将sdl_mixer与cmake链接时出现故障

当我调用Mix_OpenAudio(…(时，我特别得到了一个未定义的引用。我可以很好地包含"SDL_mixer.h"。这是我的CMakeList.txt。很抱歉包含了所有其他包。我还将包括FindSDL_MIXER.cmake。我也可以创建SDL_Mixer数据类型。我使用apt-get-install安装了SDL_Mixer。

PROJECT(Window)
CMAKE_MINIMUM_REQUIRED(VERSION 2.6)

SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/CMakeModules")
add_definitions( -DMAGICKCORE_QUANTUM_DEPTH=16 )
add_definitions( -DMAGICKCORE_HDRI_ENABLE=0 )
FIND_PACKAGE(OpenGL REQUIRED)
FIND_PACKAGE(SDL2 REQUIRED)
FIND_PACKAGE(GLEW REQUIRED)
FIND_PACKAGE(GLM REQUIRED)
FIND_PACKAGE(Bullet REQUIRED)
FIND_PACKAGE(ASSIMP REQUIRED)
FIND_PACKAGE(ImageMagick COMPONENTS Magick++ REQUIRED )
FIND_PACKAGE(SDL_MIXER)
SET(CXX11_FLAGS "-std=gnu++11 -lassimp")
SET(CDEBUG_FLAGS -g)
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX11_FLAGS} ${CDEBUG_FLAGS}")
SET(TARGET_LIBRARIES "${OPENGL_LIBRARY} ${SDL2_LIBRARY} ${ASSIMP_LIBRARIES}")
# Find where Magick++-config lives
IF(UNIX)
ADD_DEFINITIONS(-DUNIX)
ENDIF(UNIX)
IF(NOT APPLE)
IF(GLEW_FOUND)
INCLUDE_DIRECTORIES(${GLEW_INCLUDE_DIRS})
LINK_LIBRARIES(${GLEW_LIBRARIES})
ENDIF(GLEW_FOUND)
IF(ASSIMP_FOUND)
INCLUDE_DIRECTORIES(${ASSIMP_INCLUDE_DIRS})
LINK_LIBRARIES(${ASSIMP_LIBRARIES})
ENDIF(ASSIMP_FOUND)
ENDIF(NOT APPLE)

INCLUDE_DIRECTORIES(
"${PROJECT_SOURCE_DIR}/include"
${SDL2_INCLUDE_DIR}
${GLM_INCLUDE_DIRS}
${ASSIMP_INCLUDE_DIRS}
${ImageMagick_INCLUDE_DIRS}
${BULLET_INCLUDE_DIRS}
)
# Copy shaders, models, and default config
# FILE(COPY src/shaders DESTINATION .)
# FILE(COPY models DESTINATION .)
# FILE(COPY textures DESTINATION .)
# FILE(COPY config.json DESTINATION .)

# Set Includes
SET(INCLUDES ${PROJECT_SOURCE_DIR}/include)
INCLUDE_DIRECTORIES(${INCLUDES} ${ASSIMP_INCLUDE_DIRS} ${ImageMagick_INCLUDE_DIRS} ${BULLET_INCLUDE_DIRS})
# Set sources
FILE(GLOB_RECURSE SOURCES "src/*.cpp")
ADD_EXECUTABLE(${PROJECT_NAME} ${SOURCES})
add_custom_target("${PROJECT_NAME}_SUCCESSFUL" ALL
DEPENDS ${PROJECT_NAME}
COMMAND ${CMAKE_COMMAND} -E echo ""
COMMAND ${CMAKE_COMMAND} -E echo "====================="
COMMAND ${CMAKE_COMMAND} -E echo "  Compile complete!"
COMMAND ${CMAKE_COMMAND} -E echo "====================="
COMMAND ${CMAKE_COMMAND} -E echo "${CMAKE_CURRENT_BINARY_DIR}"
)
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${OPENGL_LIBRARY} ${SDL2_LIBRARY} ${ASSIMP_LIBRARY} ${ImageMagick_LIBRARIES} ${BULLET_LIBRARIES} ${SDL_MIXER_LIBRARY})

现在是FindSDL_MIXER.cmake.

#
# Find SDL_MIXER
#
# Additional modules
include(FindPackageHandleStandardArgs)
# Find include files
find_path(
SDL_MIXER_INCLUDE_DIR
PATHS
/usr/include
/usr/local/include
/sw/include
/opt/local/include
${SDL_MIXER_ROOT_DIR}/include
DOC "The directory where SDL_mixer.h resides")
# Handle REQUIRD argument, define *_FOUND variable
#find_package_handle_standard_args(SDL_MIXER_INCLUDE_DIR)
# Hide some variables
mark_as_advanced(SDL_MIXER_INCLUDE_DIR)