# 15.3 检测所需的链接和依赖关系 现在已经生成了所有文件，让我们重新构建。我们应该能够配置和编译源代码，不过不能链接: ```shell $ mkdir -p build $ cd build $ cmake .. $ cmake --build . ... Scanning dependencies of target vim [ 98%] Building C object src/CMakeFiles/vim.dir/main.c.o [100%] Linking C executable ../bin/vim ../lib64/libbasic_sources.a(term.c.o): In function `set_shellsize.part.12': term.c:(.text+0x2bd): undefined reference to `tputs' ../lib64/libbasic_sources.a(term.c.o): In function `getlinecol': term.c:(.text+0x902): undefined reference to `tgetent' term.c:(.text+0x915): undefined reference to `tgetent' term.c:(.text+0x935): undefined reference to `tgetnum' term.c:(.text+0x948): undefined reference to `tgetnum' ... many other undefined references ... ``` 同样，可以从Autotools编译中获取日志文件，特别是链接行，通过在`src/CMakeLists.txt`中添加以下代码来解决缺少的依赖关系: ```cmake # find X11 and link to it find_package(X11 REQUIRED) if(X11_FOUND) target_link_libraries(vim PUBLIC ${X11_LIBRARIES} ) endif() # a couple of more system libraries that the code requires foreach(_library IN ITEMS Xt SM m tinfo acl gpm dl) find_library(_${_library}_found ${_library} REQUIRED) if(_${_library}_found) target_link_libraries(vim PUBLIC ${_library} ) endif() endforeach() ``` 我们可以添加一个库的依赖目标，并且不需要构建，以及不需要将库目标放在一个列表变量中，否则将破坏CMake代码的自变量，特别是对于较大的项目而言。 修改之后，编译和链接: ```shell $ cmake --build . ... Scanning dependencies of target vim [ 98%] Building C object src/CMakeFiles/vim.dir/main.c.o [100%] Linking C executable ../bin/vim [100%] Built target vim ``` 现在，我们可以执行编译后的二进制文件，我们新编译的Vim就可使用了!