# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-libs/boost/boost-1.48.0-r1.ebuild,v 1.3 2012/02/14 19:57:04 hwoarang Exp $

EAPI="4"
PYTHON_DEPEND="python? *"
SUPPORT_PYTHON_ABIS="1"
RESTRICT_PYTHON_ABIS="*-jython *-pypy-*"

inherit check-reqs flag-o-matic multilib python toolchain-funcs versionator

MY_P=${PN}_$(replace_all_version_separators _)

DESCRIPTION="Boost Libraries for C++"
HOMEPAGE="http://www.boost.org/"
SRC_URI="mirror://sourceforge/boost/${MY_P}.tar.bz2"

LICENSE="Boost-1.0"
SLOT="$(get_version_component_range 1-2)"
KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd"
IUSE="debug doc +eselect icu mpi python static-libs test tools"

RDEPEND="icu? ( >=dev-libs/icu-3.3 )
	mpi? ( || ( sys-cluster/openmpi[cxx] sys-cluster/mpich2[cxx,threads] ) )
	sys-libs/zlib
	!!<=dev-libs/boost-1.35.0-r2
	>=app-admin/eselect-boost-0.3"
DEPEND="${RDEPEND}
	>=dev-util/boost-build-1.48.0-r1:${SLOT}"

S=${WORKDIR}/${MY_P}

MAJOR_PV=$(replace_all_version_separators _ ${SLOT})
BJAM="b2-${MAJOR_PV}"

# Usage:
# _add_line <line-to-add> <profile>
# ... to add to specific profile
# or
# _add_line <line-to-add>
# ... to add to all profiles for which the use flag set

_add_line() {
	if [[ -z "$2" ]]; then
		echo "${1}" >> "${D}usr/share/boost-eselect/profiles/${SLOT}/default"
		if use debug; then
			echo "${1}" >> "${D}usr/share/boost-eselect/profiles/${SLOT}/debug"
		fi
	else
		echo "${1}" >> "${D}usr/share/boost-eselect/profiles/${SLOT}/${2}"
	fi
}

create_user-config.jam() {
	local compiler compiler_version compiler_executable

	if [[ ${CHOST} == *-darwin* ]]; then
		compiler="darwin"
		compiler_version="$(gcc-fullversion)"
		compiler_executable="$(tc-getCXX)"
	else
		compiler="gcc"
		compiler_version="$(gcc-version)"
		compiler_executable="$(tc-getCXX)"
	fi
	local mpi_configuration python_configuration

	if use mpi; then
		mpi_configuration="using mpi ;"
	fi

	if use python; then
		python_configuration="using python : $(python_get_version) : /usr : $(python_get_includedir) : /usr/$(get_libdir) ;"
	fi

	# The debug-symbols=none and optimization=none are not official upstream flags but a Gentoo
	# specific patch to make sure that all our CFLAGS/CXXFLAGS/LDFLAGS are being respected.
	# Using optimization=off would for example add "-O0" and override "-O2" set by the user.
	# Please take a look at the boost-build ebuild for more information.
	cat > user-config.jam << __EOF__
variant gentoorelease : release : <optimization>none <debug-symbols>none ;
variant gentoodebug : debug : <optimization>none ;

using ${compiler} : ${compiler_version} : ${compiler_executable} : <cflags>"${CFLAGS}" <cxxflags>"${CXXFLAGS}" <linkflags>"${LDFLAGS}" ;
${mpi_configuration}
${python_configuration}
__EOF__
}

pkg_pretend() {
	if use test; then
		CHECKREQS_DISK_BUILD="15G" check-reqs_pkg_pretend

		ewarn "The tests may take several hours on a recent machine"
		ewarn "but they will not fail (unless something weird happens ;-)"
		ewarn "This is because the tests depend on the used compiler/-version"
		ewarn "and the platform and upstream says that this is normal."
		ewarn "If you are interested in the results, please take a look at the"
		ewarn "generated results page:"
		ewarn "  ${ROOT}usr/share/doc/${PF}/status/cs-$(uname).html"
		ebeep 5
	fi
}

