Certain subtests in selftests core_reloc and core_reloc_btfgen requires llvm ENUM64 support in llvm15. If an older compiler is used, these subtests will fail. Make this requirement clear in selftests README.rst file. Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx> Signed-off-by: Yonghong Song <yhs@xxxxxx> --- tools/testing/selftests/bpf/README.rst | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst index eb1b7541f39d..a83d78a58014 100644 --- a/tools/testing/selftests/bpf/README.rst +++ b/tools/testing/selftests/bpf/README.rst @@ -266,3 +266,21 @@ from running test_progs will look like: test_xdpwall:FAIL:Does LLVM have https://reviews.llvm.org/D109073? unexpected error: -4007 __ https://reviews.llvm.org/D109073 + +ENUM64 support and Clang version +================================ + +There are a few selftests requiring LLVM ENUM64 support. The LLVM ENUM64 is +introduced in `Clang 15` [0_]. Without proper compiler support, the following selftests +will fail: + +.. code-block:: console + + #45 /73 core_reloc/enum64val:FAIL + #45 /74 core_reloc/enum64val___diff:FAIL + #45 /75 core_reloc/enum64val___val3_missing:FAIL + #46 /73 core_reloc_btfgen/enum64val:FAIL + #46 /74 core_reloc_btfgen/enum64val___diff:FAIL + #46 /75 core_reloc_btfgen/enum64val___val3_missing:FAIL + +.. _0: https://reviews.llvm.org/D124641 -- 2.30.2
