Commit 2cc52d96 authored by Pedro Gonnet's avatar Pedro Gonnet

switch to autotools.


Former-commit-id: e3d79ccca47be821e425f2b305cf3a68548fa4f1
parent 2cb8639c
#*******************************************************************************
# This file is part of GadgetSMP.
# Coypright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser 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 Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#******************************************************************************/
CC=gcc
FC=gfortran
OPTS=-DTIMER -DCOUNTER -DCPU_TPS=2.2e9 -DHAVE_ZLIB -DHAVE_SETAFFINITY -D_GNU_SOURCE
CFLAGS=-O3 -g -std=gnu99 -Wall -Werror -march=native -mtune=native -ffast-math -fomit-frame-pointer -malign-double -fstrict-aliasing -fopenmp
# CFLAGS=-O0 -g -std=gnu99 -Wall -Werror -fopenmp
LDFLAGS=-std=gnu99 -lm -lpthread -fopenmp -lz
FFLAGS=$(CFLAGS)
OBJS=space.o runner.o test.o
default: all
depfile: $(wildcard *.c) $(wildcard *.h)
$(CC) -MM *.c *.h > depfile
include depfile
%.o: Makefile
%.o: %.c Makefile
$(CC) -c $(CFLAGS) $(OPTS) $< -o $@
# $(CC) -c $(CFLAGS) $(OPTS) $< -dA -S
test: $(OBJS)
gcc $^ $(LDFLAGS) -o test
all: test
clean:
rm -f $(OBJS) test
#! /bin/sh
# autogen.sh
# This file is part of GadgetSMP.
# Coypright (c) 2012 pedro.gonnet@durham.ac.uk.
#
# 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/>.
# make libtool and stuff
libtoolize --force --copy
# run aclocal
aclocal -Im4/
# run autoconf
autoconf
# run autoheader to generate config.h.in
autoheader
# run automake
automake --add-missing
# This file is part of GadgetSMP.
# Coypright (c) 2012 pedro.gonnet@durham.ac.uk.
#
# 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/>.
# init the project
AC_INIT(src/space.c)
VERSION="0.0.1"
AC_SUBST(VERSION)
AM_INIT_AUTOMAKE(GadgetSMP,VERSION)
AC_GNU_SOURCE
AC_PROG_LIBTOOL
# my own macro collection
AC_CONFIG_MACRO_DIR([m4])
# generate header file
AM_CONFIG_HEADER(config.h)
# compiler settings
CFLAGS="-Wall $(CFLAGS)"
# find and test the compiler
AM_PROG_CC_C_O
AC_PROG_CC_C99
AC_LANG_C
# AX_CC_MAXOPT
AX_FUNC_POSIX_MEMALIGN
AX_GCC_ARCHFLAG([no])
AX_EXT
# autoconf stuff
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_HEADER_STDC
# check for the libraries we will need
AC_CHECK_LIB(m,sqrt,,AC_MSG_ERROR(something is wrong with the math library!))
# Check for pthreads
ACX_PTHREAD([LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
CC="$PTHREAD_CC" LDFLAGS="$PTHREAD_LIBS $LIBS"],
AC_MSG_ERROR([Could not find a working version of
the pthread library. Make sure you have the library and header files installed
or use CPPFLAGS and LDFLAGS if the library is installed in a
non-standard location.]))
# check for zlib
AX_CHECK_ZLIB()
# check for memalign
AX_FUNC_POSIX_MEMALIGN
# Check for OpenMP
AX_OPENMP
AC_SUBST(OPENMP_CFLAGS)
# check for setaffinity
AC_USE_SYSTEM_EXTENSIONS
AC_CHECK_FUNC( pthread_setaffinity_np , AC_DEFINE([HAVE_SETAFFINITY],[true],
[Defined if pthread_setaffinity_np exists.]) )
# Check for timing functions needed by cycle.h
AC_C_INLINE
AC_HEADER_TIME
AC_CHECK_HEADERS([sys/time.h c_asm.h intrinsics.h mach/mach_time.h])
AC_CHECK_TYPE([hrtime_t],[AC_DEFINE(HAVE_HRTIME_T, 1, [Define to 1 if hrtime_t is defined in <sys/time.h>])],,[#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif])
AC_CHECK_FUNCS([gethrtime read_real_time time_base_to_time clock_gettime mach_absolute_time])
AC_MSG_CHECKING([for _rtc intrinsic])
rtc_ok=yes
AC_TRY_LINK([#ifdef HAVE_INTRINSICS_H
#include <intrinsics.h>
#endif], [_rtc()], [AC_DEFINE(HAVE__RTC,1,[Define if you have the UNICOS _rtc() intrinsic.])], [rtc_ok=no])
AC_MSG_RESULT($rtc_ok)
# make the documentation
DX_INIT_DOXYGEN(libchebfun,doc/Doxyfile,doc/)
# generate the Makefiles
AC_OUTPUT(Makefile src/Makefile examples/Makefile doc/Makefile)
# do the same magic in other directories
# AC_CONFIG_SUBDIRS(src examples)
This diff is collapsed.
