linamh/sys-devel/llvm-base/llvm-base-2.1.ebuild

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# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
inherit eutils
DESCRIPTION="Low Level Virtual Machine"
HOMEPAGE="http://llvm.org/"
SRC_URI="http://llvm.org/releases/${PV}/llvm-${PV}.tar.gz"
LICENSE="LLVM"
# most part of LLVM fall under the "University of Illinois Open Source License"
# which doesn't seem to exist in portage yet, so I call it 'LLVM' for now. it
# can be read from llvm/LICENSE.TXT in the source tarball.
# the directory llvm/runtime/GCCLibraries/libc contains a stripped down C
# library licensed under the LGPL 2.1 with some third party copyrights, see the
# two LICENCE* files in that directory. Those parts do *not* get built, so
# we omit LGPL in ${LICENCE}
SLOT="0"
KEYWORDS="~x86"
# That arch status as of 2.0 is as follows (according to the docs):
#
# x86: Works. Code generation for >= i568
#
# x86-64: Claimed to work. No native code generation
#
# PowerPC: Partial support claimed. No native code generation. (C/C++
# frontend will not build on this)
#
# Alpha: Partial support claimed. Native code generation exists but is
# incomplete
#
# IA-64: Partial support claimed. Native code generation exists but is
# incomplete
IUSE="debug alltargets"
# 'jit' is not a flag anymore. at least on x86, disabling it saves nothing
# at all, so having it always enabled for platforms that support it is fine
# we're not mirrored, fetch from homepage
RESTRICT="mirror"
DEPEND="dev-lang/perl"
RDEPEND="dev-lang/perl"
PDEPEND=""
# note that app-arch/pax is no longer a dependency
S="${WORKDIR}/llvm-${PV}"
MY_LLVM_GCC_PREFIX=/usr/lib/llvm-gcc
# this same variable is located in llvm-gcc's ebuild; keep them in sync
pkg_setup() {
# TODO: some version of GCC are known to miscompile LLVM, check for them
# here. (See docs/GettingStarted.html)
# inherit toolchain-funcs
# tc-getXX
# gcc-fullversion
true
}
src_unpack() {
unpack ${A}
cd "${S}"
# unfortunately ./configure won't listen to --mandir and the-like, so take
# care of this.
einfo "Fixing install dirs"
sed -e 's,^PROJ_docsdir.*,PROJ_docsdir := $(DESTDIR)$(PROJ_prefix)/share/doc/'${PF}, \
-e 's,^PROJ_etcdir.*,PROJ_etcdir := $(DESTDIR)/etc/llvm,' \
-i Makefile.config.in || die "sed failed"
# fix gccld and gccas, which would otherwise point to the build directory
einfo "Fixing gccld and gccas"
sed -e 's,^TOOLDIR.*,TOOLDIR=/usr/bin,' \
-i tools/gccld/gccld.sh tools/gccas/gccas.sh || die "sed failed"
# all binaries get rpath'd to a dir in the temporary tree that doesn't
# contain libraries anyway; can safely remove those to avoid QA warnings
# (the exception would be if we build shared libraries, which we don't)
einfo "Fixing rpath"
sed -e 's,-rpath \$(ToolDir),,g' -i Makefile.rules || die "sed failed"
}
src_compile() {
local CONF_FLAGS=""
if use debug; then
CONF_FLAGS="${CONF_FLAGS} --disable-optimized"
einfo "Note: Compiling LLVM in debug mode will create huge and slow binaries"
# ...and you probably shouldn't use tmpfs, unless it can hold 900MB
else
CONF_FLAGS="${CONF_FLAGS} --enable-optimized"
fi
if use alltargets; then
CONF_FLAGS="${CONF_FLAGS} --enable-targets=all"
else
CONF_FLAGS="${CONF_FLAGS} --enable-targets=host-only"
fi
# a few minor things would be built a bit differently depending on whether
# llvm-gcc is already present on the system or not. let's avoid that by
# not letting it find llvm-gcc. llvm-gcc isn't required for anything
# anyway. this dummy path will get spread to a few places, but none where
# it really matters.
CONF_FLAGS="${CONF_FLAGS} --with-llvmgccdir=/dev/null"
econf ${CONF_FLAGS} || die "econf failed"
emake tools-only || die "emake failed"
}
src_install()
{
make DESTDIR="${D}" install || die "make install failed"
# for some reason, LLVM creates a few .dir files. remove them
find "${D}" -name .dir -print0 | xargs -r0 rm
# tblgen and stkrc do not get installed and wouldn't be very useful anyway,
# so remove their man pages. llvmgcc.1 and llvmgxx.1 are present here for
# unknown reasons. llvm-gcc will install proper man pages for itself, so
# remove these strange thingies here.
einfo "Removing unnecessary man pages"
rm "${D}"/usr/share/man/man1/{tblgen,stkrc,llvmgcc,llvmgxx}.1
# this also installed the man pages llvmgcc.1 and llvmgxx.1, which is a bit
# a mistery because those binares are provided by llvm-gcc
# llvmc makes use of the files in /etc/llvm to find programs to run; those
# files contain markers that are meant to be replaced at runtime with
# strings that were determined at llvm-base's compile time (odd isn't it?);
# those strings will be empty in case llvm-base is built while llvm-gcc
# doesn't exist yet (which is a common case). to make things work in
# either case, fix it by replacing the markers with hard strings of where
# llvm-gcc will be in case it will be installed
einfo "Configuring llvmc"
for X in c c++ cpp cxx ll st; do
sed -e "s,%cc1%,${MY_LLVM_GCC_PREFIX}/libexec/gcc/${CHOST}/4.0.1/cc1,g" \
-e "s,%cc1plus%,${MY_LLVM_GCC_PREFIX}/libexec/gcc/${CHOST}/4.0.1/cc1plus,g" \
-e "s,%llvmgccdir%,${MY_LLVM_GCC_PREFIX},g" \
-e "s,%llvmgcclibexec%,${MY_LLVM_GCC_PREFIX}/libexec/gcc/${CHOST}/4.0.1,g" \
-e "s,%bindir%,/usr/bin,g" \
-i "${D}/etc/llvm/$X" || "sed failed"
done
}