Cmake build: Select use of interprocedural optimization

[features.git] / 3rdparty / mythes / CMakeLists.txt

diff --git a/3rdparty/mythes/CMakeLists.txt b/3rdparty/mythes/CMakeLists.txt
index f096faa14d9dbe5fa43b51eb644eec99b056e166..869bee7c93769987d3de546435a62011cedc5b57 100644 (file)
--- a/3rdparty/mythes/CMakeLists.txt
+++ b/3rdparty/mythes/CMakeLists.txt
@@ -1,7 +1,13 @@
-cmake_minimum_required(VERSION 2.4.4)
-set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
+cmake_minimum_required(VERSION 3.1)
+
+set(LYX_IPO_SUPPORTED FALSE)
+if (POLICY CMP0069)
+  cmake_policy(SET CMP0069 NEW)
+  if (LYX_USE_IPO MATCHES "ON")
+    set(LYX_IPO_SUPPORTED YES)
+  endif()
+endif()
 
-project(zlib C)
 
 set(VERSION "1.2.5")
 set(SRCDIR ${CMAKE_CURRENT_SOURCE_DIR}/${VERSION})
@@ -22,4 +28,6 @@ set(MYTHESLIB_LIBRARY mytheslibstatic CACHE STRING "Mytheslib library" FORCE)
 set(MYTHESLIB_INCLUDE_DIR  ${SRCDIR} CACHE STRING "Mytheslib include dir" FORCE)
 set(MYTHESLIB_FOUND CACHE STRING "Mytheslib found" FORCE )
 
-set_target_properties(mytheslibstatic PROPERTIES FOLDER "3rd_party")
+set_target_properties(mytheslibstatic PROPERTIES
+       FOLDER "3rd_party"
+       INTERPROCEDURAL_OPTIMIZATION ${LYX_IPO_SUPPORTED})