public cmake e2d variables (E2D_INCLUDE_DIRS and E2D_LIBRARIES)

samples/CMakeLists.txt

@@ -1,20 +1,6 @@
 function(add_e2d_sample NAME)
     set(SAMPLE_NAME sample_${NAME})
 
-    #
-    # external
-    #
-
-    find_package(OpenGL REQUIRED)
-    find_package(Threads REQUIRED)
-
-    if(APPLE)
-        find_library(Cocoa Cocoa)
-        find_library(IOKit IOKit)
-        find_library(CoreVideo CoreVideo)
-        find_library(Foundation Foundation)
-    endif(APPLE)
-
     #
     # sources
     #
@@ -31,24 +17,10 @@ function(add_e2d_sample NAME)
 
     add_executable(${SAMPLE_NAME}
         ${SAMPLE_SOURCES})
-
-    target_include_directories(${SAMPLE_NAME}
-        PRIVATE "../headers")
-
     target_link_libraries(${SAMPLE_NAME}
-        enduro2d
-        glfw
-        ${OPENGL_gl_LIBRARY}
-        ${CMAKE_THREAD_LIBS_INIT})
-
-    if(APPLE)
-        target_link_libraries(${SAMPLE_NAME}
-            ${Cocoa}
-            ${IOKit}
-            ${CoreVideo}
-            ${Foundation})
-    endif(APPLE)
-
+        ${E2D_LIBRARIES})
+    target_include_directories(${SAMPLE_NAME}
+        PRIVATE ${E2D_INCLUDE_DIRS})
     set_target_properties(${SAMPLE_NAME} PROPERTIES
         CXX_STANDARD 14
         CXX_STANDARD_REQUIRED YES