169 строки
4.7 KiB
Bash
169 строки
4.7 KiB
Bash
dnl -*- shell-script -*-
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dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University.
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dnl All rights reserved.
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dnl Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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dnl All rights 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 $COPYRIGHT$
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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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AC_DEFUN([OMPI_SETUP_CXX],[
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# Modularize this setup so that sub-configure.in scripts can use this
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# same setup code.
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ompi_show_subtitle "C++ compiler and preprocessor"
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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, "$CXX", [OMPI underlying C++ compiler])
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# Check for compilers that impersonate g++
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AC_MSG_CHECKING([for compilers that impersonate g++])
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msg=
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TRULY_GXX=$GXX
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if test "$GXX" = "yes"; then
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AC_TRY_COMPILE([], [
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int i = 3;
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#if __INTEL_COMPILER
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#error Yes, I am lying about being g++.
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#endif
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], [], [msg=intel])
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# If we made it through unscathed, then it really is g++
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if test -z "$msg"; then
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TRULY_GXX=yes
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else
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TRULY_GXX=no
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fi
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else
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# We never thought that this was GXX to begin with
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msg="not applicable"
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TRULY_GXX=no
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fi
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AC_MSG_RESULT([$msg])
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# Do we want debugging?
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if test "$WANT_DEBUG" = "1"; 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 "$TRULY_GXX" = "yes" -a "$WANT_PICKY_COMPILER" = 1; then
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add="-g -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_TRY_COMPILE([], [], add="$add -Wno-long-double")
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CXXFLAGS="$CXXFLAGS_orig"
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AC_LANG_POP(C++)
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CXXFLAGS="$CXXFLAGS $add"
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OMPI_UNIQ(CXXFLAGS)
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AC_MSG_WARN([$add has been added to CXXFLAGS (--enable-picky)])
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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="$CXXFLAGS -finline-functions"
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add=
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AC_TRY_COMPILE([], [], add=" -finline-functions")
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CXXFLAGS="$CXXFLAGS_orig$add"
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OMPI_UNIQ(CXXFLAGS)
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AC_MSG_WARN([$add has been added to CXXFLAGS])
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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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WRAPPER_EXTRA_CFLAGS=
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WRAPPER_EXTRA_FFLAGS=
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WRAPPER_EXTRA_CXXFLAGS=
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WRAPPER_EXTRA_LDFLAGS=
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WRAPPER_EXTRA_LIBS=
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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"
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WRAPPER_EXTRA_FFLAGS="$OMPI_CXX_EXCEPTIONS_FFLAGS"
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WRAPPER_EXTRA_CXXFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS"
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fi
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fi
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AC_DEFINE_UNQUOTED(OMPI_HAVE_CXX_EXCEPTION_SUPPORT, $HAVE_CXX_EXCEPTIONS,
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[Whether or not we have compiled with C++ exceptions support])
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# Find some more characteristics of the C++ compiler
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# config/cxx_find_template_repository.m4
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OMPI_CXX_FIND_TEMPLATE_REPOSITORY
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# config/cxx_find_template_parameters.m4
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OMPI_CXX_FIND_TEMPLATE_PARAMETERS
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# If we are on HP-UX, ensure that we're using aCC
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case "$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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# Same rationale for g++ as with gcc in OMPI_SETUP_CC.
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# Note: gcc-imperonating compilers accept -O3, so there's no need for
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# $TRULY_GCC here.
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if test "$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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# 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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