# Template build file for 'cross-i686-pc-linux-gnu'
#
_binutils_version=2.23.1
_gcc_version=4.7.2
_glibc_version=2.17
_gmp_version=5.0.5
_mpfr_version=3.1.1
_mpc_version=0.9
_linux_version=3.7.1

_triplet=i686-pc-linux-gnu
_archflags="-march=i686 -mtune=generic"

pkgname=cross-${_triplet}
version=0.8
revision=1
short_desc="GNU Cross toolchain for the ${_triplet} target (binutils/gcc/glibc)"
maintainer="Juan RP <xtraeme@gmail.org>"
homepage="http://www.voidlinux.eu"
license="Public Domain"
distfiles="
 http://ftp.gnu.org/pub/gnu/binutils/binutils-${_binutils_version}.tar.bz2
 http://ftp.gnu.org/pub/gnu/gcc/gcc-${_gcc_version}/gcc-${_gcc_version}.tar.bz2
 http://ftp.gnu.org/gnu/glibc/glibc-${_glibc_version}.tar.xz
 http://mirrors.kernel.org/gnu/gmp/gmp-${_gmp_version}.tar.bz2
 http://www.mpfr.org/mpfr-current/mpfr-${_mpfr_version}.tar.bz2
 http://www.multiprecision.org/mpc/download/mpc-${_mpc_version}.tar.gz
 http://www.kernel.org/pub/linux/kernel/v3.x/linux-${_linux_version}.tar.xz"
checksum="
 2ab2e5b03e086d12c6295f831adad46b3e1410a3a234933a2e8fac66cb2e7a19
 8a9283d7010fb9fe5ece3ca507e0af5c19412626384f8a5e9434251ae100b084
 6914e337401e0e0ade23694e1b2c52a5f09e4eda3270c67e7c3ba93a89b5b23e
 1f588aaccc41bb9aed946f9fe38521c26d8b290d003c5df807f65690f2aadec9
 7b66c3f13dc8385f08264c805853f3e1a8eedab8071d582f3e661971c9acd5fd
 fd3efe422f0d454592059e80f2c00d1a2e381bf2beda424c5094abd4deb049ac
 e1ca8b8376ebdf797357f5f1734ed6eed3cadc16c32d280a780f150372de7255"

create_wrksrc=yes
disable_debug=yes
nostrip_files="libgcc.a libgcov.a libgcc_eh.a"
subpackages="${pkgname}-libc"
makedepends="perl flex gmp-devel mpc-devel cloog-ppl-devel"
depends="${pkgname}-libc-${version}_${revision}"

_CROSS_TARGET=${_triplet}
_CROSS_SYSROOT="/usr/${_CROSS_TARGET}"

_binutils_build() {
	[ -f ${wrksrc}/.binutils_build_done ] && return 0

	cd ${wrksrc}/binutils-${_binutils_version}

	msg_normal "Building cross binutils bootstrap\n"

	[ ! -d ../binutils-build ] && mkdir ../binutils-build
	cd ../binutils-build

	../binutils-${_binutils_version}/configure \
		--prefix=/usr --target=${_CROSS_TARGET} \
		--with-sysroot=${_CROSS_SYSROOT} \
		--disable-nls --disable-multilib --disable-werror \
		--disable-shared ${_fpuflags}

	make configure-host && make ${makejobs}
	make install

	touch ${wrksrc}/.binutils_build_done
}

_gcc_bootstrap() {
	[ -f ${wrksrc}/.gcc_bootstrap_done ] && return 0

	cd ${wrksrc}/gcc-${_gcc_version}

	msg_normal "Building cross gcc bootstrap\n"

	[ ! -d ../gcc-bootstrap ] && mkdir ../gcc-bootstrap
	cd ../gcc-bootstrap

	if [ ! -d ${wrksrc}/gcc-${_gcc_version}/gmp ]; then
		mv ${wrksrc}/gmp-${_gmp_version} ${wrksrc}/gcc-${_gcc_version}/gmp
	fi
	if [ ! -d ${wrksrc}/gcc-${_gcc_version}/mpfr ]; then
		mv ${wrksrc}/mpfr-${_mpfr_version} ${wrksrc}/gcc-${_gcc_version}/mpfr
	fi
	if [ ! -d ${wrksrc}/gcc-${_gcc_version}/mpc ]; then
		mv ${wrksrc}/mpc-${_mpc_version} ${wrksrc}/gcc-${_gcc_version}/mpc
	fi
 
