[speex-dev] libspeex/SSE Intrinsics with GCC 3.3.x
aron at sightspeed.com
Thu Apr 1 21:40:49 PST 2004
Here is code to add to configure.in to do what you want. It preserves
CFLAGS and uses that var to hold the sse enable flags. You can subset this
under the exisiting AC_ARG for sse or just make it do it all the time. If
you notice the i?86, that means any x86 platform target will have it
enabled. You can change that i686, but keep in mind that some distros
compile/target for i386 on the glibc / gcc compiles and you will sometimes
get i386 as the target even though you are on a pentium 3/4 box.
+++++ Add to configure.in ++++++++
echo -n "Checking for Platform ASM Speedups..."
case "$target" in
CFLAGS="$CFLAGS -D_USE_SSE -O3 -msse"
echo "Found and Activating SSE"
echo "Found and Activating Altivec"
echo "None Found"
<p>At 09:08 PM 4/1/2004, you wrote:
>I'm aware of the problem, but I don't know how to get autoconf to handle
>that properly. If someone knows how to make that work with autoconf even
>with non-gcc compilers and with default CFLAGS, I'm interested.
>Le jeu 01/04/2004 à 17:21, Michael T. Dean a écrit :
> > When compiling Speex 1.1.4 with GCC 3.3.2, the option -msse must be
> > added to the CFLAGS in libspeex/Makefile.
> > GCC 3.1.1 added a new option "-msse" (see
> > http://gcc.gnu.org/gcc-3.1/changes.html , specifically under "New
> > Targets and Target Specific Improvements") to enable SSE instructions
> > within the compiler's output (for appropriate architectures).
> > Compiling speex on GCC 3.3.2 without the -msse option yields the error
> > message shown at bottom. The referenced file (xmmintrin.h) contains a
> > check to ensure that SSE is enabled (via -msse) before use:
> > #ifndef __SSE__
> > # error "SSE instruction set not enabled"
> > #else
> > This check seems to have been added to the GCC 3.3.x series.
> > Once the option is added to CFLAGS, libspeex (and the rest of the speex
> > package) compiles cleanly and executes properly.
> > Thanks,
> > Mike Dean
> > gcc -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
> > -DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DSTDC_HEADERS=1
> > -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1
> > -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1
> > -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1
> > -DHAVE_SYS_SOUNDCARD_H=1 -DHAVE_LIBOGG=1 -DHAVE_LIBM=1
> > -DVERSION=\"1.1.4\" -D_USE_SSE=1 -I. -I. -g -O2 -MT nb_celp.lo -MD -MP
> > -MF .deps/nb_celp.Tpo -c nb_celp.c -fPIC -DPIC -o .libs/nb_celp.o
> > In file included from vq.h:43,
> > from nb_celp.c:41:
> > /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.2/include/xmmintrin.h:34:3:
> > #error "SSE instruction set not enabled"
> > In file included from nb_celp.c:41:
> > vq.h:44: error: parse error before '*' token
> > vq.h:46: error: parse error before '*' token
> > make: *** [nb_celp.lo] Error 1
> > make: Leaving directory `/usr/local/src/mdean/speex-1.1.4/libspeex'
> > make: *** [all-recursive] Error 1
> > --- >8 ----
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>Université de Sherbrooke, Québec, Canada
--- >8 ----
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