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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI=5
inherit multilib eutils flag-o-matic pax-utils

#same order as http://www.sbcl.org/platform-table.html
BV_X86=1.0.58
BV_AMD64=1.1.18
BV_PPC=1.0.28
BV_SPARC=1.0.28
BV_ALPHA=1.0.28

DESCRIPTION="Steel Bank Common Lisp (SBCL) is an implementation of ANSI Common Lisp"
HOMEPAGE="http://sbcl.sourceforge.net/"
SRC_URI="mirror://sourceforge/sbcl/${P}-source.tar.bz2
	x86? ( mirror://sourceforge/sbcl/${PN}-${BV_X86}-x86-linux-binary.tar.bz2 )
	amd64? ( mirror://sourceforge/sbcl/${PN}-${BV_AMD64}-x86-64-linux-binary.tar.bz2 )
	ppc? ( mirror://sourceforge/sbcl/${PN}-${BV_PPC}-powerpc-linux-binary.tar.bz2 )
	sparc? ( mirror://sourceforge/sbcl/${PN}-${BV_SPARC}-sparc-linux-binary.tar.bz2 )
	alpha? ( mirror://sourceforge/sbcl/${PN}-${BV_ALPHA}-alpha-linux-binary.tar.bz2 )"

LICENSE="MIT"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~ppc ~sparc ~x86"
IUSE="debug doc source +threads +unicode pax_kernel zlib"

CDEPEND="=dev-lisp/asdf-3.0*:="
DEPEND="${CDEPEND}
		doc? ( sys-apps/texinfo >=media-gfx/graphviz-2.26.0 )
		pax_kernel? ( sys-apps/paxctl sys-apps/elfix )"
RDEPEND="${CDEPEND}
		elibc_glibc? ( >=sys-libs/glibc-2.6 )"

# Disable warnings about executable stacks, as this won't be fixed soon by upstream
QA_EXECSTACK="usr/bin/sbcl"

CONFIG="${S}/customize-target-features.lisp"
ENVD="${T}/50sbcl"

# Prevent ASDF from using the system libraries
CL_SOURCE_REGISTRY="(:source-registry :ignore-inherited-configuration)"
ASDF_OUTPUT_TRANSLATIONS="(:output-translations :ignore-inherited-configuration)"

usep() {
	use ${1} && echo "true" || echo "false"
}

sbcl_feature() {
	echo "$( [[ ${1} == "true" ]] && echo "(enable ${2})" || echo "(disable ${2})")" >> "${CONFIG}"
}

sbcl_apply_features() {
	sed 's/^X//' > "${CONFIG}" <<-'EOF'
	(lambda (list)
	X  (flet ((enable  (x) (pushnew x list))
	X         (disable (x) (setf list (remove x list))))
	EOF
	if use x86 || use amd64; then
		sbcl_feature "$(usep threads)" ":sb-thread"
	fi
	sbcl_feature "true" ":sb-ldb"
	sbcl_feature "false" ":sb-test"
	sbcl_feature "$(usep unicode)" ":sb-unicode"
	sbcl_feature "$(usep zlib)" ":sb-core-compression"
	sbcl_feature "$(usep debug)" ":sb-xref-for-internals"
	sed 's/^X//' >> "${CONFIG}" <<-'EOF'
	X    )
	X  list)
	EOF
	cat "${CONFIG}"
}

src_unpack() {
	unpack ${A}
	mv sbcl-*-linux sbcl-binary || die
	cd "${S}"
}

src_prepare() {
	epatch "${FILESDIR}"/gentoo-fix_install_man.patch
	epatch "${FILESDIR}"/gentoo-fix_linux-os-c.patch
	# bug #468482
	epatch "${FILESDIR}"/concurrency-test.patch
	# bug #486552
	epatch "${FILESDIR}"/bsd-sockets-test.patch
	# bug #577514
	epatch "${FILESDIR}"/sbcl-1.1.18-graphiz-2.38.patch

	# To make the hardened compiler NOT compile with -fPIE -pie
	if gcc-specs-pie ; then
		einfo "Disabling PIE..."
		epatch "${FILESDIR}"/${PN}-1.1.17-gentoo-fix_nopie_for_hardened_toolchain.patch
	fi

	# bug #526194
	sed -e "s@CFLAGS =@CFLAGS = ${CFLAGS}@" \
		-e "s@LINKFLAGS =@LINKFLAGS = ${LDFLAGS}@" \
		-i src/runtime/GNUmakefile || die

	cp /usr/share/common-lisp/source/asdf/build/asdf.lisp contrib/asdf/ || die

	use source && sed 's%"$(BUILD_ROOT)%$(MODULE).lisp "$(BUILD_ROOT)%' -i contrib/vanilla-module.mk

	# Some shells(such as dash) don't have "time" as builtin
	# and we don't want to DEPEND on sys-process/time
	sed "s,^time ,," -i make.sh || die
	sed "s,/lib,/$(get_libdir),g" -i install.sh || die
	# #define SBCL_HOME ...
	sed "s,/usr/local/lib,/usr/$(get_libdir),g" -i src/runtime/runtime.c || die

