Linux build: add SDL2 includes for build on gentoo-based distrs

Author: eagleivg

Externals/OPCODE/CMakeLists.txt

@@ -1,11 +1,15 @@
 project(OPCODE)
 add_dir (
-	"."
-	)
+    "."
+    )
 
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../src ${CMAKE_CURRENT_SOURCE_DIR}/../../sdk/include)
+include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../src
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../sdk/include
+    ${SDL_INCLUDE_DIR}
+    )
 
 add_library(${PROJECT_NAME} SHARED ${${PROJECT_NAME}__SOURCES} ${${PROJECT_NAME}__INCLUDES})
 

src/xrCDB/CMakeLists.txt

@@ -6,9 +6,13 @@ list(APPEND DIRS
 
 add_dir("${DIRS}")
 
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/../../sdk/include /usr/include/SDL2)
+include_directories(
+    ${CMAKE_CURRENT_SOURCE_DIR}/..
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../sdk/include
+    ${SDL_INCLUDE_DIR}
+    )
 
 add_library(${PROJECT_NAME} SHARED ${${PROJECT_NAME}__SOURCES} ${${PROJECT_NAME}__INCLUDES})
 
 set_target_properties(${PROJECT_NAME} PROPERTIES PREFIX "")
-target_link_libraries(${PROJECT_NAME} xrCore xrMiscMath OPCODE xrAPI)
+target_link_libraries(${PROJECT_NAME} xrCore xrMiscMath OPCODE xrAP ${SDL_LIBRARIES})