Made NBGraphics installable

engine/NBGraphics/CMakeLists.txt

@@ -1,14 +1,24 @@
-find_package(OpenGL)
-add_subdirectory(${GLFW_PATH} ${GLFW_PATH}/build)
+cmake_minimum_required(VERSION 3.10)
+project(NBGraphics VERSION 0.1)
 
-include_directories(
-    ${GLFW_PATH}/include
-    ${GLAD_PATH}/include
-    ${STBIMAGE_PATH}
+set(GLAD_PATH ${NBENGINE_ROOT}/../glad/)
+set(STBIMAGE_PATH ${NBENGINE_ROOT}/../stbi_image)
+get_filename_component(GLAD_PATH ${GLAD_PATH} ABSOLUTE)
+get_filename_component(STBIMAGE_PATH ${STBIMAGE_PATH} ABSOLUTE)
+
+set(CMAKE_PREFIX_PATH
+    "${CMAKE_PREFIX_PATH}"
+    "C:/Program Files (x86)/GLFW/lib/cmake/glfw3/"    
 )
+find_package(OpenGL REQUIRED)
+find_package(glfw3 REQUIRED)
 
 set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
-set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
+if (NB_BUILD_TESTS)
+    set(GLFW_BUILD_TESTS ON CACHE BOOL "" FORCE)
+else()
+    set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
+endif()
 set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
 
 toAbsolutePath(NB_GRAPHICS_SOURCE
@@ -21,19 +31,18 @@ toAbsolutePath(NB_GRAPHICS_SOURCE
     ./src/VertexArray.cpp
     ./src/Window.cpp
 )
-
 toAbsolutePath(NB_GRAPHICS_INCLUDE
-    ./Buffers.hpp
-    ./Camera.hpp
-    ./Draw.hpp
-    ./FrameBuffers.hpp
-    ./GLLoad.hpp
-    ./Image.hpp
-    ./OGLObjects.hpp
-    ./ProgramPipeline.hpp
-    ./Textures.hpp
-    ./VertexArray.hpp
-    ./Window.hpp
+    ./include/NBGraphics/Buffers.hpp
+    ./include/NBGraphics/Camera.hpp
+    ./include/NBGraphics/Draw.hpp
+    ./include/NBGraphics/FrameBuffers.hpp
+    ./include/NBGraphics/GLLoad.hpp
+    ./include/NBGraphics/Image.hpp
+    ./include/NBGraphics/OGLObjects.hpp
+    ./include/NBGraphics/ProgramPipeline.hpp
+    ./include/NBGraphics/Textures.hpp
+    ./include/NBGraphics/VertexArray.hpp
+    ./include/NBGraphics/Window.hpp
 )
 
 set(NB_GRAPHICS_SOURCE ${NB_GRAPHICS_SOURCE} PARENT_SCOPE)
@@ -43,9 +52,54 @@ add_library(NBGraphics
     ${NB_GRAPHICS_SOURCE}
     ${GLAD_PATH}/src/glad.c
 )
-target_link_libraries(NBGraphics glfw)
+add_library(NBEngine::Graphics ALIAS NBGraphics)
+target_link_libraries(NBGraphics
+    PUBLIC glfw
+    PUBLIC NBCore    
+)
+get_target_property(GLFW_INTERFACE_INCLUDES glfw INTERFACE_INCLUDE_DIRECTORIES)
+#include_directories(${GLFW_INTERFACE_INCLUDES})
+target_include_directories(NBGraphics 
+    PUBLIC "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
+    PUBLIC "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+    PUBLIC "${STBIMAGE_PATH}"
+    PUBLIC "${GLAD_PATH}/include"
+)
 
-target_include_directories(NBGraphics PUBLIC ./.)
+if (NBENGINE_INSTALL)
+    message("Installing NBGraphics to ${CMAKE_INSTALL_PREFIX}")
+    include(GNUInstallDirs)
+    include(CMakePackageConfigHelpers)
+    install(
+        TARGETS NBGraphics
+        EXPORT NBGraphicsTargets
+    )
+    install(
+        DIRECTORY "${PROJECT_SOURCE_DIR}/include/NBGraphics"
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+        FILES_MATCHING PATTERN "*.h" PATTERN "*.hpp"
+    )
+    install(
+        EXPORT NBGraphicsTargets
+        DESTINATION ${CMAKE_INSTALL_PREFIX}/cmake
+        NAMESPACE NBEngine::
+    )
+    configure_package_config_file(
+        "NBGraphicsConfig.cmake.in"
+        "NBGraphicsConfig.cmake"
+        INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/cmake
+        PATH_VARS CMAKE_INSTALL_LIBDIR
+    )
+    write_basic_package_version_file(
+        "${CMAKE_CURRENT_BINARY_DIR}/NBGraphicsConfigVersion.cmake"
+        COMPATIBILITY AnyNewerVersion 
+    )
+    install(FILES
+        "${CMAKE_CURRENT_BINARY_DIR}/NBGraphicsConfig.cmake"
+        "${CMAKE_CURRENT_BINARY_DIR}/NBGraphicsConfigVersion.cmake"
+        DESTINATION "${CMAKE_INSTALL_PREFIX}/cmake"
+    )
+endif()
 
 if (NB_BUILD_TESTS)
     add_subdirectory(./tests)