From: Gunnar Beutner <gunnar.beutner@netways.de>
Date: Sat, 27 Aug 2016 14:07:37 +0000 (+0200)
Subject: Add -flto to compiler flags
X-Git-Tag: v2.6.0~189
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0d3563ddaac73a8c0a5965369aff80f9549dbe8b;p=icinga2

Add -flto to compiler flags

fixes #12564
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6abd47f79..5032229af 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -259,6 +259,16 @@ if(NOT MSVC)
   endif()
 endif()
 
+check_cxx_compiler_flag("-flto" CXX_FLAG_LTO)
+
+if(CXX_FLAG_LTO)
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_DEBUG} -flto")
+  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_DEBUG} -flto")
+
+  set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_DEBUG} -flto")
+  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_DEBUG} -flto")
+endif()
+
 configure_file(config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config.h ESCAPE_QUOTES)
 
 install(