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|
#!/bin/sh
# simple risu configure script - Claudio Fontana
# Locate the directory where this configure script is
SRCDIR="$(cd "$(dirname "$0")"; pwd)"
tmp_dir=`mktemp -d -t risu_configure_check_XXXXXX`
compile() {
$CC $CFLAGS -c -o ${1}.o ${1}.c 2>/dev/null
}
check_define() {
c=${tmp_dir}/check_define_${1}
cat > ${c}.c <<EOF
#if !defined($1)
#error $1 not defined
#endif
int main(void) { return 0; }
EOF
compile $c
}
guess_arch() {
if check_define __m68k__ ; then
ARCH="m68k"
elif check_define __arm__ ; then
ARCH="arm"
elif check_define __aarch64__ ; then
ARCH="aarch64"
elif check_define __powerpc64__ ; then
if check_define __BIG_ENDIAN__; then
ARCH="ppc64"
else
ARCH="ppc64le"
fi
else
echo "This cpu is not supported by risu. Try -h. " >&2
exit 1
fi
}
generate_makefilein() {
m=Makefile.in
echo "generating Makefile.in..."
echo "# Makefile.in - generated by the 'configure' script" > $m
echo "ARCH:=${ARCH}" >> $m
echo "CC:=${CC}" >> $m
echo "AS:=${AS}" >> $m
echo "OBJCOPY:=${OBJCOPY}" >> $m
echo "OBJDUMP:=${OBJDUMP}" >> $m
echo "STATIC:=${STATIC}" >> $m
echo "SRCDIR:=${SRCDIR}" >> $m
echo "...done"
}
usage() {
cat <<EOF
Usage: [VAR=VALUE]... ./configure [-h|--help] [-s|--static]
-s/--static - force a static build of risu
To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE. See below for descriptions of some of the useful variables.
Some influential environment variables:
CROSS_PREFIX cross-compiler prefix, defaults to gcc and other tools
prefixed with the given string.
ARCH force target architecture instead of trying to detect it.
Valid values=[arm|aarch64|ppc64|ppc64le|m68k]
CC C compiler command
CFLAGS C compiler flags
CPPFLAGS C preprocessor flags, e.g. -I<include dir>
AS assembler command
OBJCOPY object copy utility command
OBJDUMP object dump utility command
EOF
}
# STARTUP: entry point
STATIC=""
for opt do
case "$opt" in
--help | -h)
usage;
exit 0;;
--static | -s)
STATIC="-static"
;;
esac
done
CC="${CC-${CROSS_PREFIX}gcc}"
AS="${AS-${CROSS_PREFIX}as}"
OBJCOPY="${OBJCOPY-${CROSS_PREFIX}objcopy}"
OBJDUMP="${OBJDUMP-${CROSS_PREFIX}objdump}"
if test "x${ARCH}" = "x"; then
guess_arch
fi
generate_makefilein
# Are we in a separate build tree? If so, link the Makefile
# so that 'make' works.
if test ! -e Makefile; then
echo "linking Makefile..."
ln -s "${SRCDIR}/Makefile" .
fi
echo "type 'make' to start the build"
exit 0
|
