dnl -*- shell-script -*- dnl dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana dnl University Research and Technology dnl Corporation. All rights reserved. dnl Copyright (c) 2004-2006 The University of Tennessee and The University dnl of Tennessee Research Foundation. All rights dnl reserved. dnl Copyright (c) 2004-2008 High Performance Computing Center Stuttgart, dnl University of Stuttgart. All rights reserved. dnl Copyright (c) 2004-2006 The Regents of the University of California. dnl All rights reserved. dnl Copyright (c) 2006 Los Alamos National Security, LLC. All rights dnl reserved. dnl Copyright (c) 2007-2009 Sun Microsystems, Inc. All rights reserved. dnl Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved. dnl $COPYRIGHT$ dnl dnl Additional copyrights may follow dnl dnl $HEADER$ dnl # This macro is necessary to get the title to be displayed first. :-) AC_DEFUN([OMPI_SETUP_CXX_BANNER],[ ompi_show_subtitle "C++ compiler and preprocessor" ]) # This macro is necessary because PROG_CXX* is REQUIREd by multiple # places in SETUP_CXX. AC_DEFUN([OMPI_PROG_CXX],[ OMPI_VAR_SCOPE_PUSH([ompi_cxxflags_save]) ompi_cxxflags_save="$CXXFLAGS" AC_PROG_CXX AC_PROG_CXXCPP CXXFLAGS="$ompi_cxxflags_save" OMPI_VAR_SCOPE_POP ]) # OMPI_SETUP_CXX() # ---------------- # Do everything required to setup the C++ compiler. Safe to AC_REQUIRE # this macro. AC_DEFUN([OMPI_SETUP_CXX],[ AC_REQUIRE([OMPI_SETUP_CXX_BANNER]) _OMPI_SETUP_CXX_COMPILER _OMPI_CXX_CHECK_EXCEPTIONS AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "1"], [OMPI_CXX_FIND_TEMPLATE_REPOSITORY OMPI_CXX_FIND_TEMPLATE_PARAMETERS OMPI_CHECK_IDENT([CXX], [CXXFLAGS], [cc], [C++])]) _OMPI_CXX_CHECK_BUILTIN _OMPI_CXX_CHECK_2D_CONST_CAST AM_CONDITIONAL(WANT_MPI_CXX_BINDINGS, [test "$WANT_MPI_CXX_SUPPORT" = 1]) AC_DEFINE_UNQUOTED(OMPI_WANT_CXX_BINDINGS, $WANT_MPI_CXX_SUPPORT, [Whether we want MPI C++ support or not]) ]) # _OMPI_SETUP_CXX_COMPILER() # -------------------------- # Setup the CXX compiler AC_DEFUN([_OMPI_SETUP_CXX_COMPILER],[ OMPI_VAR_SCOPE_PUSH(ompi_cxx_compiler_works) # There's a few cases here: # # 1. --enable-mpi-cxx was supplied: error if we don't find a C++ # compiler # 2. --disable-mpi-cxx was supplied: check for a C++ compiler anyway # (so we can have a functional mpic++ wrapper compiler), but # don't error if we don't find one. # 3. neither was specified: same was #2 # # Then only proceed to do all the rest of the C++ checks if we # both found a c++ compiler and want the C++ bindings (i.e., either # case #1 or #3) # Must REQUIRE the PROG_CXX macro and not call it directly here for # reasons well-described in the AC2.64 (and beyond) docs. AC_REQUIRE([OMPI_PROG_CXX]) BASECXX="`basename $CXX`" AS_IF([test "x$CXX" = "x"], [CXX=none]) set dummy $CXX ompi_cxx_argv0=[$]2 OMPI_WHICH([$ompi_cxx_argv0], [OMPI_CXX_ABSOLUTE]) AS_IF([test "x$OMPI_CXX_ABSOLUTE" = "x"], [OMPI_CXX_ABSOLUTE=none]) AC_DEFINE_UNQUOTED(OMPI_CXX, "$CXX", [OMPI underlying