	../gcc-${_gcc_version}/configure --prefix=/usr \
		--target=${_CROSS_TARGET} --with-newlib \
		--with-sysroot=${_CROSS_SYSROOT} \
		--disable-nls --disable-shared --disable-multilib \
		--disable-decimal-float --disable-libgomp --disable-libmudflap \
		--disable-libquadmath --disable-libssp --disable-threads \
		--enable-languages=c ${_fpuflags}

	make ${makejobs}
	make install

	touch ${wrksrc}/.gcc_bootstrap_done
}

_linux_headers() {
	[ -f ${wrksrc}/.linux_build_done ] && return 0

	cd ${wrksrc}
	msg_normal "Building Linux API headers for x86\n"

	cd linux-${_linux_version}

	make ARCH=x86 headers_check
	make ARCH=x86 INSTALL_HDR_PATH=${_CROSS_SYSROOT}/usr headers_install

	touch ${wrksrc}/.linux_build_done
}

_glibc_headers() {
	[ -f ${wrksrc}/.glibc_headers_done ] && return 0

	cd ${wrksrc}
	msg_normal "Building cross glibc headers\n"

	[ ! -d glibc-headers ] && mkdir glibc-headers
	cd glibc-headers

	echo "libc_cv_forced_unwind=yes" > config.cache
	echo "libc_cv_c_cleanup=yes" >> config.cache
	echo "libc_cv_ssp=no" >> config.cache

	export CC="${_CROSS_TARGET}-gcc" LD="${_CROSS_TARGET}-ld" \
		AS="${_CROSS_TARGET}-as" CPP="${_CROSS_TARGET}-cpp"

	../glibc-${_glibc_version}/configure \
		--host=${_CROSS_TARGET} --prefix=/usr \
		--with-headers=${_CROSS_SYSROOT}/usr/include \
		--config-cache --enable-add-ons=nptl,ports \
		--enable-obsolete-rpc \
		--enable-kernel=2.6.27

	make -k install-headers cross_compiling=yes \
		install_root=${_CROSS_SYSROOT}

	touch ${wrksrc}/.glibc_headers_done
}

_glibc_build() {
	[ -f ${wrksrc}/.glibc_build_done ] && return 0

	cd ${wrksrc}
	msg_normal "Building cross glibc\n"

	[ ! -d glibc-build ] && mkdir glibc-build
	cd glibc-build

	echo "libc_cv_forced_unwind=yes" > config.cache
	echo "libc_cv_c_cleanup=yes" >> config.cache
	echo "libc_cv_ssp=no" >> config.cache

	export CC="${_CROSS_TARGET}-gcc" LD="${_CROSS_TARGET}-ld" \
		AS="${_CROSS_TARGET}-as" CPP="${_CROSS_TARGET}-cpp"
	export CFLAGS="-Os -pipe ${_archflags}"

	../glibc-${_glibc_version}/configure \
		--host=${_CROSS_TARGET} --prefix=/usr \
		--with-headers=${_CROSS_SYSROOT}/usr/include \
		--config-cache --enable-add-ons=nptl,ports \
		--enable-obsolete-rpc --disable-profile \
		--enable-kernel=2.6.27
	
	make ${makejobs}
	make install_root=${_CROSS_SYSROOT} install

	touch ${wrksrc}/.glibc_build_done
}

_gcc_build() {
	[ -f ${wrksrc}/.gcc_build_done ] && return 0

	cd ${wrksrc}
	msg_normal "Building cross gcc final\n"

	[ ! -d gcc-build ] && mkdir gcc-build
	cd gcc-build

	unset LD AS CPP
	export CC="gcc" CFLAGS="-Os -pipe"

        # Make this link to target libs.
	if [ ! -f .sed_subst_done ]; then
		sed -e "s, /lib/, ${_CROSS_SYSROOT}/lib/,g;s, /usr/lib/, ${_CROSS_SYSROOT}/usr/lib/,g" \
			-i ${_CROSS_SYSROOT}/lib/libc.so ${_CROSS_SYSROOT}/lib/libpthread.so
		touch .sed_subst_done
	fi

