b8442ba505
flags, and mca flags are kept seperate until the very end. The main configure
wrapper flags should now be modified by using the OPAL_WRAPPER_FLAGS_ADD
macro. MCA components should either let <framework>_<component>_{LIBS,LDFLAGS}
be copied over OR set <framework>_<component>_WRAPPER_EXTRA_{LIBS,LDFLAGS}.
The situations in which WRAPPER CPPFLAGS can be set by MCA components was
made very small to match the one use case where it makes sense.
This commit was SVN r27950.
348 строки
13 KiB
Bash
348 строки
13 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) 2007-2009 Sun Microsystems, Inc. All rights reserved.
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dnl Copyright (c) 2008-2010 Cisco Systems, Inc. All rights reserved.
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dnl Copyright (c) 2012 Los Alamos National Security, LLC. All rights
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dnl 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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# OPAL_SETUP_CC()
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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([OPAL_SETUP_CC],[
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# AM_PROG_CC_C_O AC_REQUIREs AC_PROG_CC, so we have to be a little
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# careful about ordering here, and AC_REQUIRE these things so that
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# they get stamped out in the right order.
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AC_REQUIRE([_OMPI_START_SETUP_CC])
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AC_REQUIRE([_OMPI_PROG_CC])
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AC_REQUIRE([AM_PROG_CC_C_O])
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# AC_PROG_CC_C99 changes CC (instead of CFLAGS) so save CC (without c99
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# flags) for use in our wrappers.
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WRAPPER_CC="$CC"
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AC_SUBST([WRAPPER_CC])
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# From Open MPI 1.7 on we require a C99 compiant compiler
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AC_PROG_CC_C99
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# The result of AC_PROG_CC_C99 is stored in ac_cv_prog_cc_c99
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if test "x$ac_cv_prog_cc_c99" = xno ; then
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AC_MSG_WARN([Open MPI requires a C99 compiler])
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AC_MSG_ERROR([Aborting.])
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fi
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OMPI_C_COMPILER_VENDOR([ompi_c_vendor])
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# Check for standard headers, needed here because needed before
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# the types checks.
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AC_HEADER_STDC
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# GNU C and autotools are inconsistent about whether this is
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# defined so let's make it true everywhere for now... However, IBM
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# XL compilers on PPC Linux behave really badly when compiled with
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# _GNU_SOURCE defined, so don't define it in that situation.
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#
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# Don't use AC_GNU_SOURCE because it requires that no compiler
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# tests are done before setting it, and we need to at least do
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# enough tests to figure out if we're using XL or not.
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AS_IF([test "$ompi_cv_c_compiler_vendor" != "ibm"],
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[AH_VERBATIM([_GNU_SOURCE],
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[/* Enable GNU extensions on systems that have them. */
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#ifndef _GNU_SOURCE
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# undef _GNU_SOURCE
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#endif])
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AC_DEFINE([_GNU_SOURCE])])
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# Do we want code coverage
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if test "$WANT_COVERAGE" = "1"; then
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if test "$ompi_c_vendor" = "gnu" ; then
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# For compilers > gcc-4.x, use --coverage for
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# compiling and linking to circumvent trouble with
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# libgcov.
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CFLAGS_orig="$CFLAGS"
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LDFLAGS_orig="$LDFLAGS"
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CFLAGS="$CFLAGS_orig --coverage"
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LDFLAGS="$LDFLAGS_orig --coverage"
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OMPI_COVERAGE_FLAGS=
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AC_CACHE_CHECK([if $CC supports --coverage],
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[ompi_cv_cc_coverage],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_coverage="yes"],
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[ompi_cv_cc_coverage="no"])])
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if test "$ompi_cv_cc_coverage" = "yes" ; then
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OMPI_COVERAGE_FLAGS="--coverage"
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CLEANFILES="*.gcno ${CLEANFILES}"
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CONFIG_CLEAN_FILES="*.gcda *.gcov ${CONFIG_CLEAN_FILES}"
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else
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OMPI_COVERAGE_FLAGS="-ftest-coverage -fprofile-arcs"
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CLEANFILES="*.bb *.bbg ${CLEANFILES}"
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CONFIG_CLEAN_FILES="*.da *.*.gcov ${CONFIG_CLEAN_FILES}"
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fi
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CFLAGS="$CFLAGS_orig $OMPI_COVERAGE_FLAGS"
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LDFLAGS="$LDFLAGS_orig $OMPI_COVERAGE_FLAGS"
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OPAL_WRAPPER_FLAGS_ADD([CFLAGS], [$OMPI_COVERAGE_FLAGS])
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OPAL_WRAPPER_FLAGS_ADD([LDFLAGS], [$OMPI_COVERAGE_FLAGS])
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OPAL_UNIQ(CFLAGS)
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OPAL_UNIQ(LDFLAGS)
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AC_MSG_WARN([$OMPI_COVERAGE_FLAGS has been added to CFLAGS (--enable-coverage)])
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WANT_DEBUG=1
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else
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AC_MSG_WARN([Code coverage functionality is currently available only with GCC])
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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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if test "$ompi_c_vendor" = "gnu"; then
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CFLAGS="$CFLAGS -g" # keep the -g3 for when it will become a standard option.
