This package supports working with patch files using quilt. To regenerate the quilt series file run: ./gen-quilt-series.sh Setup environment: export QUILT_PATCHES=$PWD Setup the source: ./quilt-patch.sh [-f] Use `-f` if you want to have quilt-patch always remove the existing source directory before starting. Otherwise you'll be patching on top of an already patched tree generated perhaps by `*pkg prep`. Create a new patch: cd glibc-2.17-c758a686/ quilt new glibc-rh1234622.patch quilt add ports/sysdeps/unix/sysv/linux/aarch64/nptl/libpthread.abilist vi ports/sysdeps/unix/sysv/linux/aarch64/nptl/libpthread.abilist quilt refresh cd .. git add glibc-rh1234622.patch <Then edit the glibc.spec file to build with the new patch> e.g. ... PatchXXXX: glibc-rh1234622.patch ... %patchXXXX -p1 ... git add glibc.spec git commit You're done!