[uClibc] Use GCC option -fPIC for shared objects

[Benjamin ZORES]

Hi there,

I'm currently developping  a system based on PPC and using today's 
uClibc snapshot.

My problem is the same that has already been reported there one year ago :

http://www.uclibc.org/lists/uclibc/2003-February/005756.html

Actually I've build the uClibc with my own gcc cross-compiler,
with CTOR_DTOR disabled, and -fPIC flag enabled, with support
for shared libs etc ...

My program is dynamically opening librairies via dlopen()
and report my the following error à lib's load :

~ # extractVar
Can't modify /usr/lib/mini_httpd/plugins/cpu.so's text section. Use GCC 
option -fPIC for shared objects, please.

Nevertheless, the cpu.so lib is compiled using the following flags :
-fPIC 
-Wl,-shared,-Bsymbolic,--dynamic-linker,/lib/ld-uClibc.so.0,-soname,cpu.so

So it means that nothing missing (hope I missed something :)

I've also noticed there :

http://www.uclibc.org/lists/uclibc/2002-April/003271.html

that libs compiled using the -fPIC flags should no more have the 
R_PPC_REL24 type in the elf file.

But, according to elfreader :

bash-2.05b$ readelf -r plugins/cpu.so | grep R_PPC_REL24
00000768  00001f0a R_PPC_REL24       00000000   __uClibc_main + 0

It's the only one R_PPC_REL24 section that is still present using the 
-fPIC flag.

Truely hope that someone can help me building this shared lib with no 
more R_PPC_REL24 reference.

Best Regards,

Benjamin Zores