Quentin Monnet e41ac2020b bpftool: Install libbpf headers for the bootstrap version, too ... We recently changed bpftool's Makefile to make it install libbpf's headers locally instead of pulling them from the source directory of the library. Although bpftool needs two versions of libbpf, a "regular" one and a "bootstrap" version, we would only install headers for the regular libbpf build. Given that this build always occurs before the bootstrap build when building bpftool, this is enough to ensure that the bootstrap bpftool will have access to the headers exported through the regular libbpf build. However, this did not account for the case when we only want the bootstrap version of bpftool, through the "bootstrap" target. For example, perf needs the bootstrap version only, to generate BPF skeletons. In that case, when are the headers installed? For some time, the issue has been masked, because we had a step (the installation of headers internal to libbpf) which would depend on the regular build of libbpf and hence trigger the export of the headers, just for the sake of creating a directory. But this changed with commit 8b6c46241c ("bpftool: Remove Makefile dep. on $(LIBBPF) for $(LIBBPF_INTERNAL_HDRS)"), where we cleaned up that stage and removed the dependency on the regular libbpf build. As a result, when we only want the bootstrap bpftool version, the regular libbpf is no longer built. The bootstrap libbpf version is built, but headers are not exported, and the bootstrap bpftool build fails because of the missing headers. To fix this, we also install the library headers for the bootstrap version of libbpf, to use them for the bootstrap bpftool and for generating the skeletons. Fixes: f012ade10b ("bpftool: Install libbpf headers instead of including the dir") Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Quentin Monnet <quentin@isovalent.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: https://lore.kernel.org/bpf/20211105015813.6171-1-quentin@isovalent.com		2021-11-05 16:19:48 +01:00
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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: Install libbpf headers when building	2021-10-08 11:54:15 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
bpf_asm.c	docs: networking: convert filter.txt to ReST	2020-04-28 14:39:46 -07:00
bpf_dbg.c	bpf: Simplify the calculation of variables	2021-03-04 19:24:53 -08:00
bpf_exp.l	bpf: fix cbpf parser bug for octal numbers	2018-06-03 07:46:55 -07:00
bpf_exp.y	tools, bpf_asm: Exit non-zero on errors	2021-02-26 22:53:50 +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 error in 'make -C tools/ bpf_install'	2021-07-07 14:06:38 -07:00