pkg_setup() {
	if use python; then
		python_pkg_setup
	fi

	if use debug; then
		ewarn "The debug USE flag means that a second set of the boost libraries"
		ewarn "will be built containing debug symbols. You'll be able to select them"
		ewarn "using the boost-eselect module. But even though the optimization flags"
		ewarn "you might have set are not stripped, there will be a performance"
		ewarn "penalty and linking other packages against the debug version"
		ewarn "of boost is _not_ recommended."
	fi
}

src_prepare() {
	epatch "${FILESDIR}/${P}-mpi_python3.patch"
	epatch "${FILESDIR}/${P}-respect_python-buildid.patch"
	epatch "${FILESDIR}/${P}-support_dots_in_python-buildid.patch"
	epatch "${FILESDIR}/${P}-no_strict_aliasing_python2.patch"
	epatch "${FILESDIR}/${P}-disable_libboost_python3.patch"
	epatch "${FILESDIR}/${P}-python_linking.patch"
	epatch "${FILESDIR}/${P}-disable_icu_rpath.patch"
	epatch "${FILESDIR}/${P}-dont_use_fchmodat.patch"
	epatch "${FILESDIR}/remove-toolset-${PV}.patch"

	# This enables building the boost.random library with /dev/urandom support
	if [[ -e /dev/urandom ]]; then
		mkdir -p libs/random/build || die
		cp "${FILESDIR}/random-Jamfile-${PV}" libs/random/build/Jamfile.v2 || die
	fi
}

src_configure() {
	OPTIONS=""

	if [[ ${CHOST} == *-darwin* ]]; then
		# We need to add the prefix, and in two cases this exceeds, so prepare
		# for the largest possible space allocation.
		append-ldflags -Wl,-headerpad_max_install_names
	fi

	# bug 298489
	if use ppc || use ppc64; then
		[[ $(gcc-version) > 4.3 ]] && append-flags -mno-altivec
	fi

	use icu && OPTIONS+=" -sICU_PATH=/usr"
	use icu || OPTIONS+=" --disable-icu"
	use mpi || OPTIONS+=" --without-mpi"
	use python || OPTIONS+=" --without-python"

	# https://svn.boost.org/trac/boost/attachment/ticket/2597/add-disable-long-double.patch
	if use sparc || { use mips && [[ ${ABI} = "o32" ]]; } || use hppa || use arm || use x86-fbsd || use sh; then
		OPTIONS+=" --disable-long-double"
	fi

	OPTIONS+=" pch=off --boost-build=/usr/share/boost-build-${MAJOR_PV} --prefix=\"${D}usr\" --layout=versioned"

	if use static-libs; then
		LINK_OPTS="link=shared,static"
		LIBRARY_TARGETS="*.a *$(get_libname)"
	else
		LINK_OPTS="link=shared"
		# There is no dynamically linked version of libboost_test_exec_monitor and libboost_exception.
		LIBRARY_TARGETS="libboost_test_exec_monitor*.a libboost_exception*.a *$(get_libname)"
	fi
}

src_compile() {
	local jobs
	jobs=$( echo " ${MAKEOPTS} " | \
		sed -e 's/ --jobs[= ]/ -j /g' \
			-e 's/ -j \([1-9][0-9]*\)/ -j\1/g' \
			-e 's/ -j\>/ -j1/g' | \
			( while read -d ' ' j; do if [[ "${j#-j}" = "$j" ]]; then continue; fi; jobs="${j#-j}"; done; echo ${jobs} ) )
	if [[ "${jobs}" != "" ]]; then NUMJOBS="-j"${jobs}; fi

	export BOOST_ROOT="${S}"
	PYTHON_DIRS=""
	MPI_PYTHON_MODULE=""

	building() {
		create_user-config.jam

		einfo "Using the following command to build:"
		einfo "${BJAM} ${NUMJOBS} -q -d+2 gentoorelease --user-config=user-config.jam ${OPTIONS} threading=single,multi ${LINK_OPTS} runtime-link=shared $(use python && echo --python-buildid=${PYTHON_ABI})"

		${BJAM} ${NUMJOBS} -q -d+2 \
			gentoorelease \
			--user-config=user-config.jam \
			${OPTIONS} \
			threading=single,multi ${LINK_OPTS} runtime-link=shared \
			$(use python && echo --python-buildid=${PYTHON_ABI}) \
			|| die "Building of Boost libraries failed"

