如何使用cmake查找库？

Question

要将可执行文件与驻留在标准位置的库链接,可以在CmakeLists.txt文件中执行以下操作:

create_executable(generate_mesh generate_mesh.cpp)
target_link_libraries(generate_mesh OpenMeshCore)

如果放入链接的库,则这将起作用

/usr/local/lib/libOpenMeshCore.dylib

但是,在这种情况下,库位于

/usr/local/lib/OpenMesh/libOpenMeshCore.dylib

如何指定target_link_libraries应该真正链接到sibdirectory中的库？我想知道target_link_libraries有一些有用的选项可以指定库位于标准位置的子目录中,例如

target_link_libraries(generate_mesh OpenMesh/OpenMeshCore)

如果这是不可能的,有没有办法使用find_library /usr/local/lib递归搜索给定的库文件,包括其子目录？

Answer 1

您可以添加不同的目录find_library.要使用此库,请调用cmake by cmake -DFOO_PREFIX=/some/path ....

find_library( CPPUNIT_LIBRARY_DEBUG NAMES cppunit cppunit_dll cppunitd cppunitd_dll
            PATHS   ${FOO_PREFIX}/lib
                    /usr/lib
                    /usr/lib64
                    /usr/local/lib
                    /usr/local/lib64
            PATH_SUFFIXES debug )

find_library( CPPUNIT_LIBRARY_RELEASE NAMES cppunit cppunit_dll
            PATHS   ${FOO_PREFIX}/lib
                    /usr/lib
                    /usr/lib64
                    /usr/local/lib
                    /usr/local/lib64
            PATH_SUFFIXES release )

if(CPPUNIT_LIBRARY_DEBUG AND NOT CPPUNIT_LIBRARY_RELEASE)
    set(CPPUNIT_LIBRARY_RELEASE ${CPPUNIT_LIBRARY_DEBUG})
endif(CPPUNIT_LIBRARY_DEBUG AND NOT CPPUNIT_LIBRARY_RELEASE)

set( CPPUNIT_LIBRARY debug     ${CPPUNIT_LIBRARY_DEBUG}
                    optimized ${CPPUNIT_LIBRARY_RELEASE} )

# ...
target_link_libraries(foo ${CPPUNIT_LIBRARY})