From 6f9553b8e4808e115ab38f1178c875fd8748a803 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Tue, 11 Sep 2018 09:23:59 +0200
Subject: [PATCH] dev-python/llvmlite: Use parallel make for shared library

---
 .../llvmlite/llvmlite-0.25.0_rc1.ebuild       | 21 ++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/dev-python/llvmlite/llvmlite-0.25.0_rc1.ebuild b/dev-python/llvmlite/llvmlite-0.25.0_rc1.ebuild
index c882b6bc8644..64fcac011116 100644
--- a/dev-python/llvmlite/llvmlite-0.25.0_rc1.ebuild
+++ b/dev-python/llvmlite/llvmlite-0.25.0_rc1.ebuild
@@ -34,13 +34,20 @@ PATCHES=(
 	"${FILESDIR}"/llvmlite-0.15.0-use-system-six.patch
 )
 
-python_prepare_all() {
-	# disable -flto, we do not force it against user's wishes
-	# add -fPIC, needed to link against shared libraries
-	# plus use those vars to force our CXXFLAGS/LDFLAGS in...
-	export CXX_FLTO_FLAGS="${CXXFLAGS} -fPIC"
-	export LD_FLTO_FLAGS="${LDFLAGS} -fPIC"
-	distutils-r1_python_prepare_all
+python_configure_all() {
+	# upstream's build system is just horrible, and they ignored the PR
+	# fixing it, so let's build the shared lib properly using implicit
+	# make rules
+
+	export LDLIBS=$(llvm-config --libs all)
+	export CXXFLAGS="$(llvm-config --cxxflags) -fPIC ${CXXFLAGS}"
+	export LDFLAGS="$(llvm-config --ldflags) ${LDFLAGS}"
+
+	local files=( ffi/*.cpp )
+	emake -f - <<EOF
+ffi/libllvmlite.so: ${files[*]/.cpp/.o}
+	\$(CXX) -shared \$(CXXFLAGS) \$(LDFLAGS) -o \$@ \$^ \$(LDLIBS)
+EOF
 }
 
 python_test() {
-- 
2.26.2