C++ compiler]) AC_SUBST(OMPI_CXX_ABSOLUTE) # Make sure that the C++ compiler both works and is actually a C++ # compiler (if not cross-compiling). Don't just use the AC macro # so that we can have a pretty message. Do something here that # should force the linking of C++-specific things (e.g., STL # strings) so that we can force a hard check of compiling, # linking, and running a C++ application. Note that some C # compilers, such as at least some versions of the GNU and Intel # compilers, will detect that the file extension is ".cc" and # therefore switch into a pseudo-C++ personality which works for # *compiling*, but does not work for *linking*. So in this test, # we want to cover the entire spectrum (compiling, linking, # running). Note that it is not a fatal error if the C++ compiler # does not work unless the user specifically requested the C++ # bindings. AS_IF([test "$CXX" = "none"], [ompi_cxx_compiler_works=no], [AS_IF([test "$ompi_cv_cxx_compiler_vendor" = "microsoft" ], [ompi_cxx_compiler_works=yes], [OMPI_CHECK_COMPILER_WORKS([C++], [#include ], [std::string foo = "Hello, world"], [ompi_cxx_compiler_works=yes], [ompi_cxx_compiler_works=no])])]) AS_IF([test "$ompi_cxx_compiler_works" = "yes"], [_OMPI_SETUP_CXX_COMPILER_BACKEND], [AS_IF([test "$enable_mpi_cxx" = "yes"], [AC_MSG_WARN([Could not find functional C++ compiler, but]) AC_MSG_WARN([support for the C++ MPI bindings was requested.]) AC_MSG_ERROR([Cannot continue])], [WANT_MPI_CXX_SUPPORT=0])]) AC_MSG_CHECKING([if able to build the MPI C++ bindings]) AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "1"], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]) AS_IF([test "$enable_mpi_cxx" = "yes"], [AC_MSG_WARN([MPI C++ binding support requested but not delivered]) AC_MSG_ERROR([Cannot continue])])]) AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "1"], [OMPI_CXX_COMPILER_VENDOR([ompi_cxx_vendor])]) OMPI_VAR_SCOPE_POP ]) # _OMPI_SETUP_CXX_COMPILER_BACKEND() # ---------------------------------- # Back end of _OMPI_SETUP_CXX_COMPILER_BACKEND() AC_DEFUN([_OMPI_SETUP_CXX_COMPILER_BACKEND],[ # Do we want code coverage if test "$WANT_COVERAGE" = "1"; then if test "$ompi_cxx_vendor" = "gnu" ; then AC_MSG_WARN([$OMPI_COVERAGE_FLAGS has been added to CFLAGS (--enable-coverage)]) WANT_DEBUG=1 CXXFLAGS="${CXXFLAGS} $OMPI_COVERAGE_FLAGS" WRAPPER_EXTRA_CXXFLAGS="${WRAPPER_EXTRA_CXXFLAGS} $OMPI_COVERAGE_FLAGS" else AC_MSG_WARN([Code coverage functionality is currently available only with GCC suite]) AC_MSG_ERROR([Configure: cannot continue]) fi fi # Do we want debugging? if test "$WANT_DEBUG" = "1" -a "$enable_debug_symbols" != "no" ; then CXXFLAGS="$CXXFLAGS -g" OMPI_UNIQ(CXXFLAGS) AC_MSG_WARN([-g has been added to CXXFLAGS (--enable-debug)]) fi # These flags are generally g++-specific; even the g++-impersonating # compilers won't accept them. OMPI_CXXFLAGS_BEFORE_PICKY="$CXXFLAGS" if test "$WANT_PICKY_COMPILER" = 1 -a "$ompi_cxx_vendor" = "gnu"; then