[speex-dev] libspeex/SSE Intrinsics with GCC 3.3.x

[Aron Rosenberg]

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.

Aron Rosenberg
SightSpeed

+++++ Add to configure.in ++++++++

echo -n "Checking for Platform ASM Speedups..."
case "$target" in
     i?86*)
         CFLAGS="$CFLAGS -D_USE_SSE -O3 -msse"
         echo "Found and Activating SSE"
         ;;
     powerpc-apple-darwin*)
         CFLAGS="-faltivec"
         echo "Found and Activating Altivec"
         ;;
     *)
         echo "None Found"
         ;;
esac

<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.
>
>         Jean-Marc
>
>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[1]: *** [nb_celp.lo] Error 1
> > make[1]: Leaving directory `/usr/local/src/mdean/speex-1.1.4/libspeex'
> > make: *** [all-recursive] Error 1
> >
> >
> > --- >8 ----
> > List archives:  http://www.xiph.org/archives/
> > Ogg project homepage: http://www.xiph.org/ogg/
> > To unsubscribe from this list, send a message to 
> 'speex-dev-request at xiph.org'
> > containing only the word 'unsubscribe' in the body.  No subject is needed.
> > Unsubscribe messages sent to the list will be ignored/filtered.
>--
>Jean-Marc Valin
>http://www.xiph.org/~jm/
>LABORIUS
>Université de Sherbrooke, Québec, Canada

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'speex-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.