Completely static linking with clang

问题:

How can I generate completely static binaries with clang? I have used the following command:

clang -flto <source files> -o <executable output> -fuse-ld=lld -static-libgcc -lc -Bstatic -m32

And yet, the generated output depends on a certain .so file:

$ ldd <executable output file>
    linux-gate.so.1 =>  (0xf77dd000)
    libc.so.6 => /lib/libc.so.6 (0xf75f0000)
    /lib/ld-linux.so.2 (0x5663b000)

The following answer tries to answer the question but doesn't directly address the problem. Is it even possible, to generate completely independent binaries? Or should I have resort to using other different C library implementations other than libgcc?

If yes, then how do I link it with clang if I have the source code, of for example newlib?

回答1:

Just compile it using the clang's -static flag.

On your case, try:

clang -flto <source files> -o <executable output> -static -m32

The results on my test program show:

[root@interserver ogrerobot.com]# ldd ./CppUtilsSpikes  
not a dynamic executable