add="-Wall -Wundef -Wno-long-long" # see if -Wno-long-double works... AC_LANG_PUSH(C++) CXXFLAGS_orig="$CXXFLAGS" CXXFLAGS="$CXXFLAGS $add -Wno-long-double -fstrict-prototype" AC_CACHE_CHECK([if $CXX supports -Wno-long-double], [ompi_cv_cxx_wno_long_double], [AC_TRY_COMPILE([], [], [dnl Alright, the -Wno-long-double did not produce any errors... dnl Well well, try to extract a warning regarding unrecognized or ignored options AC_TRY_COMPILE([], [long double test;], [ ompi_cv_cxx_wno_long_double="yes" if test -s conftest.err ; then dnl Yes, it should be "ignor", in order to catch ignoring and ignore for i in invalid ignor unrecognized ; do $GREP -iq $i conftest.err if test "$?" = "0" ; then ompi_cv_cxx_wno_long_double="no", break; fi done fi ], [ompi_cv_cxx_wno_long_double="no"])], [ompi_cv_cxx_wno_long_double="no"])]) CXXFLAGS="$CXXFLAGS_orig" AC_LANG_POP(C++) if test "$ompi_cv_cxx_wno_long_double" = "yes" ; then add="$add -Wno-long-double" fi CXXFLAGS="$CXXFLAGS $add" OMPI_UNIQ(CXXFLAGS) if test "$add" != "" ; then AC_MSG_WARN([$add has been added to CXXFLAGS (--enable-picky)]) fi unset add fi # See if this version of g++ allows -finline-functions if test "$GXX" = "yes"; then CXXFLAGS_orig="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -finline-functions" add= AC_CACHE_CHECK([if $CXX supports -finline-functions], [ompi_cv_cxx_finline_functions], [AC_TRY_COMPILE([], [], [ompi_cv_cxx_finline_functions="yes"], [ompi_cv_cxx_finline_functions="no"])]) if test "$ompi_cv_cxx_finline_functions" = "yes" ; then add=" -finline-functions" fi CXXFLAGS="$CXXFLAGS_orig$add" OMPI_UNIQ(CXXFLAGS) if test "$add" != "" ; then AC_MSG_WARN([$add has been added to CXXFLAGS]) fi unset add fi # Make sure we can link with the C compiler if[ test "$ompi_cv_cxx_compiler_vendor" != "microsoft" ]; then OMPI_LANG_LINK_WITH_C([C++], [], [cat <&2 ********************************************************************** * It appears that your C++ compiler is unable to link against object * files created by your C compiler. This generally indicates either * a conflict between the options specified in CFLAGS and CXXFLAGS * or a problem with the local compiler installation. More * information (including exactly what command was given to the * compilers and what error resulted when the commands were executed) is * available in the config.log file in this directory. ********************************************************************** EOF AC_MSG_ERROR([C and C++ compilers are not link compatible. Can not continue.])]) fi # If we are on HP-UX, ensure that we're using aCC case "$host" in *hpux*) if test "$BASECXX" = "CC"; then AC_MSG_WARN([*** You will probably have problems compiling the MPI 2]) AC_MSG_WARN([*** C++ bindings with the HP-UX CC compiler. You should]) AC_MSG_WARN([*** probably be using the aCC compiler. Re-run configure]) AC_MSG_WARN([*** with the environment variable "CXX=aCC".]) fi ;; esac # Note: