions"
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add=
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AC_CACHE_CHECK([if $CXX supports -finline-functions],
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[ompi_cv_cxx_finline_functions],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cxx_finline_functions="yes"],
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[ompi_cv_cxx_finline_functions="no"])])
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if test "$ompi_cv_cxx_finline_functions" = "yes" ; then
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add=" -finline-functions"
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fi
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CXXFLAGS="$CXXFLAGS_orig$add"
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OMPI_UNIQ(CXXFLAGS)
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if test "$add" != "" ; then
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AC_MSG_WARN([$add has been added to CXXFLAGS])
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fi
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unset add
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fi
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# Check for special things due to C++ exceptions
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ENABLE_CXX_EXCEPTIONS=no
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HAVE_CXX_EXCEPTIONS=0
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AC_ARG_ENABLE([cxx-exceptions],
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[AC_HELP_STRING([--enable-cxx-exceptions],
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[enable support for C++ exceptions (default: disabled)])],
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[ENABLE_CXX_EXCEPTIONS="$enableval"])
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AC_MSG_CHECKING([if want C++ exception handling])
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AC_MSG_RESULT([$ENABLE_CXX_EXCEPTIONS])
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if test "$ENABLE_CXX_EXCEPTIONS" = "yes"; then
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# config/cxx_have_exceptions.m4
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OMPI_CXX_HAVE_EXCEPTIONS
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# config/cxx_find_exception_flags.m4
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OMPI_CXX_FIND_EXCEPTION_FLAGS
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if test "$OMPI_CXX_EXCEPTIONS" = "1"; then
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HAVE_CXX_EXCEPTIONS=1
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# Test to see if the C compiler likes these flags
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AC_MSG_CHECKING([to see if C compiler likes the exception flags])
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CFLAGS="$CFLAGS $OMPI_CXX_EXCEPTIONS_CXXFLAGS"
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AC_LANG_SAVE
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AC_LANG_C
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AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[]], [[int i = 0;]]),
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[AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AC_MSG_WARN([C++ exception flags are different between the C and C++ compilers; this configure script cannot currently handle this scenario. Either disable C++ exception support or send mail to the Open MPI users list.])
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AC_MSG_ERROR([*** Cannot continue])])
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AC_LANG_RESTORE
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# We can't test the F77 and F90 compilers now because we
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# haven't found/set the up yet. So just save the flags
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# and test them later (in ompi_setup_f77.m4 and
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# ompi_setup_f90.m4).
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CXXFLAGS="$CXXFLAGS $OMPI_CXX_EXCEPTIONS_CXXFLAGS"
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LDFLAGS="$LDFLAGS $OMPI_CXX_EXCEPTIONS_LDFLAGS"
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WRAPPER_EXTRA_CFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_CFLAGS}"
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WRAPPER_EXTRA_FFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_FFLAGS}"
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WRAPPER_EXTRA_FCFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_FCFLAGS}"
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WRAPPER_EXTRA_CXXFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_CXXFLAGS}"
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fi
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fi
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AC_DEFINE_UNQUOTED(OMPI_HAVE_CXX_EXCEPTION_SUPPORT, $HAVE_CXX_EXCEPTIONS,
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[Whether or not we have compiled with C++ exceptions support])
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# Make sure we can link with the C compiler
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if[ test "$ompi_cv_cxx_compiler_vendor" != "microsoft" ]; then
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OMPI_LANG_LINK_WITH_C([C++], [],
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[cat <<EOF >&2
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**********************************************************************
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* It appears that your C++ compiler is unable to link against object
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* files created by your C compiler. This generally indicates either
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* a conflict between the options specified in CFLAGS and CXXFLAGS
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* or a problem with the local compiler installation. More
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* information (including exactly what command was given to the
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* compilers and what error resulted when the commands were executed) is
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* available in the config.log file in this directory.
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**********************************************************************
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EOF
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AC_MSG_ERROR([C and C++ compilers are not link compatible. Can not continue.])])
