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Diffstat (limited to 'Modules/_ctypes/libffi/m4/ax_cc_maxopt.m4')
| -rw-r--r-- | Modules/_ctypes/libffi/m4/ax_cc_maxopt.m4 | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/Modules/_ctypes/libffi/m4/ax_cc_maxopt.m4 b/Modules/_ctypes/libffi/m4/ax_cc_maxopt.m4 deleted file mode 100644 index 62e3b5330b..0000000000 --- a/Modules/_ctypes/libffi/m4/ax_cc_maxopt.m4 +++ /dev/null @@ -1,181 +0,0 @@ -# =========================================================================== -# http://www.gnu.org/software/autoconf-archive/ax_cc_maxopt.html -# =========================================================================== -# -# SYNOPSIS -# -# AX_CC_MAXOPT -# -# DESCRIPTION -# -# Try to turn on "good" C optimization flags for various compilers and -# architectures, for some definition of "good". (In our case, good for -# FFTW and hopefully for other scientific codes. Modify as needed.) -# -# The user can override the flags by setting the CFLAGS environment -# variable. The user can also specify --enable-portable-binary in order to -# disable any optimization flags that might result in a binary that only -# runs on the host architecture. -# -# Note also that the flags assume that ANSI C aliasing rules are followed -# by the code (e.g. for gcc's -fstrict-aliasing), and that floating-point -# computations can be re-ordered as needed. -# -# Requires macros: AX_CHECK_COMPILE_FLAG, AX_COMPILER_VENDOR, -# AX_GCC_ARCHFLAG, AX_GCC_X86_CPUID. -# -# LICENSE -# -# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> -# Copyright (c) 2008 Matteo Frigo -# -# This program is free software: you can redistribute it and/or modify it -# under the terms of the GNU General Public License as published by the -# Free Software Foundation, either version 3 of the License, or (at your -# option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General -# Public License for more details. -# -# You should have received a copy of the GNU General Public License along -# with this program. If not, see <http://www.gnu.org/licenses/>. -# -# As a special exception, the respective Autoconf Macro's copyright owner -# gives unlimited permission to copy, distribute and modify the configure -# scripts that are the output of Autoconf when processing the Macro. You -# need not follow the terms of the GNU General Public License when using -# or distributing such scripts, even though portions of the text of the -# Macro appear in them. The GNU General Public License (GPL) does govern -# all other use of the material that constitutes the Autoconf Macro. -# -# This special exception to the GPL applies to versions of the Autoconf -# Macro released by the Autoconf Archive. When you make and distribute a -# modified version of the Autoconf Macro, you may extend this special -# exception to the GPL to apply to your modified version as well. - -#serial 13 - -AC_DEFUN([AX_CC_MAXOPT], -[ -AC_REQUIRE([AC_PROG_CC]) -AC_REQUIRE([AX_COMPILER_VENDOR]) -AC_REQUIRE([AC_CANONICAL_HOST]) - -AC_ARG_ENABLE(portable-binary, [AS_HELP_STRING([--enable-portable-binary], [disable compiler optimizations that would produce unportable binaries])], - acx_maxopt_portable=$enableval, acx_maxopt_portable=no) - -# Try to determine "good" native compiler flags if none specified via CFLAGS -if test "$ac_test_CFLAGS" != "set"; then - CFLAGS="" - case $ax_cv_c_compiler_vendor