On Tue, 15 May 2018 11:16:43 +0200, Jesper Dangaard Brouer wrote: > > $ cd tools/lib/bpf/ > > $ make > > > > Auto-detecting system features: > > ... libelf: [ on ] > > ... bpf: [ on ] > > > > Warning: Kernel ABI header at 'tools/include/uapi/linux/bpf.h' differs from > > latest version at 'include/uapi/linux/bpf.h' > > Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h' differs > > from latest version at 'include/uapi/linux/if_link.h' > > CC libbpf.o > > CC bpf.o > > CC nlattr.o > > CC btf.o > > LD libbpf-in.o > > LINK libbpf.a > > LINK libbpf.so > > SOLVED > > It seems that the "Auto-detecting system" needed a 'make clean'. > My problem goes away when I did the following: > > $ cd tools/ > $ make clean > > $ cd lib/bpf/ > $ make > > Auto-detecting system features: > ... libelf: [ on ] > ... bpf: [ on ]
Interesting! I've seen the same thing (on Fedora, not sure distro is relevant). I tracked it down to dependency files (*.d) in tools/build/features/ containing a reference to a sigset.h header which didn't exist :S I did git clean -xdf to fix my tree. Thanks for testing and sorry about the breakage!
