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selftests/bpf: Honor $(O) when figuring out paths 

When building the kselftests out-of-tree, e.g. ...

  | make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- \
  |   O=/tmp/kselftest headers
  | make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- \
  |  O=/tmp/kselftest HOSTCC=gcc FORMAT= \
  |  SKIP_TARGETS="arm64 ia64 powerpc sparc64 x86 sgx" \
  |  -C tools/testing/selftests gen_tar

... the kselftest build would not pick up the correct GENDIR path, and
therefore not including autoconf.h.

Correct that by taking $(O) into consideration when figuring out the
GENDIR path.

Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230705113926.751791-3-bjorn@kernel.org
This commit is contained in:
Björn Töpel 2023-07-05 13:39:26 +02:00 committed by Daniel Borkmann
parent ce1f289f54
commit 21be9e477f
1 changed files with 4 additions and 0 deletions
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4
tools/testing/selftests/bpf/Makefile
View File

@ -12,7 +12,11 @@ BPFDIR := $(LIBDIR)/bpf
TOOLSINCDIR := $(TOOLSDIR)/include
BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
APIDIR := $(TOOLSINCDIR)/uapi
ifneq ($(O),)
GENDIR := $(O)/include/generated
else
GENDIR := $(abspath ../../../../include/generated)
endif
GENHDR := $(GENDIR)/autoconf.h
HOSTPKG_CONFIG := pkg-config