# This file is part of libchebfun.
# Coypright (c) 2010 The Chebfun Team.
#
# 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/>.
all: Doxyfile
@DX_ENV@ @DX_DOXYGEN@ Doxyfile
clean:
rm -rf html/ latex/ man/
distclean: clean
This diff is collapsed.
%% Scaling and efficiency plots for the first test
test = importdata( 'test_nosort.totals');
datadir = 'Opteron8380';
test = importdata( [ datadir '/snap_C90.totals' ]);
ncores = size( test , 1 );
col = 11;
clf
subplot('position',[ 0.05 , 0.1 , 0.4 , 0.8 ]);
plot( 1:ncores , test(1,10) ./ test(:,10) , '-k' , 'LineWidth' , 2 ); hold on;
plot( 1:ncores , test(1,col) ./ test(:,col) , '-k' , 'LineWidth' , 2 ); hold on;
xlabel('nr. cores');
plot( [1,ncores] , [1,ncores] , ':k' , 'LineWidth' , 1.4 );
hold off;
title('Speedup');
title('Speedup GadgetSMP');
axis([ 1 , ncores , 0 , ncores ]);
subplot('position',[ 0.52 0.1 , 0.4 , 0.8 ]);
plot( 1:ncores , test(1,10) ./ test(:,10) ./ (1:ncores)' , '-k' , 'LineWidth' , 2 ); hold on;
plot( 1:ncores , test(1,col) ./ test(:,col) ./ (1:ncores)' , '-k' , 'LineWidth' , 2 ); hold on;
plot( [1,ncores] , [1,1] , ':k' , 'LineWidth' , 1.4 );
text(4*ncores/5,1,sprintf('%.2f',min(test(:,10))),'BackgroundColor',[1,1,1],'FontSize',12);
% text(4*ncores/5,1,sprintf('%.2f',min(test(:,10))),'BackgroundColor',[1,1,1],'FontSize',12);
xlabel('nr. cores');
hold off;
title('Efficiency');
title('Efficiency GadgetSMP');
axis([ 1 , ncores , 0 , 1.2 ]);
% Print this plot
......
......@@ -17,6 +17,8 @@
*
******************************************************************************/
/* Config parameters. */
#include "../config.h"
/* Some standard headers. */
#include <stdio.h>
......@@ -28,12 +30,11 @@
#include <omp.h>
/* Conditional headers. */
#ifdef HAVE_ZLIB
#include <zlib.h>
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif
/* Local headers. */
#define INLINE
#include "cycle.h"
#include "lock.h"
#include "space.h"
......@@ -209,7 +210,7 @@ void map_dump ( struct part *p , struct cell *c , void *data ) {
void read_coords ( char *fname , struct part *parts , int N ) {
#ifdef HAVE_ZLIB
#ifdef HAVE_LIBZ
gzFile *fd;
char buff[1024];
int k;
......@@ -263,7 +264,7 @@ void read_coords ( char *fname , struct part *parts , int N ) {
void read_cutoffs ( char *fname , struct part *parts , int N ) {
#ifdef HAVE_ZLIB
#ifdef HAVE_LIBZ
gzFile *fd;
char buff[1024];
int k;
......@@ -317,7 +318,7 @@ void read_cutoffs ( char *fname , struct part *parts , int N ) {
void read_id ( char *fname , struct part *parts , int N ) {
#ifdef HAVE_ZLIB
#ifdef HAVE_LIBZ
gzFile *fd;
char buff[1024];
int k;
......@@ -371,7 +372,7 @@ void read_id ( char *fname , struct part *parts , int N ) {
void read_dt ( char *fname , struct part *parts , int N ) {
#ifdef HAVE_ZLIB
#ifdef HAVE_LIBZ
gzFile *fd;
char buff[1024];
int k;
......
