Question

我希望CMake在同一个文件夹中找到三个静态库。这是我的CMakeLists.txt的一部分，我正在努力：

# Dependencies' directories
set(OGRE3D_DIR "D:/Data/Libs/ogre3D-1.10")

# Required libraries
find_library(OGREMAIN_LIB
        NAMES OgreMain OgreMain_d
        HINTS "${OGRE3D_DIR}/lib/${CMAKE_BUILD_TYPE}")

find_library(OGREOVERLAY_LIB
        NAMES OgreOverlay OgreOverlay_d
        HINTS "${OGRE3D_DIR}/lib/${CMAKE_BUILD_TYPE}")

find_library(OIS_LIB
        NAMES OIS OIS_d
        HINTS "${OGRE3D_DIR}/lib/${CMAKE_BUILD_TYPE}")

# Target
add_executable(Test Main.cpp)

# Library linking
target_link_libraries(Test
        ${OGREMAIN_LIB}
        ${OGREOVERLAY_LIB}
        ${OIS_LIB})

出于某种原因，三个变量OGREMAIN_LIB，OGREOVERLAY_LIB和OIS_LIB都设置为NOTFOUND，但如果我尝试打印它们，我发现它们已设置为预期路径（即使是后缀和非后缀名称之间的正确路径也被选中）。显然，所有库都在预期的路径中。

我在这里做错了什么？

Answer 1

我无法重现你的问题。 find_library()调用确实正确缓存了调查结果。

以你的例子并添加一些空的占位符来运行测试，我认为它的工作正常：

cmake_minimum_required(VERSION 2.6)

# Dependencies' directories
set(OGRE3D_DIR "ogre3D-1.10")
set(OGRE3D_LIB_DIR "${OGRE3D_DIR}/lib/${CMAKE_BUILD_TYPE}")

file(WRITE "${OGRE3D_LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}OgreMain${CMAKE_STATIC_LIBRARY_SUFFIX}" "")
file(WRITE "${OGRE3D_LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}OgreOverlay${CMAKE_STATIC_LIBRARY_SUFFIX}" "")
file(WRITE "${OGRE3D_LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}OIS${CMAKE_STATIC_LIBRARY_SUFFIX}" "")

# Required libraries
find_library(OGREMAIN_LIB
        NAMES OgreMain OgreMain_d
        HINTS "${OGRE3D_LIB_DIR}")

find_library(OGREOVERLAY_LIB
        NAMES OgreOverlay OgreOverlay_d
        HINTS "${OGRE3D_LIB_DIR}")

find_library(OIS_LIB
        NAMES OIS OIS_d
        HINTS "${OGRE3D_LIB_DIR}")

foreach(_var IN ITEMS OGREMAIN_LIB OGREOVERLAY_LIB OIS_LIB)
    get_property(_var_cached CACHE ${_var} PROPERTY VALUE)
    message(STATUS "CACHED path: ${_var_cached}")
    message(STATUS "path: ${${_var}}")
endforeach()

# Target
file(WRITE main.cpp "int main() { return 0; }")
add_executable(Test Main.cpp)

# Library linking
target_link_libraries(Test
        ${OGREMAIN_LIB}
        ${OGREOVERLAY_LIB}
        ${OIS_LIB})

你可以尝试一下我的最小例子吗？我认为你的问题必须对你的环境做些什么。

Answer 2

像这样添加$ {CMAKE_SHARED_LIBRARY_PREFIX}和$ {CMAKE_SHARED_LIBRARY_SUFFIX}怎么样？

find_library(OGREMAIN_LIB
    NAMES ${CMAKE_SHARED_LIBRARY_PREFIX}OgreMain${CMAKE_SHARED_LIBRARY_SUFFIX} ${CMAKE_SHARED_LIBRARY_PREFIX}OgreMain_d${CMAKE_SHARED_LIBRARY_SUFFIX}
    HINTS "${OGRE3D_LIB_DIR}")

CMake的find_library（）显然没有找到库

2 个答案: