85b60cf2bd
are 3 arguments: the pointer to the memory location to prefetch, the type of operation that will be done on the memory (read or write) and the expected locality. This commit was SVN r10294.
226 строки
8.2 KiB
Bash
226 строки
8.2 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) 2004-2005 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) 2004-2005 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 $COPYRIGHT$
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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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OMPI_CXX_COMPILER_VENDOR([ompi_cxx_vendor])
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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([-fprofile-arcs -ftest-coverage has been added to CFLAGS (--enable-coverage)])
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WANT_DEBUG=1
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CXXFLAGS="-ftest-coverage -fprofile-arcs ${CXXFLAGS}"
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WRAPPER_EXTRA_CXXFLAGS="-ftest-coverage -fprofile-arcs ${WRAPPER_EXTRA_CXXFLAGS}"
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else
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AC_MSG_WARN([Code coverage functionality is currently available only with GCC suite])
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AC_MSG_ERROR([Configure: cannot continue])
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fi
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fi
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# Do we want debugging?
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if test "$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 -Wno-long-double"
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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])],
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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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CFLAGS="$CFLAGS $OMPI_CXX_EXCEPTIONS_CFLAGS"
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FFLAGS="$FFLAGS $OMPI_CXX_EXCEPTIONS_FFLAGS"
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CXXFLAGS="$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_CFLAGS ${WRAPPER_EXTRA_CFLAGS}"
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WRAPPER_EXTRA_FFLAGS="$OMPI_CXX_EXCEPTIONS_FFLAGS ${WRAPPER_EXTRA_FFLAGS}"
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WRAPPER_EXTRA_CXXFLAGS="$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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# 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 $CXX supports __builtin_expect],
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[ompi_cv_cxx_supports___builtin_expect],
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[AC_TRY_COMPILE([],
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[void *ptr = (void*) 0;
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if (__builtin_expect (ptr != (void*) 0, 1)) return 0;],
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[ompi_cv_cxx_supports___builtin_expect="yes"],
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[ompi_cv_cxx_supports___builtin_expect="no"])])
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if test "$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 $CXX supports __builtin_prefetch],
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[ompi_cv_cxx_supports___builtin_prefetch],
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[AC_TRY_COMPILE([],
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[int ptr;
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__builtin_prefetch(&ptr,0,0);],
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[ompi_cv_cxx_supports___builtin_prefetch="yes"],
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[ompi_cv_cxx_supports___builtin_prefetch="no"])])
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if test "$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 "$BASECXX" = "CC"; then
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AC_MSG_WARN([*** You will probably have problems compiling the MPI 2])
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AC_MSG_WARN([*** C++ bindings with the HP-UX CC compiler. You should])
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AC_MSG_WARN([*** probably be using the aCC compiler. Re-run configure])
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AC_MSG_WARN([*** with the environment variable "CXX=aCC".])
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fi
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;;
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esac
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# Note: gcc-imperonating compilers accept -O3
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if test "$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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OMPI_CXX_ABSOLUTE="`which $CXX`"
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AC_SUBST(OMPI_CXX_ABSOLUTE)
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# make sure the compiler actually works, if not cross-compiling.
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# Don't just use the AC macro so that we can have a pretty
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# message.
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OMPI_CHECK_COMPILER_WORKS([C++], [return 0], [],
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[AC_MSG_ERROR([Could not run a simple C++ program. Aborting.])])
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])
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