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else
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CFLAGS="$CFLAGS -g"
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fi
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OPAL_UNIQ(CFLAGS)
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AC_MSG_WARN([-g has been added to CFLAGS (--enable-debug)])
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fi
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# These flags are generally gcc-specific; even the
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# gcc-impersonating compilers won't accept them.
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OMPI_CFLAGS_BEFORE_PICKY="$CFLAGS"
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if test "$WANT_PICKY_COMPILER" = 1 -a "$ompi_c_vendor" = "gnu" ; then
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add="-Wall -Wundef -Wno-long-long -Wsign-compare"
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add="$add -Wmissing-prototypes -Wstrict-prototypes"
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add="$add -Wcomment -pedantic"
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# see if -Wno-long-double works...
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CFLAGS_orig="$CFLAGS"
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# CFLAGS="$CFLAGS -Wno-long-double"
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# Starting with GCC-4.4, the compiler complains about not
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# knowing -Wno-long-double, only if -Wstrict-prototypes is set, too.
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#
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# Actually, this is not real fix, as GCC will pass on any -Wno- flag,
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# have fun with the warning: -Wno-britney
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CFLAGS="$CFLAGS $add -Wno-long-double -Wstrict-prototypes"
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AC_CACHE_CHECK([if $CC supports -Wno-long-double],
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[ompi_cv_cc_wno_long_double],
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[AC_TRY_COMPILE([], [],
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[
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dnl Alright, the -Wno-long-double did not produce any errors...
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dnl Well well, try to extract a warning regarding unrecognized or ignored options
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AC_TRY_COMPILE([], [long double test;],
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[
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ompi_cv_cc_wno_long_double="yes"
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if test -s conftest.err ; then
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dnl Yes, it should be "ignor", in order to catch ignoring and ignore
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for i in invalid ignor unrecognized ; do
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$GREP -iq $i conftest.err
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if test "$?" = "0" ; then
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ompi_cv_cc_wno_long_double="no"
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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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[ompi_cv_cc_wno_long_double="no"])],
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[ompi_cv_cc_wno_long_double="no"])])
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CFLAGS="$CFLAGS_orig"
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if test "$ompi_cv_cc_wno_long_double" = "yes" ; then
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add="$add -Wno-long-double"
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fi
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add="$add -Werror-implicit-function-declaration "
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CFLAGS="$CFLAGS $add"
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OPAL_UNIQ(CFLAGS)
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AC_MSG_WARN([$add has been added to CFLAGS (--enable-picky)])
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unset add
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fi
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# See if this version of gcc allows -finline-functions and/or
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# -fno-strict-aliasing. Even check the gcc-impersonating compilers.
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if test "$GCC" = "yes"; then
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CFLAGS_orig="$CFLAGS"
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CFLAGS="$CFLAGS_orig -finline-functions"
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add=
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AC_CACHE_CHECK([if $CC supports -finline-functions],
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[ompi_cv_cc_finline_functions],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_finline_functions="yes"],
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[ompi_cv_cc_finline_functions="no"])])
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if test "$ompi_cv_cc_finline_functions" = "yes" ; then
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add=" -finline-functions"
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fi
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CFLAGS="$CFLAGS_orig$add"
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CFLAGS_orig="$CFLAGS"
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CFLAGS="$CFLAGS_orig -fno-strict-aliasing"
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add=
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AC_CACHE_CHECK([if $CC supports -fno-strict-aliasing],
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[ompi_cv_cc_fno_strict_aliasing],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_fno_strict_aliasing="yes"],
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[ompi_cv_cc_fno_strict_aliasing="no"])])
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if test "$ompi_cv_cc_fno_strict_aliasing" = "yes" ; then
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add=" -fno-strict-aliasing"
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fi
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CFLAGS="$CFLAGS_orig$add"
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OPAL_UNIQ(CFLAGS)
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AC_MSG_WARN([$add has been added to CFLAGS])
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unset add
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fi
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# Try to enable restrict keyword
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RESTRICT_CFLAGS=
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case "$ompi_c_vendor" in
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intel)
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RESTRICT_CFLAGS="-restrict"
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;;
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sgi)
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RESTRICT_CFLAGS="-LANG:restrict=ON"
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;;
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esac
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if test ! -z "$RESTRICT_CFLAGS" ; then
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CFLAGS_orig="$CFLAGS"
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CFLAGS="$CFLAGS_orig $RESTRICT_CFLAGS"
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add=
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AC_CACHE_CHECK([if $CC supports $RESTRICT_CFLAGS],
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[ompi_cv_cc_restrict_cflags],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_restrict_cflags="yes"],
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[ompi_cv_cc_restrict_cflags="no"])])
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if test "$ompi_cv_cc_restrict_cflags" = "yes" ; then
