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Thu, 30 Jan 2025 16:48:27 -0800 (PST) Message-ID: Subject: Re: [PATCH] selftests: bpf: Support dynamic linking LLVM if static not available From: Eduard Zingerman To: Daniel Xu , shuah@kernel.org, andrii@kernel.org, ast@kernel.org, nathan@kernel.org, daniel@iogearbox.net Cc: martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, mykolal@fb.com, ndesaulniers@google.com, morbo@google.com, justinstitt@google.com, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev Date: Thu, 30 Jan 2025 16:48:22 -0800 In-Reply-To: <872b64e93de9a6cd6a7a10e6a5c5e7893704f743.1738276344.git.dxu@dxuuu.xyz> References: <872b64e93de9a6cd6a7a10e6a5c5e7893704f743.1738276344.git.dxu@dxuuu.xyz> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.3 (3.54.3-1.fc41) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2025-01-30 at 15:33 -0700, Daniel Xu wrote: > Since 67ab80a01886 ("selftests/bpf: Prefer static linking for LLVM > libraries"), only statically linking test_progs is supported. However, > some distros only provide a dynamically linkable LLVM. >=20 > This commit adds a fallback for dynamically linking LLVM if static > linking is not available. If both options are available, static linking > is chosen. >=20 > Signed-off-by: Daniel Xu > --- Tested in two configuration: - when both static and dynamic libraries are available (linked against static); - when only static libraries are available. Tested-by: Eduard Zingerman [...]