in - dec) CFLAGS="-newc -w0 -O5 -ansi_alias -ansi_args -fp_reorder -tune host" - if test "x$acx_maxopt_portable" = xno; then - CFLAGS="$CFLAGS -arch host" - fi;; - - sun) CFLAGS="-native -fast -xO5 -dalign" - if test "x$acx_maxopt_portable" = xyes; then - CFLAGS="$CFLAGS -xarch=generic" - fi;; - - hp) CFLAGS="+Oall +Optrs_ansi +DSnative" - if test "x$acx_maxopt_portable" = xyes; then - CFLAGS="$CFLAGS +DAportable" - fi;; - - ibm) if test "x$acx_maxopt_portable" = xno; then - xlc_opt="-qarch=auto -qtune=auto" - else - xlc_opt="-qtune=auto" - fi - AX_CHECK_COMPILE_FLAG($xlc_opt, - CFLAGS="-O3 -qansialias -w $xlc_opt", - [CFLAGS="-O3 -qansialias -w" - echo "******************************************************" - echo "* You seem to have the IBM C compiler. It is *" - echo "* recommended for best performance that you use: *" - echo "* *" - echo "* CFLAGS=-O3 -qarch=xxx -qtune=xxx -qansialias -w *" - echo "* ^^^ ^^^ *" - echo "* where xxx is pwr2, pwr3, 604, or whatever kind of *" - echo "* CPU you have. (Set the CFLAGS environment var. *" - echo "* and re-run configure.) For more info, man cc. *" - echo "******************************************************"]) - ;; - - intel) CFLAGS="-O3 -ansi_alias" - if test "x$acx_maxopt_portable" = xno; then - icc_archflag=unknown - icc_flags="" - case $host_cpu in - i686*|x86_64*) - # icc accepts gcc assembly syntax, so these should work: - AX_GCC_X86_CPUID(0) - AX_GCC_X86_CPUID(1) - case $ax_cv_gcc_x86_cpuid_0 in # see AX_GCC_ARCHFLAG - *:756e6547:*:*) # Intel - case $ax_cv_gcc_x86_cpuid_1 in - *6a?:*[[234]]:*:*|*6[[789b]]?:*:*:*) icc_flags="-xK";; - *f3[[347]]:*:*:*|*f4[1347]:*:*:*) icc_flags="-xP -xN -xW -xK";; - *f??:*:*:*) icc_flags="-xN -xW -xK";; - esac ;; - esac ;; - esac - if test "x$icc_flags" != x; then - for flag in $icc_flags; do - AX_CHECK_COMPILE_FLAG($flag, [icc_archflag=$flag; break]) - done - fi - AC_MSG_CHECKING([for icc architecture flag]) - AC_MSG_RESULT($icc_archflag) - if test "x$icc_archflag" != xunknown; then - CFLAGS="$CFLAGS $icc_archflag" - fi - fi - ;; - - gnu) - # default optimization flags for gcc on all systems - CFLAGS="-O3 -fomit-frame-pointer" - - # -malign-double for x86 systems - # LIBFFI -- DON'T DO THIS - CHANGES ABI - # AX_CHECK_COMPILE_FLAG(-malign-double, CFLAGS="$CFLAGS -malign-double") - - # -fstrict-aliasing for gcc-2.95+ - AX_CHECK_COMPILE_FLAG(-fstrict-aliasing, - CFLAGS="$CFLAGS -fstrict-aliasing") - - # note that we enable "unsafe" fp optimization with other compilers, too - AX_CHECK_COMPILE_FLAG(-ffast-math, CFLAGS="$CFLAGS -ffast-math") - - AX_GCC_ARCHFLAG($acx_maxopt_portable) - ;; - esac - - if test -z "$CFLAGS"; then - echo "" - echo "********************************************************" - echo "* WARNING: Don't know the best CFLAGS for this system *" - echo "* Use ./configure CFLAGS=... to specify your own flags *" - echo "* (otherwise, a default of CFLAGS=-O3 will be used) *" - echo "********************************************************" - echo "" - CFLAGS="-O3" - fi - - AX_CHECK_COMPILE_FLAG($CFLAGS, [], [ - echo "" - echo "********************************************************" - echo "* WARNING: The guessed CFLAGS don't seem to work with *" - echo "* your compiler. *" - echo "* Use ./configure CFLAGS=... to specify your own flags *" - echo "********************************************************" - echo "" - CFLAGS="" - ]) - -fi -]) |