Telling gcc directly to link a library statically

二次信任 提交于 2019-11-26 03:35:28

问题


It feels strange to me to use -Wl,-Bstatic in order to tell gcc which libraries I want to link with statically. After all I\'m telling gcc directly all other information about linking with libraries (-Ldir, -llibname).

Is it possible to tell the gcc driver directly which libraries should be linked statically?

Clarification: I know that if a certain library exists only in static versions it\'ll use it without -Wl,-Bstatic, but I want to imply gcc to prefer the static library. I also know that specifying the library file directly would link with it, but I prefer to keep the semantic for including static and dynamic libraries the same.


回答1:


It is possible of course, use -l: instead of -l. For example -l:libXYZ.a to link with libXYZ.a. Notice the lib written out, as opposed to -lXYZ which would auto expand to libXYZ.




回答2:


You can add .a file in the linking command:

  gcc yourfiles /path/to/library/libLIBRARY.a

But this is not talking with gcc driver, but with ld linker as options like -Wl,anything are.

When you tell gcc or ld -Ldir -lLIBRARY, linker will check both static and dynamic versions of library (you can see a process with -Wl,--verbose). To change order of library types checked you can use -Wl,-Bstatic and -Wl,-Bdynamic. Here is a man page of gnu LD: http://linux.die.net/man/1/ld

To link your program with lib1, lib3 dynamically and lib2 statically, use such gcc call:

gcc program.o -llib1 -Wl,-Bstatic -llib2 -Wl,-Bdynamic -llib3

Assuming that default setting of ld is to use dynamic libraries (it is on Linux).



来源:https://stackoverflow.com/questions/6578484/telling-gcc-directly-to-link-a-library-statically

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