This package appears to include a private copy of valgrind.h. In the latest relase of valgrind 3.10.0 a bug was fixed for ppc32 and support was added for aarch64 and ppc64le. Please either update the private copy of valgrind.h (memcheck.h, callgrind.h, etc) or (better) make your package BuildRequires: valgrind-devel and use the system installed headers.
Fixed in http://pkgs.fedoraproject.org/cgit/gcr.git/commit/?id=40a8f72a6b8464b22f30ff2155fda783b74d6baa
(In reply to Kalev Lember from comment #1) > Fixed in > http://pkgs.fedoraproject.org/cgit/gcr.git/commit/ > ?id=40a8f72a6b8464b22f30ff2155fda783b74d6baa Wrong bug. Bug 1141470 is against gcr :-)
Fixed in http://pkgs.fedoraproject.org/cgit/libsecret.git/commit/?id=564777d90ad2c6c31cda9062db37c9f72ac1d0c2