#!/bin/bash
# Set the default OpenMP behaviour
export OMP_WAIT_POLICY=PASSIVE
# Clear up the memory first
# ./memhog `free -g | grep Mem | awk '{print int(0.9*$2)}'`
# loop over number of CPUs
for cpu in {1..32}
do
# Set some environment variables for OpenMP
export OMP_NUM_THREADS=$cpu
export OMP_THREAD_LIMIT=$cpu
export OMP_PROC_BIND=TRUE
# ./test -r 100 -t $cpu -q $cpu -b "25000 25000 25000" -N 149646 -c data/Coordinates.txt -s "12500 12500 12500" -h data/SmoothingLength.txt > test_${cpu}.dump
./test -r 100 -t $cpu -q $cpu -b "100 100 100" -N 3664514 -c data2/Coordinates.txt -h data2/SmoothingLength.txt > test2_${cpu}.dump
# ./test -r 100 -t $cpu -q $cpu -b "140 140 140" -N 7741 -c shrink/Coordinates.txt -s "70 70 70" -h shrink/SmoothingLength.txt > shrink_${cpu}.dump
done
# ===========================================================================
# http://autoconf-archive.cryp.to/acx_mpi.html
# ===========================================================================
#
# SYNOPSIS
#
# ACX_MPI([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
#
# DESCRIPTION
#
# This macro tries to find out how to compile programs that use MPI
# (Message Passing Interface), a standard API for parallel process
# communication (see http://www-unix.mcs.anl.gov/mpi/)
#
# On success, it sets the MPICC, MPICXX, MPIF77, or MPIFC output variable
# to the name of the MPI compiler, depending upon the current language.
# (This may just be $CC/$CXX/$F77/$FC, but is more often something like
# mpicc/mpiCC/mpif77/mpif90.) It also sets MPILIBS to any libraries that
# are needed for linking MPI (e.g. -lmpi or -lfmpi, if a special
# MPICC/MPICXX/MPIF77/MPIFC was not found).
#
# If you want to compile everything with MPI, you should set:
#
# CC="MPICC" #OR# CXX="MPICXX" #OR# F77="MPIF77" #OR# FC="MPIFC"
# LIBS="$MPILIBS $LIBS"
#
# NOTE: The above assumes that you will use $CC (or whatever) for linking
# as well as for compiling. (This is the default for automake and most
# Makefiles.)
#
# The user can force a particular library/compiler by setting the
# MPICC/MPICXX/MPIF77/MPIFC and/or MPILIBS environment variables.
#
# ACTION-IF-FOUND is a list of shell commands to run if an MPI library is
# found, and ACTION-IF-NOT-FOUND is a list of commands to run if it is not
# found. If ACTION-IF-FOUND is not specified, the default action will
# define HAVE_MPI.
#
# LICENSE
#
# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
# Copyright (c) 2008 Julian C. Cummings <cummings@cacr.caltech.edu>
#
# 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.
AC_DEFUN([ACX_MPI], [
AC_PREREQ(2.50) dnl for AC_LANG_CASE
AC_LANG_CASE([C], [
AC_REQUIRE([AC_PROG_CC])
AC_ARG_VAR(MPICC,[MPI C compiler command])
AC_CHECK_PROGS(MPICC, mpicc hcc mpxlc_r mpxlc mpcc cmpicc, $CC)
acx_mpi_save_CC="$CC"
CC="$MPICC"
AC_SUBST(MPICC)
],
[C++], [
AC_REQUIRE([AC_PROG_CXX])
AC_ARG_VAR(MPICXX,[MPI C++ compiler command])
AC_CHECK_PROGS(MPICXX, mpic++ mpicxx mpiCC hcp mpxlC_r mpxlC mpCC cmpic++, $CXX)
acx_mpi_save_CXX="$CXX"
CXX="$MPICXX"
AC_SUBST(MPICXX)
],
[Fortran 77], [
AC_REQUIRE([AC_PROG_F77])
AC_ARG_VAR(MPIF77,[MPI Fortran 77 compiler command])
AC_CHECK_PROGS(MPIF77, mpif77 hf77 mpxlf_r mpxlf mpf77 cmpifc, $F77)
acx_mpi_save_F77="$F77"
F77="$MPIF77"
AC_SUBST(MPIF77)
],
[Fortran], [
AC_REQUIRE([AC_PROG_FC])
AC_ARG_VAR(MPIFC,[MPI Fortran compiler command])
AC_CHECK_PROGS(MPIFC, mpif90 mpxlf95_r mpxlf90_r mpxlf95 mpxlf90 mpf90 cmpif90c, $FC)
acx_mpi_save_FC="$FC"
FC="$MPIFC"
AC_SUBST(MPIFC)
])
if test x = x"$MPILIBS"; then
AC_LANG_CASE([C], [AC_CHECK_FUNC(MPI_Init, [MPILIBS=" "])],
[C++], [AC_CHECK_FUNC(MPI_Init, [MPILIBS=" "])],
[Fortran 77], [AC_MSG_CHECKING([for MPI_Init])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[ call MPI_Init])],[MPILIBS=" "
AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)])],
[Fortran], [AC_MSG_CHECKING([for MPI_Init])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[ call MPI_Init])],[MPILIBS=" "
AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)])])
fi
AC_LANG_CASE([Fortran 77], [
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(fmpi, MPI_Init, [MPILIBS="-lfmpi"])
fi
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(fmpich, MPI_Init, [MPILIBS="-lfmpich"])
fi
],
[Fortran], [
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(fmpi, MPI_Init, [MPILIBS="-lfmpi"])
fi
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpichf90, MPI_Init, [MPILIBS="-lmpichf90"])
fi
])
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpi, MPI_Init, [MPILIBS="-lmpi"])
fi
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpich, MPI_Init, [MPILIBS="-lmpich"])
fi
dnl We have to use AC_TRY_COMPILE and not AC_CHECK_HEADER because the
dnl latter uses $CPP, not $CC (which may be mpicc).
