On Fr, 2012-09-21 at 09:53 -0700, Ian Lance Taylor wrote: > On Fri, Sep 21, 2012 at 6:30 AM, Johannes Ziegenbalg > <johannes.ziegenbalg@xxxxxxxxx> wrote: > > > > I hope you can Help me with this. I wrote a GCC plugin for cloning > > functions. This plugin also builds the resolver function and converts > > the original function into a gnu_indirect_function. > > > > Now i got a problem, I'm compiling some Fortran code witch uses OpenMP > > pragmas. Everything went fine, except for linking everything together. > > There always is an SIGSEV or an error like: > > "/usr/bin/ld: dynamic STT_GNU_IFUNC symbol '...' with pointer equality > > in '...' can not be used when making an executable; recompile with -fPIE > > and relink with -pie" > > > > I know the error comes from the "_bfd_elf_allocate_ifunc_dyn_relocs" > > function. I also found out that compiling with the -fopenmp option > > causes the problems. > > I can't figure out where exactly the problem is. Is the IFUNC attribute > > not compatible with OpenMP or pthreads? Or is it a Bug? > > GNU indirect functions, also known as IFUNCs, do not support pointer > equality, unless you compile with -fPIE and link with -pie. The > linker is trying to tell you that you are comparing an IFUNC for > pointer equality. > > If you don't mean to do that, you need to look at your generated asm > code to find out what is going on. > > Ian Thanks for your help. The artificial OpenMP functions caused the problems. I don't know why but I don't need them anyways. Johannes Z.