gcc-imperonating compilers accept -O3 if test "$WANT_DEBUG" = "1"; then OPTFLAGS= else if test "$GXX" = yes; then OPTFLAGS="-O3" else OPTFLAGS="-O" fi fi # config/ompi_ensure_contains_optflags.m4 OMPI_ENSURE_CONTAINS_OPTFLAGS(["$CXXFLAGS"]) AC_MSG_CHECKING([for C++ optimization flags]) AC_MSG_RESULT([$co_result]) CXXFLAGS="$co_result" # bool type size and alignment AC_LANG_PUSH(C++) AC_CHECK_SIZEOF(bool) OMPI_C_GET_ALIGNMENT(bool, OPAL_ALIGNMENT_CXX_BOOL) AC_LANG_POP(C++) ]) # _OMPI_CXX_CHECK_EXCEPTIONS() # ---------------------------- # Check for exceptions, skipping the test if we don't want the C++ # bindings AC_DEFUN([_OMPI_CXX_CHECK_EXCEPTIONS],[ # Check for special things due to C++ exceptions ENABLE_CXX_EXCEPTIONS=no HAVE_CXX_EXCEPTIONS=0 AC_ARG_ENABLE([cxx-exceptions], [AC_HELP_STRING([--enable-cxx-exceptions], [enable support for C++ exceptions (default: disabled)])], [ENABLE_CXX_EXCEPTIONS="$enableval"]) AC_MSG_CHECKING([if want C++ exception handling]) AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "0"], [AS_IF([test "$$enable_cxx_exceptions" = "yes"], [AC_MSG_RESULT([error]) AC_MSG_WARN([--enable-cxx-exceptions was specified, but the MPI C++ bindings were disabled]) AC_MSG_ERROR([Cannot continue])], [AC_MSG_RESULT([skipped])])], [_OMPI_CXX_CHECK_EXCEPTIONS_BACKEND]) AC_DEFINE_UNQUOTED(OMPI_HAVE_CXX_EXCEPTION_SUPPORT, $HAVE_CXX_EXCEPTIONS, [Whether or not we have compiled with C++ exceptions support]) ]) # _OMPI_CXX_CHECK_EXCEPTIONS_BACKEND() # ------------------------------------ # Back end of _OMPI_CXX_CHECK_EXCEPTIONS AC_DEFUN([_OMPI_CXX_CHECK_EXCEPTIONS_BACKEND],[ AC_MSG_RESULT([$ENABLE_CXX_EXCEPTIONS]) if test "$ENABLE_CXX_EXCEPTIONS" = "yes"; then # config/cxx_have_exceptions.m4 OMPI_CXX_HAVE_EXCEPTIONS # config/cxx_find_exception_flags.m4 OMPI_CXX_FIND_EXCEPTION_FLAGS if test "$OMPI_CXX_EXCEPTIONS" = "1"; then HAVE_CXX_EXCEPTIONS=1 # Test to see if the C compiler likes these flags AC_MSG_CHECKING([to see if C compiler likes the exception flags]) CFLAGS="$CFLAGS $OMPI_CXX_EXCEPTIONS_CXXFLAGS" AC_LANG_SAVE AC_LANG_C AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[]], [[int i = 0;]]), [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]) AC_MSG_WARN([C++ exception flags are different between the C and C++ compilers; this configure script cannot currently handle this scenario. Either disable C++ exception support or send mail to the Open MPI users list.]) AC_MSG_ERROR([*** Cannot continue])]) AC_LANG_RESTORE # We can't test the F77 and F90 compilers now because we # haven't found/set the up yet. So just save the flags # and test them later (in ompi_setup_f77.m4 and # ompi_setup_f90.m4). CXXFLAGS="$CXXFLAGS $OMPI_CXX_EXCEPTIONS_CXXFLAGS" LDFLAGS="$LDFLAGS $OMPI_CXX_EXCEPTIONS_LDFLAGS" WRAPPER_EXTRA_CFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_CFLAGS}" WRAPPER_EXTRA_FFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_FFLAGS}" WRAPPER_EXTRA_FCFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_FCFLAGS}" WRAPPER_EXTRA_CXXFLAGS="$OMPI_CXX_EXCEPTIONS_CXXFLAGS ${WRAPPER_EXTRA_CXXFLAGS}" fi fi ]) # _OMPI_CXX_CHECK_BUILTIN # ----------------------- # Check for __builtin_* stuff AC_DEFUN([_OMPI_CXX_CHECK_BUILTIN],[ OMPI_VAR_SCOPE_PUSH([have_cxx_builtin_expect have_cxx_builtin_prefetch]) have_cxx_builtin_expect=0 have_cxx_builtin_prefetch=0 AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "1"], [_OMPI_CXX_CHECK_BUILTIN_BACKEND]) AC_DEFINE_UNQUOTED([OMPI_CXX_HAVE_BUILTIN_EXPECT], [$have_cxx_builtin_expect], [Whether C++ compiler supports __builtin_expect]) AC_DEFINE_UNQUOTED([OMPI_CXX_HAVE_BUILTIN_PREFETCH], [$have_cxx_builtin_prefetch], [Whether C++ compiler supports __builtin_prefetch]) OMPI_VAR_SCOPE_POP ]) # _OMPI_CXX_CHECK_BUILTIN_BACKEND # ------------------------------- # Back end of _OMPI_CXX_CHECK_BUILTIN AC_DEFUN([_OMPI_CXX_CHECK_BUILTIN_BACKEND],[ # see if the C++ compiler supports __builtin_expect AC_LANG_PUSH(C++) AC_CACHE_CHECK([if $CXX supports __builtin_expect], [ompi_cv_cxx_supports___builtin_expect], [AC_TRY_LINK([], [void *ptr = (void*) 0; if (__builtin_expect (ptr != (void*) 0, 1)) return 0;], [ompi_cv_cxx_supports___builtin_expect="yes"], [ompi_cv_cxx_supports___builtin_expect="no"])]) if test "$ompi_cv_cxx_supports___builtin_expect" = "yes" ; then have_builtin_expect=1 fi AC_LANG_POP(C++) # see if the C compiler supports __builtin_prefetch AC_LANG_PUSH(C++) AC_CACHE_CHECK([if $CXX supports __builtin_prefetch], [ompi_cv_cxx_supports___builtin_prefetch], [AC_TRY_LINK([], [int ptr; __builtin_prefetch(&ptr,0,0);], [ompi_cv_cxx_supports___builtin_prefetch="yes"], [ompi_cv_cxx_supports___builtin_prefetch="no"])]) if test "$ompi_cv_cxx_supports___builtin_prefetch" = "yes" ; then have_builtin_prefetch=1 fi AC_LANG_POP(C++) ]) # _OMPI_CXX_CHECK_2D_CONST_CAST # ----------------------------- # Check for compiler support of 2D const casts AC_DEFUN([_OMPI_CXX_CHECK_2D_CONST_CAST],[ OMPI_VAR_SCOPE_PUSH([use_2d_const_cast]) use_2d_const_cast=0 AS_IF([test "$WANT_MPI_CXX_SUPPORT" = "1"], [_OMPI_CXX_CHECK_2D_CONST_CAST_BACKEND]) AC_DEFINE_UNQUOTED([OMPI_CXX_SUPPORTS_2D_CONST_CAST], [$use_2d_const_cast], [Whether a const_cast on a 2-d array will work with the C++ compiler]) OMPI_VAR_SCOPE_POP ]) # _OMPI_CXX_CHECK_2D_CONST_CAST_BACKEND # --------------------------------- # Back end of _OMPI_CHECK_2D_CONST_CAST AC_DEFUN([_OMPI_CXX_CHECK_2D_CONST_CAST_BACKEND],[ # see if the compiler supports const_cast of 2-dimensional arrays AC_LANG_PUSH(C++) AC_CACHE_CHECK([if $CXX supports const_cast<> properly], [ompi_cv_cxx_supports_2d_const_cast], [AC_TRY_COMPILE([int non_const_func(int ranges[][3]); int cast_test(const int ranges[][3]) { return non_const_func(const_cast(ranges)); }], [], [ompi_cv_cxx_supports_2d_const_cast="yes"], [ompi_cv_cxx_supports_2d_const_cast="no"])]) if test "$ompi_cv_cxx_supports_2d_const_cast" = "yes" ; then use_2d_const_cast=1 fi AC_LANG_POP(C++) ])