		# ... and do the whole thing one more time to get the debug libs
		if use debug; then
			einfo "Using the following command to build:"
			einfo "${BJAM} ${NUMJOBS} -q -d+2 gentoodebug --user-config=user-config.jam ${OPTIONS} threading=single,multi ${LINK_OPTS} runtime-link=shared --buildid=debug $(use python && echo --python-buildid=${PYTHON_ABI})"

			${BJAM} ${NUMJOBS} -q -d+2 \
				gentoodebug \
				--user-config=user-config.jam \
				${OPTIONS} \
				threading=single,multi ${LINK_OPTS} runtime-link=shared \
				--buildid=debug \
				$(use python && echo --python-buildid=${PYTHON_ABI}) \
				|| die "Building of Boost debug libraries failed"
		fi

		if use python; then
			if [[ -z "${PYTHON_DIRS}" ]]; then
				PYTHON_DIRS="$(find bin.v2/libs -name python | sort)"
			else
				if [[ "${PYTHON_DIRS}" != "$(find bin.v2/libs -name python | sort)" ]]; then
					die "Inconsistent structure of build directories"
				fi
			fi

			local dir
			for dir in ${PYTHON_DIRS}; do
				mv ${dir} ${dir}-${PYTHON_ABI} || die "Renaming of '${dir}' to '${dir}-${PYTHON_ABI}' failed"
			done

			if use mpi; then
				if [[ -z "${MPI_PYTHON_MODULE}" ]]; then
					MPI_PYTHON_MODULE="$(find bin.v2/libs/mpi/build/*/gentoorelease -name mpi.so)"
					if [[ "$(echo "${MPI_PYTHON_MODULE}" | wc -l)" -ne 1 ]]; then
						die "Multiple mpi.so files found"
					fi
				else
					if [[ "${MPI_PYTHON_MODULE}" != "$(find bin.v2/libs/mpi/build/*/gentoorelease -name mpi.so)" ]]; then
						die "Inconsistent structure of build directories"
					fi
				fi

				mv stage/lib/mpi.so stage/lib/mpi.so-${PYTHON_ABI} || die "Renaming of 'stage/lib/mpi.so' to 'stage/lib/mpi.so-${PYTHON_ABI}' failed"
			fi
		fi
	}
	if use python; then
		python_execute_function building
	else
		building
	fi

	if use tools; then
		pushd tools > /dev/null || die
		einfo "Using the following command to build the tools:"
		einfo "${BJAM} ${NUMJOBS} -q -d+2 gentoorelease --user-config=../user-config.jam ${OPTIONS}"

		${BJAM} ${NUMJOBS} -q -d+2\
			gentoorelease \
			--user-config=../user-config.jam \
			${OPTIONS} \
			|| die "Building of Boost tools failed"
		popd > /dev/null || die
	fi
}

src_install () {
	dodir /usr/share/boost-eselect/profiles/${SLOT}
	touch "${D}usr/share/boost-eselect/profiles/${SLOT}/default" || die
	if use debug; then
		 touch "${D}usr/share/boost-eselect/profiles/${SLOT}/debug" || die
	fi

	if use mpi && use python; then
		_add_line "python=\""
	fi

	installation() {
		create_user-config.jam

		if use python; then
			local dir
			for dir in ${PYTHON_DIRS}; do
				cp -pr ${dir}-${PYTHON_ABI} ${dir} || die "Copying of '${dir}-${PYTHON_ABI}' to '${dir}' failed"
			done

			if use mpi; then
				cp -p stage/lib/mpi.so-${PYTHON_ABI} "${MPI_PYTHON_MODULE}" || die "Copying of 'stage/lib/mpi.so-${PYTHON_ABI}' to '${MPI_PYTHON_MODULE}' failed"
				cp -p stage/lib/mpi.so-${PYTHON_ABI} stage/lib/mpi.so || die "Copying of 'stage/lib/mpi.so-${PYTHON_ABI}' to 'stage/lib/mpi.so' failed"
			fi
		fi

		einfo "Using the following command to install:"
		einfo "${BJAM} -q -d+2 gentoorelease --user-config=user-config.jam ${OPTIONS} threading=single,multi ${LINK_OPTS} runtime-link=shared --includedir=\"${D}usr/include\" --libdir=\"${D}usr/$(get_libdir)\" $(use python && echo --python-buildid=${PYTHON_ABI}) install"

