Linking partially static and partially dynamic in GCC

Question

I\'m trying to compile a very simple (as simple as hello world) C program using both dynamic and static linking with GCC. I want to know how to do this in general, so my min

Answer 1

The following worked for me

ln -s `gcc -print-file-name=libc.a`
gcc -static-libgcc -L. -lc test.c

Then ldd a.out gives:

not a dynamic executable

Edit:

The OP wants to link one library dynamically and another statically. He have the example of linking libc statically and libm dynamically. That particular case I have not been able to achieve. However, the opposite is possible i.e. linking libc dynamically and libm statically.

ln -s `gcc -print-file-name=libm.a`
gcc test.c -L. -lm

then ldd a.out gives

libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0x41960000)
/lib/ld-linux.so.2 (0x4193d000)

Note that the link order matters.e.g gcc -L. -lm test.c does not work.

This works with other libraries as well. For example gomp

gcc -fopenmp test.c

ldd shows libgomp.so.1. We can link it statically like this

ln -s `gcc -print-file-name=libgomp.a`
gcc -L. -fopenmp test.c

Now ldd a.out does not show libgomp.so.1. But in this case pthreads is still linked dynamically. To link pthreads statically requires that libc be linked statically as well.