commit ded5e66241f0a76f097289deb73e623ddf800178
author Benjamin Kramer <benny.kra@googlemail.com> Thu Mar 03 08:58:18 2016 +0000
committer Copybara-Service <copybara-worker@google.com> Sat Sep 19 03:35:32 2020 -0700
tree 3ceebcbcab665cf84c0134e00adf38e198f67409
parent 558936ffacba87d45c3635784601ce34962ef1b2

[libclang] Link clang-tidy plugin into libclang if present.

This is a sad workaround for the lack of plugin support in libclang. Depends
on D17807, a tools-extra change that also contains the test case.

This is designed to be easy to remove again if libclang ever grows proper
plugin support.

Differential Revision: http://reviews.llvm.org/D17808

llvm-svn: 262596
GitOrigin-RevId: c1ffdab3fb48cc8b6a5aff95d4015b2a0c97f3cc

tools/libclang/CIndex.cpp

diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 59e34b8..5741eea 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -7933,3 +7933,10 @@
     OS << "--------------------------------------------------\n";
   }
 }
+
+#ifdef CLANG_TOOL_EXTRA_BUILD
+// This anchor is used to force the linker to link the clang-tidy plugin.
+extern volatile int ClangTidyPluginAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED ClangTidyPluginAnchorDestination =
+    ClangTidyPluginAnchorSource;
+#endif

tools/libclang/CMakeLists.txt

diff --git a/tools/libclang/CMakeLists.txt b/tools/libclang/CMakeLists.txt
index 741e02a..5af5930 100644
--- a/tools/libclang/CMakeLists.txt
+++ b/tools/libclang/CMakeLists.txt
@@ -47,6 +47,11 @@
   list(APPEND LIBS clangARCMigrate)
 endif ()
 
+if (CLANG_TOOL_EXTRA_BUILD)
+  add_definitions(-DCLANG_TOOL_EXTRA_BUILD)
+  list(APPEND LIBS clangTidyPlugin)
+endif ()
+
 find_library(DL_LIBRARY_PATH dl)
 if (DL_LIBRARY_PATH)
   list(APPEND LIBS dl)