From c8e7a447c5694e7e2a58f2b112530d896efa30ba Mon Sep 17 00:00:00 2001
From: zhou13 <broken.zhou@gmail.com>
Date: Sun, 22 Jul 2018 18:22:14 -0700
Subject: build: Enable LTO (Link Time Optimization) #8654

---
 src/nvim/CMakeLists.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src')

diff --git a/src/nvim/CMakeLists.txt b/src/nvim/CMakeLists.txt
index 7106f76a6e..b32d54b28e 100644
--- a/src/nvim/CMakeLists.txt
+++ b/src/nvim/CMakeLists.txt
@@ -399,6 +399,10 @@ if(JEMALLOC_FOUND)
   list(APPEND NVIM_EXEC_LINK_LIBRARIES ${JEMALLOC_LIBRARIES})
 endif()
 
+if(POLICY CMP0069)
+  cmake_policy(SET CMP0069 NEW)
+endif()
+
 add_executable(nvim ${NVIM_GENERATED_FOR_SOURCES} ${NVIM_GENERATED_FOR_HEADERS}
   ${NVIM_GENERATED_SOURCES} ${NVIM_SOURCES} ${NVIM_HEADERS})
 target_link_libraries(nvim ${NVIM_EXEC_LINK_LIBRARIES})
@@ -407,6 +411,14 @@ install_helper(TARGETS nvim)
 set_property(TARGET nvim APPEND PROPERTY
              INCLUDE_DIRECTORIES ${LUA_PREFERRED_INCLUDE_DIRS})
 
+if(ENABLE_LTO AND (POLICY CMP0069))
+  include(CheckIPOSupported)
+  check_ipo_supported(RESULT IPO_SUPPORTED)
+  if(IPO_SUPPORTED AND (NOT CMAKE_BUILD_TYPE MATCHES Debug))
+    set_property(TARGET nvim PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+  endif()
+endif()
+
 if(WIN32)
   # Copy DLLs and third-party tools to bin/ and install them along with nvim
   add_custom_target(nvim_runtime_deps ALL
-- 
cgit