Add cimgui

engine/libs/cimgui/CMakeLists.txt

@@ -0,0 +1,67 @@
+cmake_minimum_required(VERSION 3.15)
+cmake_policy(SET CMP0091 NEW)
+project(cimgui)
+
+set (CMAKE_CXX_STANDARD 11)
+
+if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_tables.cpp)
+	set(TABLES_SOURCE "imgui/imgui_tables.cpp")
+else()
+	set(TABLES_SOURCE "")
+endif()
+
+
+#general settings
+file(GLOB IMGUI_SOURCES
+    cimgui.cpp
+    imgui/imgui.cpp
+    imgui/imgui_draw.cpp
+    imgui/imgui_demo.cpp
+    imgui/imgui_widgets.cpp
+	${TABLES_SOURCE}
+)
+
+set(IMGUI_STATIC "no" CACHE STRING "Build as a static library")
+set(IMGUI_FREETYPE "no" CACHE STRING "Build with freetype library")
+set(IMGUI_LIBRARIES )
+
+if(IMGUI_FREETYPE)
+	FIND_PACKAGE(freetype REQUIRED PATHS ${FREETYPE_PATH})
+	list(APPEND IMGUI_LIBRARIES freetype)
+	list(APPEND IMGUI_SOURCES imgui/misc/freetype/imgui_freetype.cpp)
+	add_definitions("-DCIMGUI_FREETYPE=1")
+endif(IMGUI_FREETYPE)
+
+#add library and link
+if (IMGUI_STATIC)
+    add_library(cimgui STATIC ${IMGUI_SOURCES})
+else (IMGUI_STATIC)
+    add_library(cimgui SHARED ${IMGUI_SOURCES})
+endif (IMGUI_STATIC)
+
+target_compile_definitions(cimgui PUBLIC IMGUI_DISABLE_OBSOLETE_FUNCTIONS=1)
+if (WIN32)
+    target_compile_definitions(cimgui PUBLIC IMGUI_IMPL_API=extern\t\"C\"\t__declspec\(dllexport\))
+    list(APPEND IMGUI_LIBRARIES imm32)
+else (WIN32)
+    target_compile_definitions(cimgui PUBLIC IMGUI_IMPL_API=extern\t\"C\"\t)
+endif (WIN32)
+
+target_include_directories(cimgui PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+target_include_directories(cimgui PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/imgui)
+set_target_properties(cimgui PROPERTIES PREFIX "")
+target_link_libraries(cimgui ${IMGUI_LIBRARIES})
+
+#install
+install(TARGETS cimgui
+    RUNTIME DESTINATION  .
+    LIBRARY DESTINATION  .
+    ARCHIVE DESTINATION  .
+)
+
+#test
+set(CIMGUI_TEST "no" CACHE STRING "Enable compilation of a test unit based on imgui null")
+
+if (CIMGUI_TEST)
+  add_subdirectory(test)
+endif ()