#!/bin/sh

USE_MMX=1
USE_CSS=1
LESS_OPT=
PLATFORM_CFLAGS="-malign-loops=2 -malign-jumps=2 -malign-functions=2 -march=i486"
DEBUG=
OPTIMIZE=-O2
OPTIMIZE_less=-O
DEFINES=
CC=gcc

for ac_option
do
case "$ac_option" in
	--fixed-point)
		CC=g++
		DEFINES="$DEFINES -DUSE_FIXED_POINT"
		;;

	--lessopt)
		LESS_OPT=1
		;;

	--no-mmx)
		USE_MMX=0
		;;

	--no-css)
		USE_CSS=0
		;;

	--debug)
		DEBUG=-g
		;;

	--gcc-prefix=*)
		CROSS=${ac_option#--gcc-prefix=}
		PLATFORM_CFLAGS=""
		;;
	-h | --help | -help)
	cat << EOF
Options:
	--no-mmx           Compile libmpeg3 with no MMX support.
	--no-css           Compile libmpeg3 with no CSS support.
	--fixed-point      Compile libmpeg3 to use integers instead of floats.
	--debug            Compile libmpeg3 with debug support.
EOF
		exit 0
		;;

	*)
		;;
esac
done


echo "Configuring libmpeg3"

cat > global_config << EOF
# DO NOT EDIT.  EDIT ./configure INSTEAD AND RERUN IT.
EOF


if test -z "$CFLAGS"; then
	CF="$DEFINES $DEBUG -funroll-loops -fomit-frame-pointer $PLATFORM_CFLAGS"
	echo >> global_config "CFLAGS = $CF $OPTIMIZE"
	if test -z "$LESS_OPT"; then
	    echo >> global_config "CFLAGS_lessopt = $CF $OPTIMIZE_less"
	else
	    echo >> global_config "CFLAGS_lessopt = $CF $OPTIMIZE_less"
	fi
fi

cat >> global_config << EOF
CC = ${CROSS}$CC
AR = ${CROSS}ar
NASM = nasm
EOF

if [ ${USE_CSS} = 1 ]; then
cat >> global_config << EOF
CFLAGS += -DHAVE_CSS
EOF
fi

if [ ${USE_MMX} = 1 ]; then
cat >> global_config << EOF
CFLAGS += -DHAVE_MMX
MMXOBJS = \
	video/mmxidct.o \
	video/reconmmx.o
MMXOBJS2 = \
	mmxidct.o \
	reconmmx.o
EOF
fi




echo "done"