Revision 4c0c1a4097a4eb11899ad249841d6b6d73896d71 authored by David Lucas on 06 December 2018, 09:36:26 UTC, committed by David Lucas on 06 December 2018, 09:36:26 UTC
1 parent 74f7f5f
sse2-check.m4
dnl Check for SSE
dnl Copyright (c) 2011 FFLAS-FFPACK
dnl Created by BB, 2014-03-25
dnl ========LICENCE========
dnl This file is part of the library FFLAS-FFPACK.
dnl
dnl FFLAS-FFPACK is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library; if not, write to the Free Software
dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
dnl ========LICENCE========
dnl
dnl FF_CHECK_SSE
dnl
dnl turn on SSE4.1 extensions if available
AC_DEFUN([FF_CHECK_SSE],
[
AC_ARG_ENABLE(sse,[AC_HELP_STRING([--disable-sse], [ Disable Intel(r) SSE 4.1])])
AC_MSG_CHECKING(for SSE 4.1)
AS_IF([ test "x$enable_sse" != "xno" ],
[
BACKUP_CXXFLAGS=${CXXFLAGS}
dnl SSEFLAGS="-msse2"
SSEFLAGS="-msse4.1"
CXXFLAGS="${BACKUP_CXXFLAGS} ${SSEFLAGS}"
CODE_SSE=`cat macros/CodeChunk/sse.C`
AC_TRY_RUN([
${CODE_SSE}
],
[ sse_found="yes" ],
[ sse_found="no" ],
[
echo "cross compiling...disabling"
sse_found="no"
])
AS_IF([ test "x$sse_found" = "xyes" ],[
AC_DEFINE(HAVE_SSE4_1_INSTRUCTIONS,1,[Define if SSE is available])
AC_SUBST(SSEFLAGS)
AC_MSG_RESULT(yes)
],
[
SSEFLAGS=""
dnl Forcing to disable AVX
enable_avx="no"
AC_MSG_RESULT(no)
]
)
CXXFLAGS=${BACKUP_CXXFLAGS}
],
[
dnl --disable-sse
AC_MSG_RESULT(no [disabled])
dnl Forcing to disable AVX
enable_avx="no"
]
)
])
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