Add Darwin dylib versioning support to libclang when build with CMake.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110062 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/tools/libclang/CMakeLists.txt b/tools/libclang/CMakeLists.txt
index ab4accae5e27de76ba63c624986d51bf5d055d41..674946a36b1a1206dddd6f0ab7154d534ba0b7f9 100644 (file)
--- a/tools/libclang/CMakeLists.txt
+++ b/tools/libclang/CMakeLists.txt
@@ -31,17 +31,22 @@ add_clang_library(libclang
 )
 
 if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-  # FIXME: Deal with LLVM_SUBMIT_VERSION?
+  # dylib versioning information
+  # FIXME: Is there a more CMake-ish way to handle this?
+  set(LIBCLANG_VERSION 1 
+      CACHE STRING "Version number of the libclang library")
+  set(LIBCLANG_SUBVERSION 0
+      CACHE STRING "Minor version number of the libclang library")
+  set(LIBCLANG_LINK_FLAGS 
+      "-Wl,-current_version -Wl,${LIBCLANG_VERSION}.${LIBCLANG_SUBVERSION} -Wl,-compatibility_version -Wl,1")
+
+  set(LIBCLANG_LINK_FLAGS 
+      "${LIBCLANG_LINK_FLAGS} -avoid-version -Wl,-dead_strip -Wl,-seg1addr -Wl,0xE0000000")
 
-  # FIXME: This uses a special darwin-specific exports file in order to
-  # get underscore-prefixed names. It would be better to have build rules
-  # which know how to produce a darwin-suitable exports file from the
-  # regular exports file.
   set_target_properties(libclang
     PROPERTIES
-    LINK_FLAGS "-avoid-version -Wl,-exported_symbols_list -Wl,${CMAKE_CURRENT_SOURCE_DIR}/libclang.darwin.exports -Wl,-dead_strip -Wl,-seg1addr -Wl,0xE0000000"
-    INSTALL_NAME_DIR "@executable_path/../lib"
-    )
+    LINK_FLAGS "${LIBCLANG_LINK_FLAGS}"
+    INSTALL_NAME_DIR "@executable_path/../lib")
 endif()
 
 if(MSVC)