Question

我正在制作一个使用GLEW的cmake项目。我想动态构建GLEW（不仅仅是链接编译库）。我使用add_subdirectory将第三方库添加到我的项目中。这是我的CMakeLists.txt现在的样子：

cmake_minimum_required (VERSION 2.6)
project (quokka)

#configure_file (
#  "${CMAKE_CURRENT_SOURCE_DIR}/TutorialConfig.h.in"
#  "${CMAKE_CURRENT_SOURCE_DIR}/TutorialConfig.h"
#  )

include_directories(${CMAKE_SOURCE_DIR}/../3rd_party/glew/include)
include_directories(${CMAKE_SOURCE_DIR}/../3rd_party/glfw/include)
include_directories(${CMAKE_SOURCE_DIR}/../3rd_party/freetype-2.6.2/include)
include_directories(${CMAKE_SOURCE_DIR})

set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/../../temp)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR})

SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS_DEBUG} -Wall -std=c++11")

if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    set(OUTPUT_LIB_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/../../temp/Debug)
endif ()

if(CMAKE_BUILD_TYPE STREQUAL "Release")
    set(OUTPUT_LIB_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/../../temp/Release)
endif ()

set(GLFW ${OUTPUT_LIB_DIRECTORIES}/glfw)
set(FREETYPE ${OUTPUT_LIB_DIRECTORIES}/freetype)
set(GLEW ${OUTPUT_LIB_DIRECTORIES}/glew)

add_subdirectory(${CMAKE_SOURCE_DIR}/../3rd_party/glfw/ ${CMAKE_CURRENT_SOURCE_DIR}/../../temp/lib/glfw) 
add_subdirectory(${CMAKE_SOURCE_DIR}/../3rd_party/glew/build/cmake ${CMAKE_CURRENT_SOURCE_DIR}/../../temp/lib/glew) 
add_subdirectory(${CMAKE_SOURCE_DIR}/../3rd_party/freetype-2.6.2/ ${CMAKE_CURRENT_SOURCE_DIR}/../../temp/lib/freetype) 
add_subdirectory(Input)
add_subdirectory(Process)
add_subdirectory(Application)
add_subdirectory(View)
add_subdirectory(GameLogic)
add_subdirectory(UID)
add_subdirectory(Actor)
add_subdirectory(AssetManager)
add_subdirectory(GUI)
add_subdirectory(GraphicsEngine)

add_executable(quokka main.cpp)

target_link_libraries(quokka Input ProcessLibrary Application View GameLogic UID Actor AssetManager GUI GraphicsEngine)

target_link_libraries(quokka glfw freetype)

if (UNIX)
   target_link_libraries(quokka glew Xrandr Xinerama Xi Xcursor X11 Xxf86vm pthread GL)
endif (UNIX)

if (WIN32)
   target_link_libraries(quokka glew32 opengl32)
endif (WIN32)

正如您所看到的，我为第三方库指定了输出目录（$ {CMAKE_CURRENT_SOURCE_DIR} /../../ temp / lib / glfw），它适用于GLFW和freetype，但GLEW最终会在其他地方结束。因此，我使用此设置生成Visual Studio项目，由于某种原因，GLEW的输出目录为C:\_work\quokka_plus\temp\VSProjects\bin\Debug\。因此，当我构建我的项目时，它找不到glew32.lib。为什么CMake对GLEW的行为不同于对GLFW和freetype的作用，以及如何使它在我需要的地方放置编译的lib而不触及GLEW的CMake源？

Answer 1

使用cmake构建GLEW源代码。您可以在cmake项目文件夹中创建一个名为 ./ external 的文件夹，并将GLEW代码放入该文件夹中。

有关详细信息，请参阅http://www.opengl-tutorial.org/的教程

和可运行的项目源代码：http://www.opengl-tutorial.org/download/

add_subdirectory (external)

include_directories(
    external/AntTweakBar-1.16/include/
    external/glfw-3.1.2/include/
    external/glm-0.9.7.1/
    external/glew-1.13.0/include/
    external/assimp-3.0.1270/include/
    external/bullet-2.81-rev2613/src/
    .
)

set(ALL_LIBS
    ${OPENGL_LIBRARY}
    glfw
    GLEW_1130
)

add_definitions(
    -DTW_STATIC
    -DTW_NO_LIB_PRAGMA
    -DTW_NO_DIRECT3D
    -DGLEW_STATIC
)

target_link_libraries(FOO
    ${ALL_LIBS}
)

如何构建GLEW作为CMake项目的一部分

1 个答案: