CMakeLists.txt

project(lamewavtomp3)
include(ExternalProject)
find_package (Threads)

cmake_minimum_required(VERSION 3.4.3 FATAL_ERROR)
aux_source_directory(. SRC_LIST)

add_executable(${PROJECT_NAME} ${SRC_LIST})

target_include_directories(${PROJECT_NAME} 
						   PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5/include)
add_library(mp3lame_lib STATIC IMPORTED)
if(WIN32)
	target_include_directories(${PROJECT_NAME} 
							   PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/deps/pthreads-w32-2-9-1-release/pthreads.2
							   PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/deps/dirent-1.10)
    add_library(pthread_lib STATIC IMPORTED)
		
	ExternalProject_Add(
		libpthread
		PREFIX ${CMAKE_CURRENT_SOURCE_DIR}/deps/pthreads-w32-2-9-1-release/pthreads.2
		SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/deps/pthreads-w32-2-9-1-release/pthreads.2
		BUILD_COMMAND nmake clean VC-static
		BUILD_IN_SOURCE 1
	)
	
	ExternalProject_Add(
	  libmp3lame
	  PREFIX ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5
	  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5
	  BUILD_COMMAND nmake -f Makefile.MSVC  comp=msvc  asm=no clean libmp3lame-static.lib
	  BUILD_IN_SOURCE 1
	)
	ExternalProject_Get_Property(libmp3lame install_dir)
	set_target_properties(mp3lame_lib PROPERTIES
		IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5/output/libmp3lame-static.lib)

	set_target_properties(pthread_lib PROPERTIES
		IMPORTED_LOCATION  ${CMAKE_CURRENT_SOURCE_DIR}/deps/pthreads-w32-2-9-1-release/pthreads.2/pthreadVC2.lib)
	add_dependencies(${PROJECT_NAME} libpthread)
	add_dependencies(${PROJECT_NAME} libmp3lame)
	target_link_libraries(${PROJECT_NAME} PRIVATE pthread_lib)
else()
	ExternalProject_Add(
	  libmp3lame
	  SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5
	  CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5/configure --prefix=${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5
	  PREFIX ${CMAKE_CURRENT_SOURCE_DIR}/deps/lame-3.99.5
	  BUILD_COMMAND make
	  BUILD_IN_SOURCE 1
	)
	ExternalProject_Get_Property(libmp3lame install_dir)
	add_definitions(-std=c++14 -Werror -Wall)
    set_target_properties(mp3lame_lib PROPERTIES
        IMPORTED_LOCATION ${install_dir}/lib/libmp3lame.a)
	add_dependencies(${PROJECT_NAME} libmp3lame)
endif()
#target_compile_features(${PROJECT_NAME} PUBLIC cxx_variadic_templates)

target_link_libraries(${PROJECT_NAME} PRIVATE mp3lame_lib)
target_link_libraries(${PROJECT_NAME} PRIVATE ${CMAKE_THREAD_LIBS_INIT})