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1.. SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)2 3Building libbpf4===============5 6libelf and zlib are internal dependencies of libbpf and thus are required to link7against and must be installed on the system for applications to work.8pkg-config is used by default to find libelf, and the program called9can be overridden with PKG_CONFIG.10 11If using pkg-config at build time is not desired, it can be disabled by12setting NO_PKG_CONFIG=1 when calling make.13 14To build both static libbpf.a and shared libbpf.so:15 16.. code-block:: bash17 18 $ cd src19 $ make20 21To build only static libbpf.a library in directory build/ and install them22together with libbpf headers in a staging directory root/:23 24.. code-block:: bash25 26 $ cd src27 $ mkdir build root28 $ BUILD_STATIC_ONLY=y OBJDIR=build DESTDIR=root make install29 30To build both static libbpf.a and shared libbpf.so against a custom libelf31dependency installed in /build/root/ and install them together with libbpf32headers in a build directory /build/root/:33 34.. code-block:: bash35 36 $ cd src37 $ PKG_CONFIG_PATH=/build/root/lib64/pkgconfig DESTDIR=/build/root make