c604c5da2f
the vendor is gnu. Otherwise, if GCC is set for all the compilers who impersonate gcc like icc. This commit was SVN r9217.
202 строки
6.8 KiB
Bash
202 строки
6.8 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) 2004-2006 High Performance Computing Center Stuttgart,
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dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 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_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([OMPI_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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OMPI_C_COMPILER_VENDOR([ompi_c_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_c_vendor" = "gnu" ; then
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CLEANFILES="*.bb *.bbg *.da *.*.gcov ${CLEANFILES}"
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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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CFLAGS="-ftest-coverage -fprofile-arcs ${CFLAGS}"
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WRAPPER_EXTRA_CFLAGS="-ftest-coverage -fprofile-arcs ${WRAPPER_EXTRA_CFLAGS}"
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else
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AC_MSG_WARN([Code coverage functionality is currently available only with GCC])
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AC_MSG_ERROR([Configure: Cannot continue])
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fi
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fi
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# Do we want debugging?
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if test "$WANT_DEBUG" = "1"; then
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if test "$ompi_c_vendor" = "gnu"; then
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CFLAGS="$CFLAGS -g3"
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else
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CFLAGS="$CFLAGS -g"
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fi
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OMPI_UNIQ(CFLAGS)
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AC_MSG_WARN([-g has been added to CFLAGS (--enable-debug)])
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fi
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# These flags are generally gcc-specific; even the
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# gcc-impersonating compilers won't accept them.
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OMPI_CFLAGS_BEFORE_PICKY="$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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AC_CACHE_CHECK([if $CC supports -Wno-long-double],
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[ompi_cv_cc_wno_long_double],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_wno_long_double="yes"],
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[ompi_cv_cc_wno_long_double="no"])])
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CFLAGS="$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 $add"
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OMPI_UNIQ(CFLAGS)
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AC_MSG_WARN([$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="$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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OMPI_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 $RESTRICT_CFLAGS],
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[ompi_cv_cc_restrict_cflags],
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[AC_TRY_COMPILE([], [],
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[ompi_cv_cc_restrict_cflags="yes"],
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[ompi_cv_cc_restrict_cflags="no"])])
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if test "ompi_cv_cc_restruct_cflags" = "yes" ; then
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add="$RESTRUCT_CFLAGS"
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fi
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CFLAGS="${CFLAGS_orig}${add}"
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OMPI_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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# 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 "$GCC" = yes; then
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OPTFLAGS="-O3"
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else
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OPTFLAGS="-O"
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fi
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OMPI_CHECK_OPTFLAGS("$OMPI_CFLAGS_BEFORE_PICKY")
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OMPI_CFLAGS_BEFORE_PICKY="$co_result"
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AC_MSG_CHECKING([for C optimization flags])
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OMPI_CHECK_OPTFLAGS(["$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(OMPI_CC, "$CC", [OMPI underlying C compiler])
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OMPI_CC_ABSOLUTE="`which $CC`"
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AC_SUBST(OMPI_CC_ABSOLUTE)
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])
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