From b4e5decca74266ff282fd4cac7bcba0e4f53d6e8 Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Tue, 1 Mar 2016 17:19:43 +0800
Subject: [PATCH] Link statically (with LTCG) on Windows

---
 CMakeLists.txt                 | 16 ++++++++++++++++
 cmake/c_flag_overrides.cmake   |  7 +++++++
 cmake/cxx_flag_overrides.cmake |  7 +++++++
 3 files changed, 30 insertions(+)
 create mode 100644 cmake/c_flag_overrides.cmake
 create mode 100644 cmake/cxx_flag_overrides.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1b49498..e373541 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,6 +15,10 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
+# override default c/c++ flags, add /MT to link VC++ runtime statically.
+set(CMAKE_USER_MAKE_RULES_OVERRIDE	${CMAKE_CURRENT_SOURCE_DIR}/cmake/c_flag_overrides.cmake)
+set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX	${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_flag_overrides.cmake)
+
 cmake_minimum_required(VERSION 3.0.0)
 project(chewing-editor VERSION 0.0.1)
 
@@ -136,6 +140,18 @@ target_link_libraries(chewing-editor
     importer
     util
 )
+if(MSVC)
+    target_link_libraries(chewing-editor  # append libraries
+        Qt5::Widgets
+        "${_qt5Widgets_install_prefix}/lib/qtpcre.lib"
+        "${_qt5Widgets_install_prefix}/lib/qtfreetype.lib"
+        "${_qt5Widgets_install_prefix}/lib/qtharfbuzzng.lib"
+        imm32.lib
+        winmm.lib
+        Ws2_32.lib
+    )
+endif()
+
 qt5_use_modules(chewing-editor Widgets)
 install(PROGRAMS ${CMAKE_BINARY_DIR}/chewing-editor DESTINATION ${CMAKE_INSTALL_BINDIR})
 
diff --git a/cmake/c_flag_overrides.cmake b/cmake/c_flag_overrides.cmake
new file mode 100644
index 0000000..adb4e5c
--- /dev/null
+++ b/cmake/c_flag_overrides.cmake
@@ -0,0 +1,7 @@
+if(MSVC)
+    set(CMAKE_C_FLAGS_DEBUG_INIT          "/MTd /Zi /Ob0 /Od /RTC1 /D_DEBUG")
+    set(CMAKE_C_FLAGS_MINSIZEREL_INIT     "/MT /O1 /Ob1 /D NDEBUG")
+    set(CMAKE_C_FLAGS_RELEASE_INIT        "/MT /O2 /Ob2 /GL /Gw /D NDEBUG")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE    "/LTCG /OPT:REF /OPT:ICF")
+    set(CMAKE_C_FLAGS_RELWITHDEBINFO_INIT "/MT /Zi /O2 /Ob1 /D NDEBUG")
+endif()
diff --git a/cmake/cxx_flag_overrides.cmake b/cmake/cxx_flag_overrides.cmake
new file mode 100644
index 0000000..57180a3
--- /dev/null
+++ b/cmake/cxx_flag_overrides.cmake
@@ -0,0 +1,7 @@
+if(MSVC)
+    set(CMAKE_CXX_FLAGS_DEBUG_INIT          "/MTd /Zi /Ob0 /Od /RTC1 /D_DEBUG")
+    set(CMAKE_CXX_FLAGS_MINSIZEREL_INIT     "/MT /O1 /Ob1 /D NDEBUG")
+    set(CMAKE_CXX_FLAGS_RELEASE_INIT        "/MT /O2 /Ob2 /GL /Gw /D NDEBUG")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE      "/LTCG /OPT:REF /OPT:ICF")
+    set(CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "/MT /Zi /O2 /Ob1 /D NDEBUG")
+endif()