		${BJAM} -q -d+2 \
			gentoorelease \
			--user-config=user-config.jam \
			${OPTIONS} \
			threading=single,multi ${LINK_OPTS} runtime-link=shared \
			--includedir="${D}usr/include" \
			--libdir="${D}usr/$(get_libdir)" \
			$(use python && echo --python-buildid=${PYTHON_ABI}) \
			install || die "Installation of Boost libraries failed"

		if use debug; then
			einfo "Using the following command to install:"
			einfo "${BJAM} -q -d+2 gentoodebug --user-config=user-config.jam ${OPTIONS} threading=single,multi ${LINK_OPTS} runtime-link=shared --includedir=\"${D}usr/include\" --libdir=\"${D}usr/$(get_libdir)\" --buildid=debug $(use python && echo --python-buildid=${PYTHON_ABI})"

			${BJAM} -q -d+2 \
				gentoodebug \
				--user-config=user-config.jam \
				${OPTIONS} \
				threading=single,multi ${LINK_OPTS} runtime-link=shared \
				--includedir="${D}usr/include" \
				--libdir="${D}usr/$(get_libdir)" \
				--buildid=debug \
				$(use python && echo --python-buildid=${PYTHON_ABI}) \
				install || die "Installation of Boost debug libraries failed"
		fi

		if use python; then
			rm -r ${PYTHON_DIRS} || die

			# Move mpi.so Python module to Python site-packages directory and make sure it is slotted.
			if use mpi; then
				mkdir -p "${D}$(python_get_sitedir)/boost_${MAJOR_PV}" || die
				mv "${D}usr/$(get_libdir)/mpi.so" "${D}$(python_get_sitedir)/boost_${MAJOR_PV}" || die
				touch "${D}$(python_get_sitedir)/boost_${MAJOR_PV}/__init__.py" || die
				_add_line "$(python_get_sitedir)/boost_${MAJOR_PV}/mpi.so"
			fi
		fi
	}
	if use python; then
		python_execute_function installation
	else
		installation
	fi

	if use mpi && use python; then
		_add_line "\""
	fi

	use python || rm -rf "${D}usr/include/boost-${MAJOR_PV}/boost"/python* || die

	if use doc; then
		find libs/*/* -iname "test" -or -iname "src" | xargs rm -rf
		dohtml \
			-A pdf,txt,cpp,hpp \
			*.{htm,html,png,css} \
			-r doc
		dohtml \
			-A pdf,txt \
			-r tools
		insinto /usr/share/doc/${PF}/html
		doins -r libs
		doins -r more

		# To avoid broken links
		insinto /usr/share/doc/${PF}/html
		doins LICENSE_1_0.txt

		dosym /usr/include/boost-${MAJOR_PV}/boost /usr/share/doc/${PF}/html/boost
	fi

	pushd "${D}usr/$(get_libdir)" > /dev/null || die

	# Remove (unversioned) symlinks
	# And check for what we remove to catch bugs
	# got a better idea how to do it? tell me!
	local f
	for f in $(ls -1 ${LIBRARY_TARGETS} | grep -v "${MAJOR_PV}"); do
		if [[ ! -h "${f}" ]]; then
			eerror "Tried to remove '${f}' which is a regular file instead of a symlink"
			die "Slotting/naming of the libraries broken!"
		fi
		rm "${f}" || die
	done

	# The threading libs obviously always gets the "-mt" (multithreading) tag
	# some packages seem to have a problem with it. Creating symlinks...

	if use static-libs; then
		THREAD_LIBS="libboost_thread-mt-${MAJOR_PV}.a libboost_thread-mt-${MAJOR_PV}$(get_libname)"
	else
		THREAD_LIBS="libboost_thread-mt-${MAJOR_PV}$(get_libname)"
	fi
	local lib
	for lib in ${THREAD_LIBS}; do
		dosym ${lib} "/usr/$(get_libdir)/$(sed -e 's/-mt//' <<< ${lib})"
	done

