From d3df3efaf191a1554a32100c41fa18a22c689858 Mon Sep 17 00:00:00 2001
From: Petr Mikheev <ptmikheev@gmail.com>
Date: Sat, 4 Dec 2021 11:32:39 +0000
Subject: [PATCH] Precompile sol.hpp in order to reduce compilation time.

---
 CMakeLists.txt                        | 6 ++++--
 apps/openmw/CMakeLists.txt            | 5 ++++-
 apps/openmw/android_main.cpp          | 2 ++
 apps/openmw_test_suite/CMakeLists.txt | 2 +-
 components/CMakeLists.txt             | 5 +++++
 5 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 067b645a39..3f19b2a54f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -414,7 +414,8 @@ else(USE_LUAJIT)
 endif(USE_LUAJIT)
 
 # C++ library binding to Lua
-set(SOL_INCLUDE_DIRS ${OpenMW_SOURCE_DIR}/extern/sol3.2.2 ${OpenMW_SOURCE_DIR}/extern/sol_config)
+set(SOL_INCLUDE_DIR ${OpenMW_SOURCE_DIR}/extern/sol3.2.2)
+set(SOL_CONFIG_DIR ${OpenMW_SOURCE_DIR}/extern/sol_config)
 
 include_directories(
     BEFORE SYSTEM
@@ -426,7 +427,8 @@ include_directories(
     ${OPENGL_INCLUDE_DIR}
     ${BULLET_INCLUDE_DIRS}
     ${LUA_INCLUDE_DIR}
-    ${SOL_INCLUDE_DIRS}
+    ${SOL_INCLUDE_DIR}
+    ${SOL_CONFIG_DIR}
 )
 
 link_directories(${SDL2_LIBRARY_DIRS} ${Boost_LIBRARY_DIRS})
diff --git a/apps/openmw/CMakeLists.txt b/apps/openmw/CMakeLists.txt
index 2582b272cf..551c68ce11 100644
--- a/apps/openmw/CMakeLists.txt
+++ b/apps/openmw/CMakeLists.txt
@@ -153,9 +153,12 @@ target_link_libraries(openmw
     "osg-ffmpeg-videoplayer"
     "oics"
     components
-    ${LUA_LIBRARIES}
 )
 
+if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.16)
+    target_precompile_headers(openmw PRIVATE ${SOL_INCLUDE_DIR}/sol/sol.hpp)
+endif ()
+
 if (ANDROID)
     target_link_libraries(openmw EGL android log z)
 endif (ANDROID)
diff --git a/apps/openmw/android_main.cpp b/apps/openmw/android_main.cpp
index cc36388b0b..95365915df 100644
--- a/apps/openmw/android_main.cpp
+++ b/apps/openmw/android_main.cpp
@@ -1,4 +1,6 @@
+#ifndef stderr
 int stderr = 0; // Hack: fix linker error
+#endif
 
 #include "SDL_main.h"
 #include <SDL_gamecontroller.h>
diff --git a/apps/openmw_test_suite/CMakeLists.txt b/apps/openmw_test_suite/CMakeLists.txt
index ed1d6c413b..7cfac20421 100644
--- a/apps/openmw_test_suite/CMakeLists.txt
+++ b/apps/openmw_test_suite/CMakeLists.txt
@@ -70,7 +70,7 @@ if (GTEST_FOUND AND GMOCK_FOUND)
 
     openmw_add_executable(openmw_test_suite openmw_test_suite.cpp ${UNITTEST_SRC_FILES})
 
-    target_link_libraries(openmw_test_suite ${GMOCK_LIBRARIES} components ${LUA_LIBRARIES})
+    target_link_libraries(openmw_test_suite ${GMOCK_LIBRARIES} components)
     # Fix for not visible pthreads functions for linker with glibc 2.15
     if (UNIX AND NOT APPLE)
         target_link_libraries(openmw_test_suite ${CMAKE_THREAD_LIBS_INIT})
diff --git a/components/CMakeLists.txt b/components/CMakeLists.txt
index bdb22f2dc5..43f0fb1ab5 100644
--- a/components/CMakeLists.txt
+++ b/components/CMakeLists.txt
@@ -283,6 +283,7 @@ target_link_libraries(components
     ${SDL2_LIBRARIES}
     ${OPENGL_gl_LIBRARY}
     ${MyGUI_LIBRARIES}
+    ${LUA_LIBRARIES}
     LZ4::LZ4
     RecastNavigation::DebugUtils
     RecastNavigation::Detour
@@ -371,3 +372,7 @@ endif(OSG_STATIC)
 if(USE_QT)
     set_property(TARGET components_qt PROPERTY AUTOMOC ON)
 endif(USE_QT)
+
+if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.16)
+    target_precompile_headers(components PRIVATE ${SOL_INCLUDE_DIR}/sol/sol.hpp)
+endif ()