I'm having problem using a locally-compiled LAPACK with gfortran/gcc4.4.3
I have a library (a shared library) that uses Lapack, wich needs to be compiled with specific flags : -fno-underscoring (for historical reasons) and -fPIC (to be called from the dynamic loader). So, I compile it locally. I'm surely not getting the best optimisation (to say the least..) but it's enough for our needs, and this has been working for some years, now.
I recently tried to compile it with gfortran/gcc4.4.3. The compilation runs OK, so does the compilation of the library which uses LaPack.
But when I try to compile a simple test program which uses my library, I get the message :
/usr/bin/ld: test_oper: hidden symbol `__powisf2' in /usr/lib/gcc/x86_64-manbo-linux-gnu/4.4.3/libgcc.a(_powisf2.o) is referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output
I learned through Google that I'm not the only one facing this problem : ask "lapack __powisf2 gfortran hidden", an you'll see that people porting numpy to FreeBSD have gotten the same message.
But... I've not been smart enough to find a solution from what I've read on the web.
I think it's probably more a gcc problem than a Lapack problem, but I hope that some of you may already have hit this error, and found a solution.
Some details :
The machine is a x86_64 running GNU/Linux, kernel 188.8.131.52-server-2mnb (mandriva2010.1)
gfortran -v says : "gcc version 4.4.3 (GCC)" and "Target: x86_64-manbo-linux-gnu"
Same results with lapack 3.1.1. and 3.2.2
I didn't succeed in attaching my make.inf file. ask me if you want to check it.