Port r198088 (set NO_DEAD_STRIP for clang) from make to cmake.

Also stop setting passing -dead_strip explicitly for libclang and instead
rely on this now happening by default. (And make it happen by default for
add_clang_library, which doesn't use the library cmake functions from llvm.)

llvm-svn: 198200

clang/CMakeLists.txt

@@ -305,6 +305,7 @@ macro(add_clang_library name)
     set(libkind)
   endif()
   add_library( ${name} ${libkind} ${srcs} )
+  add_dead_strip( ${name} )
   if( LLVM_COMMON_DEPENDS )
     add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
   endif( LLVM_COMMON_DEPENDS )

clang/tools/driver/CMakeLists.txt

@@ -16,6 +16,9 @@ set( LLVM_LINK_COMPONENTS
   Vectorize
   )
 
+# Support plugins.
+set(LLVM_NO_DEAD_STRIP 1)
+
 add_clang_executable(clang
   driver.cpp
   cc1_main.cpp

clang/tools/libclang/CMakeLists.txt

@@ -84,8 +84,7 @@ if( LLVM_ENABLE_PIC )
   endif()
 
   if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-    set(LIBCLANG_LINK_FLAGS
-      " -Wl,-compatibility_version -Wl,1 -Wl,-dead_strip")
+    set(LIBCLANG_LINK_FLAGS " -Wl,-compatibility_version -Wl,1")
     if (DEFINED ${LLVM_SUBMIT_VERSION})
       set(LIBCLANG_LINK_FLAGS
         "${LIBCLANG_LINK_FLAGS} -Wl,-current_version -Wl,${LLVM_SUBMIT_VERSION}.${LLVM_SUBMIT_SUBVERSION}")