Add more LTO flags.

GitOrigin-RevId: 5061af1cc5078f0626c0f74cf5b672506d371a80
Harlber · Mar 17, 2018 · f270a2e · f270a2e
1 parent 242c39d
commit f270a2e
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -45,8 +45,16 @@ if (POLICY CMP0069)
     if (IPO_SUPPORTED)
       # set_property(DIRECTORY PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE) do not work?
       string(REPLACE ";" " " CXX_FLAGS_IPO "${CMAKE_CXX_COMPILE_OPTIONS_IPO}")
-      message(STATUS "Use link time optimizations: ${CXX_FLAGS_IPO}")
+      message(STATUS "Use link time CXX optimization options: ${CXX_FLAGS_IPO}")
       set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${CXX_FLAGS_IPO}")
+
+      string(REPLACE ";" " " C_FLAGS_IPO "${CMAKE_C_COMPILE_OPTIONS_IPO}")
+      message(STATUS "Use link time C optimization options: ${C_FLAGS_IPO}")
+      set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${C_FLAGS_IPO}")
+
+      string(REPLACE ";" " " LINK_FLAGS_IPO "${CMAKE_CXX_LINK_OPTIONS_IPO}")
+      message(STATUS "Use link time optimization linker options: ${LINK_FLAGS_IPO}")
+      set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} ${LINK_FLAGS_IPO}")
     endif()
   endif()
 endif()