	# The same goes for the mpi libs
	if use mpi; then
		if use static-libs; then
			MPI_LIBS="libboost_mpi-mt-${MAJOR_PV}.a libboost_mpi-mt-${MAJOR_PV}$(get_libname)"
		else
			MPI_LIBS="libboost_mpi-mt-${MAJOR_PV}$(get_libname)"
		fi
		local lib
		for lib in ${MPI_LIBS}; do
			dosym ${lib} "/usr/$(get_libdir)/$(sed -e 's/-mt//' <<< ${lib})"
		done
	fi

	if use debug; then
		if use static-libs; then
			THREAD_DEBUG_LIBS="libboost_thread-mt-${MAJOR_PV}-debug$(get_libname) libboost_thread-mt-${MAJOR_PV}-debug.a"
		else
			THREAD_DEBUG_LIBS="libboost_thread-mt-${MAJOR_PV}-debug$(get_libname)"
		fi

		local lib
		for lib in ${THREAD_DEBUG_LIBS}; do
			dosym ${lib} "/usr/$(get_libdir)/$(sed -e 's/-mt//' <<< ${lib})"
		done

		if use mpi; then
			if use static-libs; then
				MPI_DEBUG_LIBS="libboost_mpi-mt-${MAJOR_PV}-debug.a libboost_mpi-mt-${MAJOR_PV}-debug$(get_libname)"
			else
				MPI_DEBUG_LIBS="libboost_mpi-mt-${MAJOR_PV}-debug$(get_libname)"
			fi

			local lib
			for lib in ${MPI_DEBUG_LIBS}; do
				dosym ${lib} "/usr/$(get_libdir)/$(sed -e 's/-mt//' <<< ${lib})"
			done
		fi
	fi

	# Create a subdirectory with completely unversioned symlinks
	# and store the names in the profiles-file for eselect
	dodir /usr/$(get_libdir)/boost-${MAJOR_PV}

	_add_line "libs=\"" default
	local f
	for f in $(ls -1 ${LIBRARY_TARGETS} | grep -v debug); do
		dosym ../${f} /usr/$(get_libdir)/boost-${MAJOR_PV}/${f/-${MAJOR_PV}}
		_add_line "/usr/$(get_libdir)/${f}" default
	done
	_add_line "\"" default

	if use debug; then
		_add_line "libs=\"" debug
		dodir /usr/$(get_libdir)/boost-${MAJOR_PV}-debug
		local f
		for f in $(ls -1 ${LIBRARY_TARGETS} | grep debug); do
			dosym ../${f} /usr/$(get_libdir)/boost-${MAJOR_PV}-debug/${f/-${MAJOR_PV}-debug}
			_add_line "/usr/$(get_libdir)/${f}" debug
		done
		_add_line "\"" debug

		_add_line "includes=\"/usr/include/boost-${MAJOR_PV}/boost\"" debug
		_add_line "suffix=\"-debug\"" debug
	fi

	_add_line "includes=\"/usr/include/boost-${MAJOR_PV}/boost\"" default

	popd > /dev/null || die

	if use tools; then
		pushd dist/bin > /dev/null || die
		# Append version postfix to binaries for slotting
		_add_line "bins=\""
		local b
		for b in *; do
			newbin "${b}" "${b}-${MAJOR_PV}"
			_add_line "/usr/bin/${b}-${MAJOR_PV}"
		done
		_add_line "\""
		popd > /dev/null || die

		pushd dist > /dev/null || die
		insinto /usr/share
		doins -r share/boostbook
		# Append version postfix for slotting
		mv "${D}usr/share/boostbook" "${D}usr/share/boostbook-${MAJOR_PV}" || die
		_add_line "dirs=\"/usr/share/boostbook-${MAJOR_PV}\""
		popd > /dev/null || die
	fi

	pushd status > /dev/null || die
	if [[ -f regress.log ]]; then
		docinto status
		dohtml *.html ../boost.png
		dodoc regress.log
	fi
	popd > /dev/null || die

