我不断得到
ld: library not found for -lchaiscript_stdlib-5.3.1.so
clang: error: linker command failed with exit code 1 (use -v to see invocation)
尝试链接到.so文件时。
我正在使用这个命令：
clang++ Main.cpp -o foo -L./ -lchaiscript_stdlib-5.3.1.so
我究竟做错了什么？
文件libchaiscript_stdlib-5.3.1.so与文件Main.cpp位于同一目录中。我认为-L./会将.so添加到库搜索路径中。
Yes, the -L option adds the search path, but the linker adds the .so (or .a) suffix itself (just like it adds the lib prefix). So you only need to have -lchaiscript_stdlib-5.3.1 and the linker will find it.
You can also skip the adding of the path, and link directly with the file:
clang++ Main.cpp -o foo libchaiscript_stdlib-5.3.1.so
Note that the runtime linker (which is what actually loads the shared libraries when you run your program) might not be able to find the library if it's not in the runtime linker's path. You can tell the (compile time) linker to add a path to the shared-library path in the generated program though:
clang++ Main.cpp -o foo libchaiscript_stdlib-5.3.1.so -Wl,-rpath,/absolute/path
The -Wl option tells the compiler front-end to pass an option to the linker, and the linker option -rpath adds a path to the runtime-linker search path.