Jean-Philippe Brucker e4ac80ef81 tools/runqslower: Fix cross-build ... Commit be79505caf ("tools/runqslower: Install libbpf headers when building") uses the target libbpf to build the host bpftool, which doesn't work when cross-building: make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -C tools/bpf/runqslower O=/tmp/runqslower ... LINK /tmp/runqslower/bpftool/bpftool /usr/bin/ld: /tmp/runqslower/libbpf/libbpf.a(libbpf-in.o): Relocations in generic ELF (EM: 183) /usr/bin/ld: /tmp/runqslower/libbpf/libbpf.a: error adding symbols: file in wrong format collect2: error: ld returned 1 exit status When cross-building, the target architecture differs from the host. The bpftool used for building runqslower is executed on the host, and thus must use a different libbpf than that used for runqslower itself. Remove the LIBBPF_OUTPUT and LIBBPF_DESTDIR parameters, so the bpftool build makes its own library if necessary. In the selftests, pass the host bpftool, already a prerequisite for the runqslower recipe, as BPFTOOL_OUTPUT. The runqslower Makefile will use the bpftool that's already built for selftests instead of making a new one. Fixes: be79505caf ("tools/runqslower: Install libbpf headers when building") Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20211112155128.565680-1-jean-philippe@linaro.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2021-11-12 17:23:16 -08:00
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bpftool	bpftool: Install libbpf headers for the bootstrap version, too	2021-11-05 16:19:48 +01:00
resolve_btfids	tools/resolve_btfids: Switch to new btf__type_cnt API	2021-10-22 16:09:14 -07:00
runqslower	tools/runqslower: Fix cross-build	2021-11-12 17:23:16 -08:00
.gitignore	…
Makefile	…
bpf_asm.c	…
bpf_dbg.c	…
bpf_exp.l	…
bpf_exp.y	…
bpf_jit_disasm.c	…