# $Id$

PNAME="llvm"
PVER="2.9"
PBUILD="r1"

PCATEGORIE="sys-dev"

DESCRIPTION="The Low Level Virtual Machine."
HOMEPAGE="http://llvm.org/"

DEPEND_x86_64=">= sys-apps/multiarch-wrapper-1"
SPECIAL_VARS="DEPEND_x86_64"

DEPEND="\$(eval echo \\\$DEPEND_\${ARCH/i*86/x86} | tr ';' '\n')
	>= dev-lang/perl-5.14
	>= dev-libs/libffi-3"

SDEPEND=">= dev-util/pkgconfig-0.25
	>= sys-dev/bison-2.5
	>= sys-dev/flex-2.3.35
	>= sys-dev/make-3.82
	>= sys-dev/gcc-4.6
	>= sys-dev/binutils-2.21"

SRCFILE="${PNAME}-${PVER}.tgz"
SRCDIR="${BUILDDIR}/${PNAME}-${PVER}"

sminclude mtools multilib

SRC_URI=(
	http://llvm.org/releases/${PVER}/${SRCFILE}
	mirror://${PNAME}/${SRCFILE}
	mirror://${PNAME}/${PNAME}-${PVER}-no-docs.patch
	mirror://${PNAME}/${PNAME}-${PVER}-PR9869-operator-destructor.patch
)

UP2DATE="updatecmd ${HOMEPAGE} | grep 'Download now' | sed 's:.*][lL][lL][vV][mM]\ \(.*\):\1:'"

src_prepare()
{
	munpack ${SRCFILE} || die

	# non-standard configure, fix config pathes, rpath and cflags
	all-abis 'sed -e "s,^PROJ_docsdir.*,PROJ_docsdir := \$(PROJ_prefix)/share/doc/${PNAME}-${PVER}," -e "s,^PROJ_etcdir.*,PROJ_etcdir := ''/etc/llvm," -e "s,^PROJ_libdir.*,PROJ_libdir := \$(PROJ_prefix)/$(mlibdir)/${PNAME}," -i Makefile.config.in || die'
	all-abis 'sed -e "s,\$ABS_RUN_DIR/lib,/usr/$(mlibdir)/${PNAME}," -i tools/llvm-config/llvm-config.in.in || die'
	all-abis 'sed -e "s,\$(RPATH) -Wl\,\$(\(ToolDir\|LibDir\)),\$(RPATH) -Wl\,/usr/$(mlibdir)/${PNAME}," -e "/OmitFramePointer/s/-fomit-frame-pointer//" -i Makefile.rules || die'

	# do not generate docs, which are just the man pages
	mpatch ${PNAME}-${PVER}-no-docs.patch || die

	# operator.h incompatibility with gcc-4.6 in c++0x mode
	# see http://llvm.org/bugs/show_bug.cgi?id=9869
	mpatch ${PNAME}-${PVER}-PR9869-operator-destructor.patch || die
}

src_compile()
{
	cd ${SRCDIR}

	local myopts

	# enable pic on 64bit arches
	[[ ${ARCH} = x86_64 ]] && myopts+="--enable-pic"
	
	# be mutlilib friendly
	[[ $(mlibdir) != lib ]] && myopts+=" --with-cxx-include-32bit-dir=32"

	mconfigure \
		--enable-shared \
		--with-optimize-option= \
		--enable-optimized \
		--enable-libffi \
		--enable-bindings=none \
		${myopts} \
		|| die

	mmake VERBOSE=1 KEEP_SYMBOLS=1 REQUIRES_RTTI=1 || die
}

src_install()
{
	cd ${SRCDIR}
	mmake DESTDIR=${BINDIR} KEEP_SYMBOLS=1 install || die

	# be multilib friendly
	if [[ $(mlibdir) != lib ]]
	then
		if [[ -f ${BINDIR}/usr/bin/llvm-config ]]
		then
			rm ${BINDIR}/usr/bin/llvm-config || die
		fi
		all-abis minstallexec llvm-config /usr/bin/llvm-config-$(mabi) || die
		mlink multiarch-wrapper /usr/bin/llvm-config || die
 
		if [[ -f ${BINDIR}/usr/include/llvm/Config/config.h ]]
		then
			rm ${BINDIR}/usr/include/llvm/Config/config.h || die
		fi
		all-abis minstallfile config.h /usr/include/llvm/Config/config-$(mabi) || die
		cat > ${BINDIR}/usr/include/llvm/Config/config.h << EOF
#include <bits/wordsize.h>

#if __WORDSIZE == 32
#include "config-32.h"
#elif __WORDSIZE == 64
#include "config-64.h"
#else
#error "Unknown word size"
#endif
EOF

		if [[ -f ${BINDIR}/usr/include/llvm/Config/llvm-config.h ]]
		then
			rm ${BINDIR}/usr/include/llvm/Config/llvm-config.h || die
		fi
		all-abis minstallfile config.h /usr/include/llvm/Config/llvm-config-$(mabi) || die
		cat > ${BINDIR}/usr/include/llvm/Config/llvm-config.h << EOF
#include <bits/wordsize.h>

#if __WORDSIZE == 32
#include "llvm-config-32.h"
 #elif __WORDSIZE == 64
 #include "llvm-config-64.h"
 #else
 #error "Unknown word size"
 #endif
EOF
 	fi
}