	# boost's build system truely sucks for not having a destdir.  Because for
	# this reason we are forced to build with a prefix that includes the
	# DESTROOT, dynamic libraries on Darwin end messed up, referencing the
	# DESTROOT instread of the actual EPREFIX.  There is no way out of here
	# but to do it the dirty way of manually setting the right install_names.
	if [[ ${CHOST} == *-darwin* ]]; then
		einfo "Working around completely broken build-system(tm)"
		local d
		for d in "${ED}"usr/lib/*.dylib; do
			if [[ -f ${d} ]]; then
				# fix the "soname"
				ebegin "  correcting install_name of ${d#${ED}}"
				install_name_tool -id "/${d#${D}}" "${d}"
				eend $?
				# fix references to other libs
				refs=$(otool -XL "${d}" | \
					sed -e '1d' -e 's/^\t//' | \
					grep "^libboost_" | \
					cut -f1 -d' ')
				local r
				for r in ${refs}; do
					ebegin "    correcting reference to ${r}"
					install_name_tool -change \
						"${r}" \
						"${EPREFIX}/usr/lib/${r}" \
						"${d}"
					eend $?
				done
			fi
		done
	fi
}

src_test() {
	testing() {
		if use python; then
			local dir
			for dir in ${PYTHON_DIRS}; do
				cp -pr ${dir}-${PYTHON_ABI} ${dir} || die "Copying of '${dir}-${PYTHON_ABI}' to '${dir}' failed"
			done

			if use mpi; then
				cp -p stage/lib/mpi.so-${PYTHON_ABI} "${MPI_PYTHON_MODULE}" || die "Copying of 'stage/lib/mpi.so-${PYTHON_ABI}' to '${MPI_PYTHON_MODULE}' failed"
				cp -p stage/lib/mpi.so-${PYTHON_ABI} stage/lib/mpi.so || die "Copying of 'stage/lib/mpi.so-${PYTHON_ABI}' to 'stage/lib/mpi.so' failed"
			fi
		fi

		pushd tools/regression/build > /dev/null || die
		einfo "Using the following command to build test helpers:"
		einfo "${BJAM} -q -d+2 gentoorelease --user-config=../../../user-config.jam ${OPTIONS} process_jam_log compiler_status"

		${BJAM} -q -d+2 \
			gentoorelease \
			--user-config=../../../user-config.jam \
			${OPTIONS} \
			process_jam_log compiler_status \
			|| die "Building of regression test helpers failed"

		popd > /dev/null || die
		pushd status > /dev/null || die

		# Some of the test-checks seem to rely on regexps
		export LC_ALL="C"

		# The following is largely taken from tools/regression/run_tests.sh,
		# but adapted to our needs.

		# Run the tests & write them into a file for postprocessing
		einfo "Using the following command to test:"
		einfo "${BJAM} --user-config=../user-config.jam ${OPTIONS} --dump-tests"

		${BJAM} \
			--user-config=../user-config.jam \
			${OPTIONS} \
			--dump-tests 2>&1 | tee regress.log || die

		# Postprocessing
		cat regress.log | tools/regression/build/bin/gcc-$(gcc-version)/gentoorelease/pch-off/process_jam_log --v2
		if test $? != 0; then
			die "Postprocessing the build log failed"
		fi

		cat > comment.html <<- __EOF__
		<p>Tests are run on a <a href="http://www.gentoo.org">Gentoo</a> system.</p>
__EOF__

		# Generate the build log html summary page
		tools/regression/build/bin/gcc-$(gcc-version)/gentoorelease/pch-off/compiler_status --v2 \
			--comment comment.html .. \
			cs-$(uname).html cs-$(uname)-links.html
		if test $? != 0; then
			die "Generating the build log html summary page failed"
		fi

		# And do some cosmetic fixes :)
		sed -i -e 's|http://www.boost.org/boost.png|boost.png|' *.html || die

		popd > /dev/null || die

		if use python; then
			rm -r ${PYTHON_DIRS} || die
		fi
	}
	if use python; then
		python_execute_function -f -q testing
	else
		testing
	fi
}

pkg_postinst() {
	if use eselect; then
		eselect boost update || ewarn "eselect boost update failed."
	fi

	if [[ ! -h "${ROOT}etc/eselect/boost/active" ]]; then
		elog "No active boost version found. Calling eselect to select one..."
		eselect boost update || ewarn "eselect boost update failed."
	fi
}