dev-util/clazy: Allow to link against single clang-cpp lib

Bug: https://bugs.gentoo.org/711642
Package-Manager: Portage-2.3.98, Repoman-2.3.22
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

2 files changed, 64 insertions, 1 deletions

diff --git a/dev-util/clazy/clazy-1.6-r1.ebuild b/dev-util/clazy/clazy-1.6-r1.ebuild
index 075782027ed6..2627d7b7becb 100644
--- a/dev-util/clazy/clazy-1.6-r1.ebuild
+++ b/dev-util/clazy/clazy-1.6-r1.ebuild
@@ -21,7 +21,10 @@ DEPEND="${RDEPEND}"
 
 DOCS=( README.md )
 
-PATCHES=( "${FILESDIR}/${P}-llvm-10.patch" )
+PATCHES=(
+	"${FILESDIR}/${P}-llvm-10.patch"
+	"${FILESDIR}/${P}-clang-cpp.patch"
+)
 
 src_prepare() {
 	cmake_src_prepare
diff --git a/dev-util/clazy/files/clazy-1.6-clang-cpp.patch b/dev-util/clazy/files/clazy-1.6-clang-cpp.patch
new file mode 100644
index 000000000000..16b9af00ce37
--- /dev/null
+++ b/dev-util/clazy/files/clazy-1.6-clang-cpp.patch
@@ -0,0 +1,60 @@
+From 0e295e5a926496f5a5d46ea4feb1b285b084f5e0 Mon Sep 17 00:00:00 2001
+From: Christophe Giboudeaux <christophe@krop.fr>
+Date: Mon, 11 Nov 2019 10:31:49 +0100
+Subject: Check if clazy should be linked to clang-cpp
+
+Summary:
+According to [1], clang can now provide a single shared library instead of split
+ones.
+
+We have to check if this library exists and link to it if available.
+
+[1] https://releases.llvm.org/9.0.0/tools/clang/docs/ReleaseNotes.html#build-system-changes
+
+Reviewers: smartins, kde-buildsystem
+
+Reviewed By: smartins
+
+Differential Revision: https://phabricator.kde.org/D25163
+---
+ CMakeLists.txt        | 11 ++++++++---
+ cmake/FindClang.cmake |  1 +
+ 2 files changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index b7301ed..ce1f887 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -125,9 +125,14 @@ macro(link_to_llvm name is_standalone)
+   if(WIN32)
+     target_link_libraries(${name} version.lib)
+   endif()
+-    target_link_libraries(${name} clangTooling)
+-    target_link_libraries(${name} clangToolingCore)
+-    target_link_libraries(${name} ${clang_tooling_refactoring_lib})
++    # clang >= 9.0 can provide a single shared library instead of split ones
++    if(CLANG_CLANG-CPP_LIB)
++        target_link_libraries(${name} clang-cpp)
++    else()
++        target_link_libraries(${name} clangTooling)
++        target_link_libraries(${name} clangToolingCore)
++        target_link_libraries(${name} ${clang_tooling_refactoring_lib})
++    endif()
+ endmacro()
+ 
+ macro(add_clang_plugin name)
+diff --git a/cmake/FindClang.cmake b/cmake/FindClang.cmake
+index 542172e..50e0829 100644
+--- a/cmake/FindClang.cmake
++++ b/cmake/FindClang.cmake
+@@ -62,6 +62,7 @@ if (LLVM_FOUND AND LLVM_LIBRARY_DIRS)
+   # note: On Windows there's 'libclang.dll' instead of 'clang.dll' -> search for 'libclang', too
+   find_library(CLANG_LIBCLANG_LIB NAMES clang libclang HINTS ${LLVM_LIBRARY_DIRS}) # LibClang: high-level C interface
+ 
++  FIND_AND_ADD_CLANG_LIB(clang-cpp)
+   FIND_AND_ADD_CLANG_LIB(clangFrontend)
+   FIND_AND_ADD_CLANG_LIB(clangDriver)
+   FIND_AND_ADD_CLANG_LIB(clangCodeGen)
+-- 
+cgit v1.1
+