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libbpf: Improve usability of libbpf Makefile

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Current libbpf Makefile does not contain the help command, which
is inconvenient to use. Similar to the Makefile help command of the
perf, a help command is provided to list the commands supported by
libbpf make and the functions of the commands.

Signed-off-by: Xin Liu <liuxin350@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20221202081738.128513-1-liuxin350@huawei.com
This commit is contained in:
Xin Liu 2022-12-02 16:17:38 +08:00 committed by Andrii Nakryiko
parent f16a7aa5c2
commit 7068194959
1 changed files with 17 additions and 0 deletions
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17
tools/lib/bpf/Makefile
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@ -286,3 +286,20 @@ tags:
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR:
help:
@echo 'libbpf common targets:'
@echo ' HINT: use "V=1" to enable verbose build'
@echo ' all - build libraries and pkgconfig'
@echo ' clean - remove all generated files'
@echo ' check - check abi and version info'
@echo ''
@echo 'libbpf install targets:'
@echo ' HINT: use "prefix"(defaults to "/usr/local") or "DESTDIR" (defaults to "/")'
@echo ' to adjust target desitantion, e.g. "make prefix=/usr/local install"'
@echo ' install - build and install all headers, libraries and pkgconfig'
@echo ' install_headers - install only headers to include/bpf'
@echo ''
@echo 'libbpf make targets:'
@echo ' tags - use ctags to make tag information for source code browsing'
@echo ' cscope - use cscope to make interactive source code browsing database'