	../gcc-${_gcc_version}/configure \
		--target=${_CROSS_TARGET} --prefix=/usr \
		--with-sysroot=${_CROSS_SYSROOT} \
		--enable-languages=c,c++ \
		--disable-multilib --disable-nls --disable-libquadmath \
		--disable-libmudflap --enable-c99 --enable-shared \
		--enable-long-long --enable-threads=posix \
		--disable-libstdcxx-pch

	make ${makejobs}

	touch ${wrksrc}/.gcc_build_done
}

do_build() {
        # Ensure we use sane environment
	unset CC CXX CPP LD AS AR RANLIB OBJDUMP READELF NM
	unset CFLAGS CXXFLAGS CPPFLAGS LDFLAGS
	export CFLAGS="-Os" CXXFLAGS="-Os"

	for f in include lib libexec bin sbin; do
		if [ ! -d ${_CROSS_SYSROOT}/usr/${f} ]; then
			mkdir -p ${_CROSS_SYSROOT}/usr/${f}
		fi
		if [ ! -h ${_CROSS_SYSROOT}/${f} ]; then
			ln -sfr ${_CROSS_SYSROOT}/usr/${f} ${_CROSS_SYSROOT}/${f}
		fi
	done

	_binutils_build
	_gcc_bootstrap
	_linux_headers
	_glibc_headers
	_glibc_build
	_gcc_build
}

do_install() {
	for f in include lib libexec bin sbin; do
		if [ ! -d ${DESTDIR}/${_CROSS_SYSROOT}/usr/${f} ]; then
			mkdir -p ${DESTDIR}/${_CROSS_SYSROOT}/usr/${f}
		fi
		if [ ! -h ${DESTDIR}/${_CROSS_SYSROOT}/${f} ]; then
			ln -sfr ${DESTDIR}/${_CROSS_SYSROOT}/usr/${f} \
				${DESTDIR}/${_CROSS_SYSROOT}/${f}
		fi
	done

	# install cross binutils
	cd ${wrksrc}/binutils-build && make DESTDIR=${DESTDIR} install

	# install cross gcc
	cd ${wrksrc}/gcc-build && make DESTDIR=${DESTDIR} install

	# install linux API headers for MIPS
	cd ${wrksrc}/linux-${_linux_version} && \
		make ARCH=x86 INSTALL_HDR_PATH=${DESTDIR}/${_CROSS_SYSROOT}/usr \
		headers_install

	rm -f $(find ${DESTDIR}/${_CROSS_SYSROOT}/usr/include -name .install -or -name ..install.cmd)
	rm -rf ${DESTDIR}/${_CROSS_SYSROOT}/usr/include/drm

	# install glibc for target
	cd ${wrksrc}/glibc-build && \
		make install_root=${DESTDIR}/${_CROSS_SYSROOT} install install-headers

	# Remove unnecessary stuff
	rm -f ${DESTDIR}/usr/lib*/libiberty.a
	rm -rf ${DESTDIR}/usr/share
	rm -rf ${DESTDIR}/${_CROSS_SYSROOT}/{etc,var}
	rm -rf ${DESTDIR}/${_CROSS_SYSROOT}/usr/{sbin,share,libexec}
	rm -rf ${DESTDIR}/${_CROSS_SYSROOT}/usr/lib/gconv
	rm -f ${DESTDIR}/${_CROSS_SYSROOT}/libexec

	for f in sprof localedef gencat pldd sotruss tzselect iconv mtrace \
		catchsegv xtrace makedb pcprofiledump locale rpcgen getconf \
		getent ldd; do
		rm -f ${DESTDIR}/${_CROSS_SYSROOT}/usr/bin/${f}
	done
}

do_clean() {
	# Remove temporary stuff from masterdir
	rm -rf ${_CROSS_SYSROOT}
	rm -f /usr/bin/${_CROSS_TARGET}*
	rm -rf /usr/lib/gcc/${_CROSS_TARGET}
	rm -rf /usr/libexec/gcc/${_CROSS_TARGET}
}