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fi
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# Find some more characteristics of the C++ compiler
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# config/cxx_find_template_repository.m4
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OMPI_CXX_FIND_TEMPLATE_REPOSITORY
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# config/cxx_find_template_parameters.m4
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OMPI_CXX_FIND_TEMPLATE_PARAMETERS
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# see if the C++ compiler supports __builtin_expect
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AC_LANG_PUSH(C++)
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AC_CACHE_CHECK([if $CXX supports __builtin_expect],
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[ompi_cv_cxx_supports___builtin_expect],
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[AC_TRY_LINK([],
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[void *ptr = (void*) 0;
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if (__builtin_expect (ptr != (void*) 0, 1)) return 0;],
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[ompi_cv_cxx_supports___builtin_expect="yes"],
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[ompi_cv_cxx_supports___builtin_expect="no"])])
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if test "$ompi_cv_cxx_supports___builtin_expect" = "yes" ; then
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have_builtin_expect=1
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else
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have_builtin_expect=0
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fi
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AC_DEFINE_UNQUOTED([OMPI_CXX_HAVE_BUILTIN_EXPECT], [$have_builtin_expect],
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[Whether C++ compiler supports __builtin_expect])
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AC_LANG_POP(C++)
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# see if the C compiler supports __builtin_prefetch
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AC_LANG_PUSH(C++)
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AC_CACHE_CHECK([if $CXX supports __builtin_prefetch],
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[ompi_cv_cxx_supports___builtin_prefetch],
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[AC_TRY_LINK([],
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[int ptr;
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__builtin_prefetch(&ptr,0,0);],
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[ompi_cv_cxx_supports___builtin_prefetch="yes"],
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[ompi_cv_cxx_supports___builtin_prefetch="no"])])
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if test "$ompi_cv_cxx_supports___builtin_prefetch" = "yes" ; then
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have_builtin_prefetch=1
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else
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have_builtin_prefetch=0
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fi
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AC_DEFINE_UNQUOTED([OMPI_CXX_HAVE_BUILTIN_PREFETCH], [$have_builtin_prefetch],
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[Whether C++ compiler supports __builtin_prefetch])
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AC_LANG_POP(C++)
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# If we are on HP-UX, ensure that we're using aCC
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case "$host" in
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*hpux*)
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if test "$BASECXX" = "CC"; then
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AC_MSG_WARN([*** You will probably have problems compiling the MPI 2])
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AC_MSG_WARN([*** C++ bindings with the HP-UX CC compiler. You should])
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AC_MSG_WARN([*** probably be using the aCC compiler. Re-run configure])
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AC_MSG_WARN([*** with the environment variable "CXX=aCC".])
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fi
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;;
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esac
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# see if the compiler supports const_cast of 2-dimensional arrays
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AC_LANG_PUSH(C++)
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AC_CACHE_CHECK([if $CXX supports const_cast<> properly],
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[ompi_cv_cxx_supports_2d_const_cast],
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[AC_TRY_COMPILE([int non_const_func(int ranges[][3]);
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int cast_test(const int ranges[][3]) {
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return non_const_func(const_cast<int(*)[3]>(ranges));
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}],
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[],
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[ompi_cv_cxx_supports_2d_const_cast="yes"],
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[ompi_cv_cxx_supports_2d_const_cast="no"])])
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if test "$ompi_cv_cxx_supports_2d_const_cast" = "yes" ; then
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use_2d_const_cast=1
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else
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use_2d_const_cast=0
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fi
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AC_DEFINE_UNQUOTED([OMPI_CXX_SUPPORTS_2D_CONST_CAST],
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[$use_2d_const_cast],
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[Whether a const_cast on a 2-d array will work with the C++ compiler])
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unset use_2d_const_cast
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AC_LANG_POP(C++)
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# Note: gcc-imperonating compilers accept -O3
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if test "$WANT_DEBUG" = "1"; then
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OPTFLAGS=
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else
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if test "$GXX" = yes; then
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OPTFLAGS="-O3"
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else
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OPTFLAGS="-O"
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fi
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fi
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# config/ompi_check_optflags.m4
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OMPI_CHECK_OPTFLAGS(["$CXXFLAGS"])
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AC_MSG_CHECKING([for C++ optimization flags])
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AC_MSG_RESULT([$co_result])
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CXXFLAGS="$co_result"
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])
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AC_DEFUN([_OMPI_START_SETUP_CXX],[
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ompi_show_subtitle "C++ compiler and preprocessor"
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])
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AC_DEFUN([_OMPI_PROG_CXX],[
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ompi_cxxflags_save="$CXXFLAGS"
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AC_PROG_CXX
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AC_PROG_CXXCPP
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BASECXX="`basename $CXX`"
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CXXFLAGS="$ompi_cxxflags_save"
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AC_DEFINE_UNQUOTED(OMPI_CXX, "$CXX", [OMPI underlying C++ compiler])
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set dummy $CXX
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ompi_cxx_argv0=[$]2
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OMPI_WHICH([$ompi_cxx_argv0], [OMPI_CXX_ABSOLUTE])
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AC_SUBST(OMPI_CXX_ABSOLUTE)
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OMPI_CXX_COMPILER_VENDOR([ompi_cxx_vendor])
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# Make sure that the C++ compiler both works and is actually a C++
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# compiler (if not cross-compiling). Don't just use the AC macro
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# so that we can have a pretty message. Do something here that
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# should force the linking of C++-specific things (e.g., STL
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# strings) so that we can force a hard check of compiling,
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# linking, and running a C++ application Note that some C
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# compilers, such as at least some versions of the GNU and Intel
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# compilers, will detect that the file extension is ".cc" and
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# therefore switch into a pseudo-C++ personality which works for
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# *compiling*, but does not work for *linking*. So in this test,
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# we want to cover the entire spectrum (compiling, linking,
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# running).
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if[ test "$ompi_cv_cxx_compiler_vendor" != "microsoft" ]; then
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OMPI_CHECK_COMPILER_WORKS([C++], [#include <string>],
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[std::string foo = "Hello, world"], [],
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[AC_MSG_ERROR([Could not run a simple C++ program. Aborting.])])
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fi
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])
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