# 设置编译选项
if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows")
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2")
endif()

if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux")
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -lm -O2")
endif()

if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin")
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2")
endif()


# 设置库文件的输出地址
set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/lib)

# 设定库源文件
aux_source_directory(. LIBTESS_SRC)

# 以下部分为库的编译
# 注意目标名必须唯一 所以不能直接生成相同名称的动态库与静态库
# 注意此处不必为目标名称添加lib前缀和相应后缀，cmake会自行添加
add_library(tess SHARED ${LIBTESS_SRC})
# 首先添加静态库的生成命令
add_library(tess_static STATIC ${LIBTESS_SRC})
# 设置静态库的输出名称从而获得与动态库名称相同的静态库
set_target_properties(tess_static PROPERTIES OUTPUT_NAME "tess")
# 设置输出目标属性以同时输出动态库与静态库
set_target_properties(tess PROPERTIES CLEAN_DIRECT_OUTPUT 1)
set_target_properties(tess_static PROPERTIES CLEAN_DIRECT_OUTPUT 1)
# 设置动态库的版本号
set_target_properties(tess PROPERTIES VERSION 1.6 SOVERSION 1.6)

# 链接动态库
if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux")
	target_link_libraries(tess PUBLIC m)
	target_link_libraries(tess_static m.a)
endif()

# 库的安装命令 安装到/opt/lib
if(WIN32)
	install(TARGETS tess DESTINATION lib)
	install(TARGETS tess_static DESTINATION lib)
else()
	install(TARGETS tess tess_static
	LIBRARY DESTINATION lib
	ARCHIVE DESTINATION lib)
endif()

# 头文件安装命令
file(GLOB LIBTESS_HEAD *.h)
# 安装到/opt/include/tess
install(FILES ${LIBTESS_HEAD} DESTINATION include/tess)