From 20c1ad8ab928a4593bc76c940ef40f0c0183e4e1 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Thu, 16 Nov 2017 18:00:19 +0100
Subject: [PATCH] dev-ml/llvm-ocaml: Stop enforcing external lit for tests

Modify the ebuild to no longer enforce externally installed
dev-python/lit for tests, effectively causing the build system to use
the bundled copy of lit (along with llvm-lit). While using the external
package is more canonical, its disadvantages outweight the gain.

Most notably, lit is not slotted in Gentoo and the behavior of lit
frequently changes subtly which caused us to require a major version
match between LLVM and lit. As a result, attempting to build multiple
slots of LLVM with tests enabled cause package collisions. Building both
LLVM and lit simultaneously causes a circular dependency.

Since lit comes from the same package as LLVM itself and LLVM requires
explicit python-any-r1 use anyway, using the bundled copy has no added
cost. Furthermore, in the current git version the additional
(fine-grained) test rules do not work correctly without llvm-lit, making
it impossible to run LLVM binding tests separately.
---
 dev-ml/llvm-ocaml/llvm-ocaml-4.0.1.ebuild    | 12 +-----------
 dev-ml/llvm-ocaml/llvm-ocaml-5.0.9999.ebuild | 12 +-----------
 dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild     |  9 +--------
 3 files changed, 3 insertions(+), 30 deletions(-)

diff --git a/dev-ml/llvm-ocaml/llvm-ocaml-4.0.1.ebuild b/dev-ml/llvm-ocaml/llvm-ocaml-4.0.1.ebuild
index 6375c108d859..5eda59e817ee 100644
--- a/dev-ml/llvm-ocaml/llvm-ocaml-4.0.1.ebuild
+++ b/dev-ml/llvm-ocaml/llvm-ocaml-4.0.1.ebuild
@@ -35,8 +35,7 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	dev-lang/perl
 	dev-ml/findlib
-	test? ( dev-ml/ounit
-		$(python_gen_any_dep "~dev-python/lit-${PV}[\${PYTHON_USEDEP}]") )
+	test? ( dev-ml/ounit )
 	!!<dev-python/configparser-3.3.0.2
 	${PYTHON_DEPS}"
 
@@ -48,11 +47,6 @@ S=${WORKDIR}/${MY_P/_/}.src
 # least intrusive of all
 CMAKE_BUILD_TYPE=RelWithDebInfo
 
-python_check_deps() {
-	! use test \
-		|| has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
 pkg_setup() {
 	LLVM_MAX_SLOT=${PV%%.*} llvm_pkg_setup
 	python-any-r1_pkg_setup
@@ -92,10 +86,6 @@ src_configure() {
 		# TODO: ocamldoc
 	)
 
-	use test && mycmakeargs+=(
-		-DLIT_COMMAND="${EPREFIX}/usr/bin/lit"
-	)
-
 	cmake-utils_src_configure
 
 	local llvm_libdir=$(llvm-config --libdir)
diff --git a/dev-ml/llvm-ocaml/llvm-ocaml-5.0.9999.ebuild b/dev-ml/llvm-ocaml/llvm-ocaml-5.0.9999.ebuild
index 0c2ad271f5c3..b7e7d9839de6 100644
--- a/dev-ml/llvm-ocaml/llvm-ocaml-5.0.9999.ebuild
+++ b/dev-ml/llvm-ocaml/llvm-ocaml-5.0.9999.ebuild
@@ -37,8 +37,7 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	dev-lang/perl
 	dev-ml/findlib
-	test? ( dev-ml/ounit
-		$(python_gen_any_dep "~dev-python/lit-${PV}[\${PYTHON_USEDEP}]") )
+	test? ( dev-ml/ounit )
 	!!<dev-python/configparser-3.3.0.2
 	${PYTHON_DEPS}"
 
@@ -48,11 +47,6 @@ REQUIRED_USE="${PYTHON_REQUIRED_USE}
 # least intrusive of all
 CMAKE_BUILD_TYPE=RelWithDebInfo
 
-python_check_deps() {
-	! use test \
-		|| has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
 pkg_setup() {
 	LLVM_MAX_SLOT=${PV%%.*} llvm_pkg_setup
 	python-any-r1_pkg_setup
@@ -92,10 +86,6 @@ src_configure() {
 		# TODO: ocamldoc
 	)
 
-	use test && mycmakeargs+=(
-		-DLIT_COMMAND="${EPREFIX}/usr/bin/lit"
-	)
-
 	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
 	# also: custom rules for OCaml do not work for CPPFLAGS
 	use debug || local -x CFLAGS="${CFLAGS} -DNDEBUG"
diff --git a/dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild b/dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild
index 7bb17679f8d1..2fa7019d717d 100644
--- a/dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild
+++ b/dev-ml/llvm-ocaml/llvm-ocaml-9999.ebuild
@@ -38,8 +38,7 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	dev-lang/perl
 	dev-ml/findlib
-	test? ( dev-ml/ounit
-		$(python_gen_any_dep "~dev-python/lit-${PV}[\${PYTHON_USEDEP}]") )
+	test? ( dev-ml/ounit )
 	!!<dev-python/configparser-3.3.0.2
 	${PYTHON_DEPS}"
 
@@ -49,11 +48,6 @@ REQUIRED_USE="${PYTHON_REQUIRED_USE}
 # least intrusive of all
 CMAKE_BUILD_TYPE=RelWithDebInfo
 
-python_check_deps() {
-	! use test \
-		|| has_version "dev-python/lit[${PYTHON_USEDEP}]"
-}
-
 pkg_setup() {
 	llvm_pkg_setup
 	python-any-r1_pkg_setup
@@ -97,7 +91,6 @@ src_configure() {
 	)
 
 	use test && mycmakeargs+=(
-		-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
 		-DLLVM_LIT_ARGS="-vv"
 	)
 
-- 
2.26.2