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add=" $RESTRICT_CFLAGS"
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fi
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CFLAGS="${CFLAGS_orig}${add}"
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OPAL_UNIQ([CFLAGS])
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if test "$add" != "" ; then
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AC_MSG_WARN([$add has been added to CFLAGS])
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fi
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unset add
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fi
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# see if the C compiler supports __builtin_expect
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AC_CACHE_CHECK([if $CC supports __builtin_expect],
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[ompi_cv_cc_supports___builtin_expect],
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[AC_TRY_LINK([],
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[void *ptr = (void*) 0;
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if (__builtin_expect (ptr != (void*) 0, 1)) return 0;],
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[ompi_cv_cc_supports___builtin_expect="yes"],
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[ompi_cv_cc_supports___builtin_expect="no"])])
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if test "$ompi_cv_cc_supports___builtin_expect" = "yes" ; then
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have_cc_builtin_expect=1
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else
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have_cc_builtin_expect=0
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fi
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AC_DEFINE_UNQUOTED([OPAL_C_HAVE_BUILTIN_EXPECT], [$have_cc_builtin_expect],
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[Whether C compiler supports __builtin_expect])
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# see if the C compiler supports __builtin_prefetch
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AC_CACHE_CHECK([if $CC supports __builtin_prefetch],
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[ompi_cv_cc_supports___builtin_prefetch],
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[AC_TRY_LINK([],
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[int ptr;
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__builtin_prefetch(&ptr,0,0);],
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[ompi_cv_cc_supports___builtin_prefetch="yes"],
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[ompi_cv_cc_supports___builtin_prefetch="no"])])
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if test "$ompi_cv_cc_supports___builtin_prefetch" = "yes" ; then
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have_cc_builtin_prefetch=1
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else
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have_cc_builtin_prefetch=0
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fi
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AC_DEFINE_UNQUOTED([OPAL_C_HAVE_BUILTIN_PREFETCH], [$have_cc_builtin_prefetch],
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[Whether C compiler supports __builtin_prefetch])
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# see if the C compiler supports __builtin_clz
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AC_CACHE_CHECK([if $CC supports __builtin_clz],
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[ompi_cv_cc_supports___builtin_clz],
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[AC_TRY_LINK([],
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[int value = 0xffff; /* we know we have 16 bits set */
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if ((8*sizeof(int)-16) != __builtin_clz(value)) return 0;],
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[ompi_cv_cc_supports___builtin_clz="yes"],
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[ompi_cv_cc_supports___builtin_clz="no"])])
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if test "$ompi_cv_cc_supports___builtin_clz" = "yes" ; then
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have_cc_builtin_clz=1
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else
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have_cc_builtin_clz=0
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fi
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AC_DEFINE_UNQUOTED([OPAL_C_HAVE_BUILTIN_CLZ], [$have_cc_builtin_clz],
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[Whether C compiler supports __builtin_clz])
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# Preload the optflags for the case where the user didn't specify
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# any. If we're using GNU compilers, use -O3 (since it GNU
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# doesn't require all compilation units to be compiled with the
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# same level of optimization -- selecting a high level of
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# optimization is not prohibitive). If we're using anything else,
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# be conservative and just use -O.
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#
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# Note: gcc-impersonating compilers accept -O3
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if test "$WANT_DEBUG" = "1"; then
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OPTFLAGS=
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else
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if test "$GCC" = yes; then
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OPTFLAGS="-O3"
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else
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OPTFLAGS="-O"
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fi
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fi
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OMPI_ENSURE_CONTAINS_OPTFLAGS("$OMPI_CFLAGS_BEFORE_PICKY")
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OMPI_CFLAGS_BEFORE_PICKY="$co_result"
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AC_MSG_CHECKING([for C optimization flags])
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OMPI_ENSURE_CONTAINS_OPTFLAGS(["$CFLAGS"])
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AC_MSG_RESULT([$co_result])
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CFLAGS="$co_result"
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])
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AC_DEFUN([_OMPI_START_SETUP_CC],[
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ompi_show_subtitle "C compiler and preprocessor"
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# $%@#!@#% AIX!! This has to be called before anything invokes the C
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# compiler.
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dnl AC_AIX
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])
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AC_DEFUN([_OMPI_PROG_CC],[
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#
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# Check for the compiler
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#
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ompi_cflags_save="$CFLAGS"
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AC_PROG_CC
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BASECC="`basename $CC`"
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CFLAGS="$ompi_cflags_save"
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AC_DEFINE_UNQUOTED(OPAL_CC, "$CC", [OMPI underlying C compiler])
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set dummy $CC
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ompi_cc_argv0=[$]2
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OPAL_WHICH([$ompi_cc_argv0], [OPAL_CC_ABSOLUTE])
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AC_SUBST(OPAL_CC_ABSOLUTE)
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])
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