Add CMake compatibility for MinGW

CMakeLists.txt

@@ -0,0 +1,50 @@
+cmake_minimum_required(VERSION 3.15)
+project(mp4 VERSION 1.0)
+
+
+set(LIB_SOURCES
+      src/mp4.c
+      src/mp4_box_reader.c
+      src/mp4_box_writer.c
+      src/mp4_demux.c
+      src/mp4_mux.c
+      src/mp4_track.c
+)
+
+add_library(${PROJECT_NAME} SHARED ${LIB_SOURCES})
+
+# checks if set up rpath exists for install
+if(COMMAND set_up_rpath)
+    set_up_rpath()
+else()
+    message("Set up rpath not defined!")
+endif()
+
+option(BUILD_SHARED_LIBS "Build using shared libraries" ON)
+set_target_properties(${PROJECT_NAME} PROPERTIES
+                    POSITION_INDEPENDENT_CODE ${BUILD_SHARED_LIBS}
+)
+
+target_include_directories(${PROJECT_NAME} PUBLIC
+                            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+                            $<INSTALL_INTERFACE:include>
+)
+
+target_compile_definitions(${PROJECT_NAME} PRIVATE "MP4_API_EXPORTS")
+target_compile_options(${PROJECT_NAME} PRIVATE "-fvisibility=hidden")
+target_compile_options(${PROJECT_NAME} PRIVATE "-std=gnu99")
+
+if(WIN32)
+  target_link_libraries(${PROJECT_NAME} ws2_32)
+endif()
+
+target_link_libraries(${PROJECT_NAME} futils ulog)
+
+install(TARGETS ${PROJECT_NAME}
+    EXPORT ${PROJECT_NAME}-targets
+    PUBLIC_HEADER DESTINATION include
+    ARCHIVE DESTINATION lib
+    LIBRARY DESTINATION lib
+    RUNTIME DESTINATION bin
+)
+