# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $
#
# Tavis Ormandy 2003 <taviso@sdf.lonestar.org>
#

DESCRIPTION="Compaq's enhanced C compiler for the ALPHA platform"
HOMEPAGE="http://www.support.compaq.com/alpha-tools"
#SRC_URI="ftp://ftp.compaq.com/pub/products/C-Cxx/linux/compaq_c_beta/ccc-6.5.6.002-1.alpha.rpm"
LICENSE="CCC"
SLOT="0"
# NOTE: ALPHA Only!
KEYWORDS="-* ~alpha"
IUSE="doc"
DEPEND="virtual/glibc
		sys-devel/gcc-config
		app-arch/rpm2targz
		dev-libs/libots
		dev-libs/libcpml"
S=${WORKDIR}/${P}
RELEASE="6.5.6.002-1"

src_unpack() {
	# convert rpm into tar archive
	ccc_rpm="ccc-${RELEASE}.alpha.rpm"
	if [ ! -f ${DISTDIR}/${ccc_rpm} ]; then
		eerror ""
		eerror "Please download ${ccc_rpm} from" 
		eerror "${HOMEPAGE}, and place it in"
		eerror "${DISTDIR}"
		eerror ""
		eerror "Then resart this emerge."
		eerror ""
		die "CCC Distribution (${ccc_rpm}) not found"
	else
		ebegin "Converting RPM Package to Tar Archive..."
		rpm2targz ${DISTDIR}/${ccc_rpm} || { 
			eend ${?} 
			die "Failed to Convert ${ccc_rpm}"
		}
		eend ${?}
		ebegin "Unpacking CCC Distribution..."
		tar -C ${WORKDIR} -zxf ${WORKDIR}/${ccc_rpm%*.rpm}.tar.gz || {
			eend ${?}
			die "Failed to Extract ${ccc_rpm%*.rpm}.tar.gz"
		}
		eend ${?}
		einfo "CCC Distribution Successfully Prepared for Portage."
		rm -f ${WORKDIR}/${ccc_rpm%*.rpm}.tar.gz
	fi
}

src_compile() {
	# remove unwanted documentation
	if [ ! "`use doc`" ]; then
		ebegin "Removing Unwanted Documentation (USE=\"-doc\" ?)..."
		rm -rf ${WORKDIR}/usr/doc || {
			eend 1
			ewarn "Documentation Removal Failed, Continuing..."
		}
		eend ${?}
	fi
	
	# fix up lib paths - bug #15719, comment 6
	ebegin "Fixing symlinks..."
	gcc_libs_path="`gcc-config --get-lib-path`"
	if [ ! -d ${gcc_libs_path} ]; then
		eend 1
		eerror "gcc-config Returned an Invalid Library Path"
		die "${gcc_libs_path} is not a Directory"
	else
		ln -fs ${gcc_libs_path}/crtbegin.o \
			${WORKDIR}/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/crtbegin.o
		ln -fs ${gcc_libs_path}/crtend.o \
			${WORKDIR}/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/crtend.o
		eend 0
	fi
	# add gcc-lib path to ccc's search path 
	# check man ccc for file format info.
	einfo "Configuring CCC to observe GCC Library Path..."
	echo -n "-L${gcc_libs_path}" > ${WORKDIR}/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/comp.config
	einfo "Configuring CCC to observe Common Include Paths..."
	echo " -SysIncDir /usr/lib/compaq/ccc-${RELEASE}/alpha-linux/include -SysIncDir /usr/include/linux" >> ${WORKDIR}/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/comp.config
	einfo "Additional Paths can be set by users using \$DEC_CC variable."
	
	# man pages are in the wrong place
	einfo "Reorganising man structure..."
	rm -rf ${WORKDIR}/usr/man
	mkdir ${WORKDIR}/usr/share
	mv ${WORKDIR}/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/man ${WORKDIR}/usr/share/man
	
	if [ "`use doc`" ]; then
		einfo "Reorganising Documentation structure..."
		mv ${WORKDIR}/usr/doc ${WORKDIR}/usr/share/
	fi
}

src_install() {
	# move files over
	mv ${WORKDIR}/usr ${D} || die "CCC Installation Failed"
	
	# prep manpages
	prepman ${D}/usr/share/man/man1/ccc.1
	prepman ${D}/usr/share/man/man8/protect_headers_setup.8
	prepalldocs
}

pkg_config () {
			# some information for users
			einfo
            ewarn "Ignore any errors about Compaq Testing..."
			einfo
            einfo "Attempting configuration of CCC..."
			echo
			echo '<------- Begin CCC configuration output ------->'
            # NOTE: _must_ hide distcc, ccache, etc during this step
            PATH=/bin:/usr/bin:/sbin:/usr/sbin \
                /usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/create-comp-config.sh \
                ccc-${RELEASE} ${gcc_libs_path}
			echo '<------- End CCC configuration output ------->'
			echo
			einfo
			einfo "CCC has been configured, you can now use it as usual."
			einfo
}

pkg_postinst () {
			einfo
			einfo "CCC has been merged successfully, the EULA"
			einfo "is available in                           "
			einfo
			einfo "/usr/lib/compaq/ccc-${RELEASE}/alpha-linux/bin/LICENSE.txt"
			if [  "`use doc`" ]; then
				einfo
				einfo "you can also view the compiler documentation"
				einfo "in /usr/share/doc/ccc-${RELEASE%*-1}"
			fi
			einfo
			ewarn
			ewarn "you _MUST_ now run:"
			ewarn "ebuild /var/db/pkg/dev-lang/${PF}/${PF}.ebuild config"
			ewarn "to complete the installation"
			ewarn
			einfo "Hopefullly soon we will get a ccc USE flag"
			einfo "on packages (or at least individual       "
			einfo "components) that can be successfully built"
			einfo "using this compiler, until then you will  "
			einfo "just have to experiment :)                "
			einfo
			einfo "Please report successes/failures with ccc "
			einfo "to http://bugs.gentoo.org so that the USE "
			einfo "flags can be updated.                     "
			einfo
}