Hi,

An automated test of the current libtool HEAD [1] exhibits
test failures on macOS 11, but not on macOS 12, 13, 14.

testsuite: 143 169 failed

The relevant test, AFAIU, is:

143: C++ exception handling                          FAILED (exceptions.at:385)

Find attached the tests/testsuite.dir/143/testsuite.log. Note the
"dlopen failed: file not found" error message near the end.

Bruno


[1] https://github.com/gnu-libtool/ci-check/actions