On Mon, Mar 7, 2022 at 5:30 AM KP Singh <kpsingh@xxxxxxxxxx> wrote: > > Dynamic linking when compiling on the host can cause issues when the > libc version does not match the one in the VM image. Update the > docs to explain how to do this. > > Before: > ./vmtest.sh -- ./test_progs -t test_ima > ./test_progs: /usr/lib/libc.so.6: version `GLIBC_2.33' not found (required by ./test_progs) > > After: > > LDLIBS=-static ./vmtest.sh -- ./test_progs -t test_ima > test_ima:OK > Summary: 1/0 PASSED, 0 SKIPPED, 0 FAILED > > Reported-by: "Geyslan G. Bem" <geyslan@xxxxxxxxx> > Signed-off-by: KP Singh <kpsingh@xxxxxxxxxx> > --- > tools/testing/selftests/bpf/README.rst | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst > index d099d91adc3b..f7fa74448492 100644 > --- a/tools/testing/selftests/bpf/README.rst > +++ b/tools/testing/selftests/bpf/README.rst > @@ -32,6 +32,14 @@ For more information on about using the script, run: > > $ tools/testing/selftests/bpf/vmtest.sh -h > > +Incase of linker errors when running selftests, try using static linking: fixed typo here and pushed to bpf-next. It would still be good to fix the use of LDFLAGS, of course ;) > + > +.. code-block:: console > + > + $ LDLIBS=-static vmtest.sh > + > +.. note:: Some distros may not support static linking. > + > .. note:: The script uses pahole and clang based on host environment setting. > If you want to change pahole and llvm, you can change `PATH` environment > variable in the beginning of script. > -- > 2.35.1.616.g0bdcbb4464-goog >
