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如何修复此cmake文件?-链接到导入的库时出现问题

cmake

2

Steve314 · 技术社区 · 16 年前

我只是从cmake开始,尝试建立一个相当简单的项目。尽管项目本身很简单,但它链接到许多不是由cmake构建的静态库。我想,它们可能是——它们是我的库——但我需要弄清楚如何链接到第三方库。

这是我到目前为止得到的。。。

cmake_minimum_required(VERSION 2.8.1)
cmake_policy(VERSION 2.8.1)

project( test01 )

include_directories("../../cpplib/sh_core" "../../cpplib/sh_core2" "../../cpplib/sh_genlib")

link_directories("../../cpplib/_vc_debug")

add_library( sh_core   STATIC IMPORTED )
add_library( sh_core2  STATIC IMPORTED )
add_library( sh_genlib STATIC IMPORTED )

add_executable( test01 test01 test01_ast test01_parse test01_scan test01_main )
target_link_libraries(test01 sh_core sh_core2 sh_genlib)

问题是我试图链接到的三个库在生成的项目文件中没有被正确引用。它们被列为 sh_core-NOTFOUND , sh_core2-NOTFOUND 和 sh_genlib-NOTFOUND .

认为也许我不需要 link_directories 从上面看,但我需要一个 find_library

所以。。。我怎么告诉cmake在哪里可以找到那些图书馆?

额外的问题-如何设置它,使生成的项目同时处理调试版本和发布版本?注意-导入库的版本具有相同的文件名,但位于“../../cpplib/\u vc\u release”文件夹中。

2 回复 | 直到 16 年前

1

6

the_void 15 年前

我想你误解了 include_directories 和 add_library

include_directories 添加要搜索包含文件的目录,而 add_library 可以这样使用(在您的情况下):

add_library(core UNKNOWN IMPORTED)
set_target_properties(core PROPERTIES IMPORTED_LOCATION "../../cpplib/_vs_release/core.lib")

但是,如果我正确理解了您要实现的目标,那么像这样的事情应该可以做到:

set(CPPLIB_DIR "${CMAKE_SOURCE_DIR}/../../cpplib")

set(CPPLIB_DEBUG_DIR "${CPPLIB_DIR}/_vc_debug")
set(CPPLIB_RELEASE_DIR "$(CPPLIB_DIR}/_vc_release")

if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
    set(CPPLIB_LIB_HINT ${CPPLIB_RELEASE_DIR})
else ()
    set(CPPLIB_LIB_HINT ${CPPLIB_DEBUG_DIR})
endif ()

find_library(CPPLIB_CORE_LIBRARY NAMES "core"
                                 PATHS ${CPPLIB_LIB_HINT})

find_library(CPPLIB_CORE2_LIBRARY NAMES "core2"
                                  PATHS ${CPPLIB_LIB_HINT})

find_library(CPPLIB_GENLIB_LIBRARY NAMES "genlib"
                                   PATHS ${CPPLIB_LIB_HINT})

if (("${CPPLIB_CORE_LIBRARY}" STREQUAL "CPPLIB_CORE_LIBRARY-NOTFOUND") OR
    ("${CPPLIB_CORE2_LIBRARY}" STREQUAL "CPPLIB_CORE2_LIBRARY-NOTFOUND") OR
    ("${CPPLIB_GENLIB_LIBRARY}" STREQUAL "CPPLIB_GENLIB_LIBRARY-NOTFOUND"))
    message(FATAL_ERROR "One of the libs wasn't found!")
endif ()

set(CPPLIB_LIBRARIES ${CPPLIB_CORE_LIBRARY} ${CPPLIB_CORE2_LIBRARY} ${CPPLIB_GENLIB_LIBRARY})

target_link_libraries(my_exe ${CPPLIB_LIBRARIES})

find_path(CPPLIB_INCLUDE_DIR "my_header.h"
    PATHS ${CPPLIB_HINT_INCLUDE_DIR})

...

include_directories(${CPPLIB_INCLUDE_DIR})

2

1

Community Mohan Dere 9 年前

后续行动 the_void's answer :

您应该能够简化if测试表达式,其内容如下:

if (("${CPPLIB_CORE_LIBRARY}" STREQUAL "CPPLIB_CORE_LIBRARY-NOTFOUND") OR
    ("${CPPLIB_CORE2_LIBRARY}" STREQUAL "CPPLIB_CORE2_LIBRARY-NOTFOUND") OR
    ("${CPPLIB_GENLIB_LIBRARY}" STREQUAL "CPPLIB_GENLIB_LIBRARY-NOTFOUND"))
    message(FATAL_ERROR "One of the libs wasn't found!")
endif ()

像这样:

if (CPPLIB_CORE_LIBRARY OR
    CPPLIB_CORE2_LIBRARY OR
    CPPLIB_GENLIB_LIBRARY)
    message(FATAL_ERROR "One of the libs wasn't found!")
endif ()

参考 CMake's if statement .