# HG changeset patch
# User koda
# Date 1461211823 14400
# Node ID ae6706411b24152ad0db6a2b19c6f3b1be183e57
# Parent  2277181700979a6c37cc378ee3d2814a6ddea761
Hijack SDL2 and GLEW include and library when compiling to javascript

emscripten already provides the SDL2 suite and will simply ignore
missing libraries.

diff -r 227718170097 -r ae6706411b24 cmake_modules/FindGLEW.cmake
--- a/cmake_modules/FindGLEW.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindGLEW.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -34,6 +34,11 @@
             $ENV{PROGRAMFILES}/GLEW/lib
             DOC "The GLEW library")
 
+if(BUILD_ENGINE_JS)
+    set(GLEW_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
+    SET(GLEW_LIBRARY "glew_emscripten_internal")
+endif()
+
 find_package_handle_standard_args(GLEW DEFAULT_MSG GLEW_LIBRARY GLEW_INCLUDE_DIR)
 mark_as_advanced(GLEW_LIBRARY GLEW_INCLUDE_DIR)
 
diff -r 227718170097 -r ae6706411b24 cmake_modules/FindSDL2.cmake
--- a/cmake_modules/FindSDL2.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindSDL2.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -158,6 +158,11 @@
     SET(SDL2_LIBRARY_TEMP "${SDL2_LIBRARY_TEMP}" CACHE INTERNAL "")
 ENDIF(SDL2_LIBRARY_TEMP)
 
+if(BUILD_ENGINE_JS)
+    set(SDL2_LIBRARY "sdl2_emscripten_internal" CACHE STRING "emscripten override" FORCE)
+    set(SDL2_INCLUDE_DIR "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL" CACHE STRING "emscripten override" FORCE)
+endif()
+
 INCLUDE(FindPackageHandleStandardArgs)
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2 REQUIRED_VARS SDL2_LIBRARY SDL2_INCLUDE_DIR)
diff -r 227718170097 -r ae6706411b24 cmake_modules/FindSDL2_image.cmake
--- a/cmake_modules/FindSDL2_image.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindSDL2_image.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -74,6 +74,12 @@
 set(SDL2_IMAGE_LIBRARIES ${SDL2_IMAGE_LIBRARY})
 set(SDL2_IMAGE_INCLUDE_DIRS ${SDL2_IMAGE_INCLUDE_DIR})
 
+if(BUILD_ENGINE_JS)
+    set(SDL2_IMAGE_LIBRARY "sdl2_image_emscripten_internal")
+    set(SDL2_IMAGE_LIBRARIES "sdl2_image_emscripten_internal")
+    set(SDL2_IMAGE_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
+endif()
+
 include(FindPackageHandleStandardArgs)
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_image
diff -r 227718170097 -r ae6706411b24 cmake_modules/FindSDL2_mixer.cmake
--- a/cmake_modules/FindSDL2_mixer.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindSDL2_mixer.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -74,6 +74,12 @@
 set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY})
 set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR})
 
+if(BUILD_ENGINE_JS)
+    set(SDL2_MIXER_LIBRARY "sdl2_mixer_emscripten_internal")
+    set(SDL2_MIXER_LIBRARIES "sdl2_mixer_emscripten_internal")
+    set(SDL2_MIXER_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
+endif()
+
 include(FindPackageHandleStandardArgs)
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer
diff -r 227718170097 -r ae6706411b24 cmake_modules/FindSDL2_net.cmake
--- a/cmake_modules/FindSDL2_net.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindSDL2_net.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -74,6 +74,12 @@
 set(SDL2_NET_LIBRARIES ${SDL2_NET_LIBRARY})
 set(SDL2_NET_INCLUDE_DIRS ${SDL2_NET_INCLUDE_DIR})
 
+if(BUILD_ENGINE_JS)
+    set(SDL2_NET_LIBRARY "sdl2_net_emscripten_internal")
+    set(SDL2_NET_LIBRARIES "sdl2_net_emscripten_internal")
+    set(SDL2_NET_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
+endif()
+
 include(FindPackageHandleStandardArgs)
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_net
diff -r 227718170097 -r ae6706411b24 cmake_modules/FindSDL2_ttf.cmake
--- a/cmake_modules/FindSDL2_ttf.cmake	Thu Apr 21 00:09:07 2016 -0400
+++ b/cmake_modules/FindSDL2_ttf.cmake	Thu Apr 21 00:10:23 2016 -0400
@@ -74,6 +74,12 @@
 set(SDL2_TTF_LIBRARIES ${SDL2_TTF_LIBRARY})
 set(SDL2_TTF_INCLUDE_DIRS ${SDL2_TTF_INCLUDE_DIR})
 
+if(BUILD_ENGINE_JS)
+    set(SDL2_TTF_LIBRARY "sdl2_ttf_emscripten_internal")
+    set(SDL2_TTF_LIBRARIES "sdl2_ttf_emscripten_internal")
+    set(SDL2_TTF_INCLUDE_DIRS "${CMAKE_SYSTEM_INCLUDE_PATH}/SDL")
+endif()
+
 include(FindPackageHandleStandardArgs)
 
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_ttf