2010/6/6 Lukáš Jirkovský <l.jirkovsky@xxxxxxxxx>: >>> >> >> Oh, now I see where the problem is. There are several includes named ucontext.h >> >> Lukas >> > > OK, that's not the problem. I tried compiling it with -save-temps > option passed to gcc and I see that the correct file is included but > for some reason the #ifdef __USE_GNU part is not included even though > __USE_GNU is defined before #include <ucontext.h> > > Any ideas? > Anyway, if I copy the part #ifdef __USE_GNU /* Number of each register in the `gregset_t' array. */ enum { REG_R8 = 0, # define REG_R8 REG_R8 … # define REG_CR2 REG_CR2 }; #endif from the sys/ucontext.h to another file the enum is included correctly and application.c compiles.