AC_LANG_CASE([C], [if test x != x"$MPILIBS"; then
AC_MSG_CHECKING([for mpi.h])
AC_TRY_COMPILE([#include <mpi.h>],[],[AC_MSG_RESULT(yes)], [MPILIBS=""
AC_MSG_RESULT(no)])
fi],
[C++], [if test x != x"$MPILIBS"; then
AC_MSG_CHECKING([for mpi.h])
AC_TRY_COMPILE([#include <mpi.h>],[],[AC_MSG_RESULT(yes)], [MPILIBS=""
AC_MSG_RESULT(no)])
fi],
[Fortran 77], [if test x != x"$MPILIBS"; then
AC_MSG_CHECKING([for mpif.h])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[ include 'mpif.h'])],[AC_MSG_RESULT(yes)], [MPILIBS=""
AC_MSG_RESULT(no)])
fi],
[Fortran], [if test x != x"$MPILIBS"; then
AC_MSG_CHECKING([for mpif.h])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[ include 'mpif.h'])],[AC_MSG_RESULT(yes)], [MPILIBS=""
AC_MSG_RESULT(no)])
fi])
AC_LANG_CASE([C], [CC="$acx_mpi_save_CC"],
[C++], [CXX="$acx_mpi_save_CXX"],
[Fortran 77], [F77="$acx_mpi_save_F77"],
[Fortran], [FC="$acx_mpi_save_FC"])
AC_SUBST(MPILIBS)
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x = x"$MPILIBS"; then
$2
:
else
ifelse([$1],,[AC_DEFINE(HAVE_MPI,1,[Define if you have the MPI library.])],[$1])
:
fi
])dnl ACX_MPI
This diff is collapsed.
# ===========================================================================
# http://autoconf-archive.cryp.to/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_COMPILER_FLAGS, 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.
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, [AC_HELP_STRING([--enable-portable-binary], [disable compiler optimizations that would produce unportable binaries])],
acx_maxopt_portable=$withval, 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_COMPILER_FLAGS($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 $icc_flags; do
AX_CHECK_COMPILER_FLAGS($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 $icc_archflag"
fi
fi
;;
gnu)
# default optimization flags for gcc on all systems
CFLAGS="-O3 -fomit-frame-pointer"
# -malign-double for x86 systems
AX_CHECK_COMPILER_FLAGS(-malign-double, CFLAGS="$CFLAGS -malign-double")
# -fstrict-aliasing for gcc-2.95+
AX_CHECK_COMPILER_FLAGS(-fstrict-aliasing,
CFLAGS="$CFLAGS -fstrict-aliasing")
# note that we enable "unsafe" fp optimization with other compilers, too
AX_CHECK_COMPILER_FLAGS(-ffast-math, CFLAGS="$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_COMPILER_FLAGS($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
])
# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
#
# DESCRIPTION
#
# Check whether the given FLAG works with the current language's compiler
# or gives an error. (Warnings, however, are ignored)
#
# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
# success/failure.
#
# If EXTRA-FLAGS is defined, it is added to the current language's default
# flags (e.g. CFLAGS) when the check is done. The check is thus made with
# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
# force the compiler to issue an error when a bad flag is given.
#
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
# LICENSE
#
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
# 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