Link glibc statically but some other library dynamically with GCC

Question

I need to statically link glibc to my project, because the target platform supports only a very old one ( but it works with statically linked glibc from my toolchain, I have checked it)

Unfortunately, this application has to make use of pthread library, but statically linked libpthread takes too much space.

I would like to statically link glibc, and dynamically pthread.

After running this command

powerpc-unknown-linux-gnu-gcc object_files -lrt -lpthread -Wl,-Bstatic -lc

I get:

/powerpc-unknown-linux-gnu/bin/ld: cannot find -lgcc_s

Oh, I'm sorry it was my mistake. I wanted to link glibc statically — nkdm
– nkdm, Commented Nov 2, 2012 at 0:29

Anycorn · Accepted Answer · 2012-11-02 00:32:12Z

11

There is a -static-libgcc if that may help

answered Nov 2, 2012 at 0:32

Anycorn

51.8k45 gold badges173 silver badges267 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Anycorn Over a year ago

@nkdm then you need to go with R..'s suggestion of uclibc

Doug Richardson Over a year ago

For the record libgcc is not glibc (which is what the title of this SO question is about). glibc is the GNU implementation of the C standard library. libgcc is part of the gcc internals and is used by gcc "whenever it needs to perform some operation that is too complicated to emit inline code for".

drizzt Over a year ago

Why is this answer accepted since it's completely wrong?

R.. GitHub STOP HELPING ICE · Accepted Answer · 2012-11-02 00:38:51Z

10

You should be using -static, not -Wl,-static. The latter bypasses gcc's knowledge, and therefore gcc is still trying to link the shared libgcc_s.so rather than the static libgcc_eh.a.

If your aim is to link libc statically but libpthread dynamically, this is simply not going to work. You cannot mix and match different versions of libpthread; it's part of glibc, just a separate file, and the internals need to match. Even with the same version, I think linking libc statically and libpthread dynamically will be very broken.

If glibc is too big for your needs, you could try an alternate libc like uClibc or musl.

edited Nov 2, 2012 at 0:38

answered Nov 2, 2012 at 0:29

R.. GitHub STOP HELPING ICE

217k36 gold badges404 silver badges744 bronze badges

1 Comment

nkdm Over a year ago

But I need to have lpthread linked dynamically. The -static option will link everything statically.

Collectives™ on Stack Overflow

Link glibc statically but some other library dynamically with GCC

2 Answers 2

3 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related