Quentin Monnet a89b2cbf71 tools, bpf: Fix build for 'make -s tools/bpf O=<dir>' ... Building selftests with 'make TARGETS=bpf kselftest' was fixed in commit 55d554f5d1 ("tools: bpf: Use !building_out_of_srctree to determine srctree"). However, by updating $(srctree) in tools/bpf/Makefile for in-tree builds only, we leave out the case where we pass an output directory to build BPF tools, but $(srctree) is not set. This typically happens for: $ make -s tools/bpf O=/tmp/foo Makefile:40: /tools/build/Makefile.feature: No such file or directory Fix it by updating $(srctree) in the Makefile not only for out-of-tree builds, but also if $(srctree) is empty. Detected with test_bpftool_build.sh. Fixes: 55d554f5d1 ("tools: bpf: Use !building_out_of_srctree to determine srctree") Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Link: https://lore.kernel.org/bpf/20191119105626.21453-1-quentin.monnet@netronome.com		2019-11-24 16:58:45 -08:00
..
bpftool	tools, bpftool: Fix warning on ignored return value for 'read'	2019-11-24 16:58:44 -08:00
.gitignore	tools: bpf: account for generated feature/ and libbpf/ directories	2019-08-31 00:38:16 +02:00
bpf_asm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 232	2019-06-19 17:09:06 +02:00
bpf_dbg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 232	2019-06-19 17:09:06 +02:00
bpf_exp.l
bpf_exp.y	tools, bpf_asm: Warn when jumps are out of range	2019-11-07 16:01:34 +01:00
bpf_jit_disasm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 232	2019-06-19 17:09:06 +02:00
Makefile	tools, bpf: Fix build for 'make -s tools/bpf O=<dir>'	2019-11-24 16:58:45 -08:00
Makefile.helpers	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00