ltrace now fails to build for all powerpc variants due to a missing definition of PTRACE_GETFPREGS, among others. Even though powerpc/sys/ptrace.h never defined it, it was probably defined previously by indirect inclusion of <asm/ptrace.h> via <sys/ucontext.h>, which doesn't happen any more.
I'm currently testing an update of sys/ptrace.h for powerpc as a part of https://sourceware.org/bugzilla/show_bug.cgi?id=22433
Fixed by commit f5f473a9d0e8fdbede858fa1ef0d01d12142367b.