	# Avoid sandbox violation, bug #572478
	sed -i -e "/(sb-posix:rmdir /s%\"/\"%\"${WORKDIR}\"%" \
		contrib/sb-posix/posix-tests.lisp || die

	find . -type f -name .cvsignore -delete
}

src_configure() {
	# customizing SBCL version as per
	# http://sbcl.cvs.sourceforge.net/sbcl/sbcl/doc/PACKAGING-SBCL.txt?view=markup
	echo -e ";;; Auto-generated by Gentoo\n\"gentoo-${PR}\"" > branch-version.lisp-expr

	# applying customizations
	sbcl_apply_features
}

src_compile() {
	local bindir="${WORKDIR}"/sbcl-binary

	strip-unsupported-flags ; filter-flags -fomit-frame-pointer

	if host-is-pax ; then
		# To disable PaX on hardened systems
		pax-mark -mr "${bindir}"/src/runtime/sbcl

		# Hack to disable PaX on second GENESIS stage
		sed -i -e '/^echo \/\/doing warm init - compilation phase$/a\paxmark.sh -mr \.\/src\/runtime\/sbcl' \
			"${S}"/make-target-2.sh || die "Cannot disable PaX on second GENESIS runtime"
	fi

	# clear the environment to get rid of non-ASCII strings, see bug 174702
	# set HOME for paludis
	env - HOME="${T}" \
		CC="$(tc-getCC)" AS="$(tc-getAS)" LD="$(tc-getLD)" \
		CPPFLAGS="${CPPFLAGS}" CFLAGS="${CFLAGS}" ASFLAGS="${ASFLAGS}" LDFLAGS="${LDFLAGS}" \
		GNUMAKE=make ./make.sh \
		"sh ${bindir}/run-sbcl.sh --no-sysinit --no-userinit --disable-debugger" \
		|| die "make failed"

	# need to set HOME because libpango(used by graphviz) complains about it
	if use doc; then
		env - HOME="${T}" \
			CL_SOURCE_REGISTRY="(:source-registry :ignore-inherited-configuration)" \
			ASDF_OUTPUT_TRANSLATIONS="(:output-translations :ignore-inherited-configuration)" \
			make -C doc/manual info html || die "Cannot build manual"
		env - HOME="${T}" \
			CL_SOURCE_REGISTRY="(:source-registry :ignore-inherited-configuration)" \
			ASDF_OUTPUT_TRANSLATIONS="(:output-translations :ignore-inherited-configuration)" \
			make -C doc/internals info html || die "Cannot build internal docs"
	fi
}

src_test() {
	ewarn "Unfortunately, it is known that some tests fail eg."
	ewarn "run-program.impure.lisp. This is an issue of the upstream's"
	ewarn "development and not of Gentoo's side. Please, before filing"
	ewarn "any bug(s) search for older submissions. Thank you."
	time ( cd tests && sh run-tests.sh )
}

src_install() {
	# install system-wide initfile
	dodir /etc/
	sed 's/^X//' > "${D}"/etc/sbclrc <<-EOF
	;;; The following is required if you want source location functions to
	;;; work in SLIME, for example.
	X
	(setf (logical-pathname-translations "SYS")
	X      '(("SYS:SRC;**;*.*.*" #p"/usr/$(get_libdir)/sbcl/src/**/*.*")
	X        ("SYS:CONTRIB;**;*.*.*" #p"/usr/$(get_libdir)/sbcl/**/*.*")))
	X
	;;; Setup ASDF2
	(load "/etc/common-lisp/gentoo-init.lisp")
	EOF

	# Install documentation
	unset SBCL_HOME
	INSTALL_ROOT="${D}/usr" LIB_DIR="/usr/$(get_libdir)" DOC_DIR="${D}/usr/share/doc/${PF}" \
		sh install.sh || die "install.sh failed"

	# rm empty directories lest paludis complain about this
	find "${D}" -empty -type d -exec rmdir -v {} +

	if use doc; then
		dohtml -r doc/manual/
		doinfo doc/manual/*.info*
		dohtml -r doc/internals/sbcl-internals
		doinfo doc/internals/sbcl-internals.info
		docinto internals-notes && dodoc doc/internals-notes/*
	else
		rm -Rv "${D}/usr/share/doc/${PF}" || die
	fi

	dodoc BUGS CREDITS INSTALL NEWS OPTIMIZATIONS PRINCIPLES README TLA TODO

	# install the SBCL source
	if use source; then
		./clean.sh
		cp -av src "${D}/usr/$(get_libdir)/sbcl/" || die
	fi

	# necessary for running newly-saved images
	echo "SBCL_HOME=/usr/$(get_libdir)/${PN}" > "${ENVD}"
	echo "SBCL_SOURCE_ROOT=/usr/$(get_libdir)/${PN}/src" >> "${ENVD}"
	doenvd "${ENVD}"
}