Pues yo he compilado con estas definiciones de variables:
Firm Open2X:
#!/bin/sh
## -- OPEN2X USER SETTINGS
## OPEN2X - This should point to the root of your tool-chain {i.e. folder above the BIN dir}
OPEN2X=/opt/open2x/gcc-4.1.1-glibc-2.3.6
## HOST and TARGET - These should be the canonical tool names of your tool.
## For the sake of this script HOST and TARGET should be the same.
## Defaults would be 'arm-open2x-linux' for a normal Open2x tool-chain.
HOST=arm-open2x-linux
TARGET=arm-open2x-linux
BUILD=`uname -m`
PKG_CONFIG_PATH=/opt/open2x/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/lib/pkgconfig
## -- END OPEN2X USER SETTINGS
export OPEN2X
export HOST
export TARGET
export PKG_CONFIG_PATH
PREFIX=$OPEN2X
export PREFIX
PATH=$PATH:$OPEN2X/bin
export PATH
#ln -s `whereis -b pkg-config | sed 's/pkg-config\: //g'` /opt/open2x/gcc-4.1.1-glibc-2.3.6/arm-open2x-linux/bin/pkg-config
# Do not edit below here
CC="${OPEN2X}/bin/${HOST}-gcc"
CXX="${OPEN2X}/bin/${HOST}-g++"
AR="${OPEN2X}/bin/${HOST}-ar"
STRIP="${OPEN2X}/bin/${HOST}-strip"
RANLIB="${OPEN2X}/bin/${HOST}-ranlib"
CFLAGS="-DTARGET_GP2X_WIZ -O2 -ffast-math -fomit-frame-pointer -mcpu=arm920t -DARM -D_ARM_ASSEM_ -I${OPEN2X}/include -I${OPEN2X}/include/libxml2 -I${OPEN2X}/include/SDL"
LDFLAGS="-L${OPEN2X}/lib"
PKG_CONFIG="${OPEN2X}/bin/pkg-config"
export CC
export CXX
export AR
export STRIP
export RANLIB
export CFLAGS
export LDFLAGS
export PKG_CONFIG
echo Current settings.
echo
echo Install root/Working dir = $OPEN2X
echo Tool locations = $OPEN2X/bin
echo Host/Target = $HOST / $TARGET
echo
echo CC = $CC
echo CXX = $CXX
echo AR = $AR
echo STRIP = $STRIP
echo RANLIB = $RANLIB
echo CFLAGS = $CFLAGS
echo LDFLAGS = $LDFLAGS
echo PKG_CONFIG = $PKG_CONFIG
#cd vendor/des-4.04b; make -f Makefile.openwiz clean all install; cd -
#cd core; ./configure --prefix=${PREFIX} --target=${TARGET} --host=${HOST} --build=${BUILD} --enable-shared ; make -f Makefile; cd -
echo ""
echo "Now do:"
echo "cd project"
echo './configure --prefix=${PREFIX} --target=${TARGET} --host=${HOST} --build=${BUILD} --enable-shared'
Firm oficial
#!/bin/sh
## -- OPEN2X USER SETTINGS
## OPEN2X - This should point to the root of your tool-chain {i.e. folder above the BIN dir}
OPEN2X=/opt/sdkoficial2
#OPEN2X=/opt/sdkoficial
## HOST and TARGET - These should be the canonical tool names of your tool.
## For the sake of this script HOST and TARGET should be the same.
## Defaults would be 'arm-open2x-linux' for a normal Open2x tool-chain.
HOST=arm-gp2x-linux
TARGET=arm-gp2x-linux
BUILD=`uname -m`
PKG_CONFIG_PATH=/opt/sdkoficial2/arm-gp2x-linux/lib/pkgconfig
#HOST=arm-linux
#TARGET=arm-linux
#BUILD=`uname -m`
#PKG_CONFIG_PATH=/opt/sdkoficial/arm-linux/lib/pkgconfig
## -- END OPEN2X USER SETTINGS
export OPEN2X
export HOST
export TARGET
export PKG_CONFIG_PATH
PREFIX=$OPEN2X
export PREFIX
PATH=$PATH:$OPEN2X/bin
export PATH
#ln -s `whereis -b pkg-config | sed 's/pkg-config\: //g'` /opt/openwiz/toolchain/arm-openwiz-linux-gnu/bin/pkg-config
# Do not edit below here
CC="${OPEN2X}/bin/${HOST}-gcc"
CXX="${OPEN2X}/bin/${HOST}-g++"
AR="${OPEN2X}/bin/${HOST}-ar"
STRIP="${OPEN2X}/bin/${HOST}-strip"
RANLIB="${OPEN2X}/bin/${HOST}-ranlib"
CFLAGS="-DTARGET_GP2X_WIZ -O2 -ffast-math -fomit-frame-pointer -mcpu=arm920t -DARM -D_ARM_ASSEM_ -I${OPEN2X}/include -I${OPEN2X}/include/libxml2 -I${OPEN2X}/include/SDL"
LDFLAGS="-L${OPEN2X}/lib"
PKG_CONFIG="${OPEN2X}/bin/pkg-config"
export CC
export CXX
export AR
export STRIP
export RANLIB
export CFLAGS
export LDFLAGS
export PKG_CONFIG
echo Current settings.
echo
echo Install root/Working dir = $OPEN2X
echo Tool locations = $OPEN2X/bin
echo Host/Target = $HOST / $TARGET
echo
echo CC = $CC
echo CXX = $CXX
echo AR = $AR
echo STRIP = $STRIP
echo RANLIB = $RANLIB
echo CFLAGS = $CFLAGS
echo LDFLAGS = $LDFLAGS
echo PKG_CONFIG = $PKG_CONFIG
#cd vendor/des-4.04b; make -f Makefile.openwiz clean all install; cd -
#cd core; ./configure --prefix=${PREFIX} --target=${TARGET} --host=${HOST} --build=${BUILD} --enable-shared ; make -f Makefile; cd -
echo ""
echo "Now do:"
echo "cd project"
echo './configure --prefix=${PREFIX} --target=${TARGET} --host=${HOST} --build=${BUILD} --enable-shared'
Aparte de eso no he cambiado ni una sóla línea de ningún código o fichero, y os digo, me funcionan ambos en mi negrita, pero eso, cuando puede, se acelera muchísimo, es la única consecuencia de usar los timers de WIZ (lo supongo, porque tengo en los CFLAGS la constante -DTARGET_GP2X_WIZ).