我有一个变量:CMake - 制作绝对路径列表。
set(${PROJECT_NAME}_EXTERNAL_LIBRARIES
${PocoNetExternal_LIBRARIES}
)
它来源于:
set(EXTERNAL_NAME PocoNetExternal)
set(${EXTERNAL_NAME}_LIBRARIES
${PROJECT_BINARY_DIR}/${EXTERNAL_NAME}/Foundation/${CMAKE_SHARED_LIBRARY_PREFIX}PocoFoundation${POCO_build_postfix}${CMAKE_STATIC_LIBRARY_SUFFIX}
${PROJECT_BINARY_DIR}/${EXTERNAL_NAME}/Util/${CMAKE_SHARED_LIBRARY_PREFIX}PocoUtil${POCO_build_postfix}${CMAKE_STATIC_LIBRARY_SUFFIX}
${PROJECT_BINARY_DIR}/${EXTERNAL_NAME}/Net/${CMAKE_SHARED_LIBRARY_PREFIX}PocoNet${POCO_build_postfix}${CMAKE_STATIC_LIBRARY_SUFFIX}
)
由于This Question讨论过这个问题,我需要所有这些路径是相对的。
我已经试过这样:
function(makeLibPathsAbsolute)
set(temp ${${PROJECT_NAME}_EXTERNAL_LIBRARIES}) #rename list
set(external_libraries_rel) #make empty list
list(LENGTH temp len1) #len1 is length of temp list
math(EXPR len2 "${len1} - 1") #len2 is len1 - 1
foreach(val RANGE ${len2}) #for val = 0 to len2
list(GET temp ${val} relPath) #relPath becomes the {val} entry of temp
get_filename_component(absPath ${relPath} ABSOLUTE) #make relPath Absolute and call it absPath
list(APPEND external_libraries_rel ${absPath}) #Append this to the external_libraries_rel list
endforeach()
endfunction()
但是当我使用target_link_libraries(${name} ${external_libraries_rel})
我得到一个未定义的引用错误的所有有关我试图链接库中的函数。表明图书馆没有真正联系过。
我的makeLibPathsAbsolute()
功能是否正确?
你似乎没有从你的函数返回任何东西。你能检查传递给'target_link_libraries'的变量是否为空? – arrowd