dev-libs/libclc: Make use of VIDEO_CARDS use flags

Drop runtime depend on clang.

Closes: https://bugs.gentoo.org/603454

diff --git a/dev-libs/libclc/libclc-0.2.0_pre20180610.ebuild b/dev-libs/libclc/libclc-0.2.0_pre20180610.ebuild
index ee4e3e25904f5c086ba5f6591dd9b4da5dfa3e25..41bd87a992249f786a800f08424869d12353df81 100644 (file)
--- a/dev-libs/libclc/libclc-0.2.0_pre20180610.ebuild
+++ b/dev-libs/libclc/libclc-0.2.0_pre20180610.ebuild
@@ -31,17 +31,18 @@ fi
 LICENSE="|| ( MIT BSD )"
 SLOT="0"
 KEYWORDS="~amd64 ~arm64 ~x86"
-IUSE=""
+IUSE_VIDEO_CARDS="video_cards_nvidia video_cards_r600 video_cards_radeonsi"
+IUSE="${IUSE_VIDEO_CARDS}"
+REQUIRED_USE="|| ( ${IUSE_VIDEO_CARDS} )"
 
-RDEPEND="
+DEPEND="
        || (
                sys-devel/clang:7
                sys-devel/clang:6
                sys-devel/clang:5
                sys-devel/clang:4
                >=sys-devel/clang-3.9:0
-       )"
-DEPEND="${RDEPEND}
+       )
        ${PYTHON_DEPS}"
 
 LLVM_MAX_SLOT=7
@@ -63,10 +64,18 @@ pkg_setup() {
 }
 
 src_configure() {
+       local libclc_targets=()
+
+       use video_cards_nvidia && libclc_targets+=("nvptx--" "nvptx64--" "nvptx--nvidiacl" "nvptx64--nvidiacl")
+       use video_cards_r600 && libclc_targets+=("r600--")
+       use video_cards_radeonsi && libclc_targets+=("amdgcn--" "amdgcn-mesa-mesa3d" "amdgcn--amdhsa")
+
+       [[ ${#libclc_targets[@]} ]] || die "libclc target missing!"
+
        ./configure.py \
                --with-cxx-compiler="$(tc-getCXX)" \
                --with-llvm-config="$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config" \
-               --prefix="${EPREFIX}/usr" || die
+               --prefix="${EPREFIX}/usr" "${libclc_targets[@]}" || die
 }
 
 src_compile() {