mirror of
https://github.com/netdata/libbpf.git
synced 2026-03-20 08:19:07 +08:00
a82a66eda3
Introduce multiple improvements to Makefile to make the build more flexible and support install: * Support overriding CFLAGS by user but keep required flags in place. ALL_FLAGS is used in Makefile as recommended in [1]. * Add additional BUILD_SHARED flag to build dynamically linked flavor of the library. If the flag is set, -fPIC is also passed to make it possible to build .so. * Support building in a separate directory provided by OBJDIR variable. * Add multiple install targets. By default the library itself and libbpf headers are installed (install target). UAPI headers can be optionally installed by user. * All installation paths, including PREFIX, library and include directories can be overridden. UAPI can be made different from include directory for libbpf headers. That makes it possible to keep latest <linux/bpf.h> in a place that doesn't conflict with the one installed e.g. by kernel-headers package and use it in user's build system. * Support DESTDIR (see [2]). * Support overriding LDFLAGS. * Use utilities such as rm directly as recommended in [3]. * Use compiler and related programs (such as ar) via make variables as recommended in [3]. * In clean rule remove all possible build artifacts not to rely on passed options (e.g. if build was done w/ BUILD_SHARED, but clean w/o it). * Document new build options in README. [1] https://www.gnu.org/software/make/manual/html_node/Command-Variables.html#Command-Variables [2] https://www.gnu.org/prep/standards/html_node/DESTDIR.html [3] https://www.gnu.org/software/make/manual/html_node/Utilities-in-Makefiles.html#Utilities-in-Makefiles Signed-off-by: Andrey Ignatov <rdna@fb.com>
31 lines
1.1 KiB
Plaintext
31 lines
1.1 KiB
Plaintext
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This is a mirror of bpf-next linux tree
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(https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next)
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bpf-next/tools/lib/bpf directory plus its supporting header files.
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The following files will by sync'ed with bpf-next repo:
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src/ <-> bpf-next/tools/lib/bpf/
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include/uapi/linux/bpf.h <-> bpf-next/tools/include/uapi/linux/bpf.h
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include/uapi/linux/btf.h <-> bpf-next/tools/include/uapi/linux/btf.h
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include/uapi/linux/if_link.h <-> bpf-next/tools/include/uapi/linux/if_link.h
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include/uapi/linux/netlink.h <-> bpf-next/tools/include/uapi/linux/netlink.h
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include/tools/libc_compat.h <-> bpf-next/tools/include/tools/libc_compat.h
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Other header files at this repo (include/linux/*.h) are reduced versions of
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their counterpart files at bpf-next/tools/include/linux/*.h to make compilation
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successful.
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Build
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=====
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To build static library libbpf.a:
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cd src
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make
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To build both static libbpf.a and shared libbpf.so libraries in directory
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build/ and install them together with libbpf headers in a staging directory
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root/:
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cd src
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mkdir build root
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BUILD_SHARED=y OBJDIR=build DESTDIR=root make install
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