Assuming this is similar to the test failures documented for LFS [1],
five of the test failures should be resolved after Automake is installed.
Those testcases have been updated [2] to check for the existence of
aclocal before executing, so expected failure should be listed instead
of a failure.

The only test failure that should need attention is:
    143. C++ exception handling (exceptions.at:24): FAILED 
(exceptions.at:385)

This is fixed in Libtool's master branch [3]. If you apply these changes to
the test/exceptions.at, the test should pass.

Closing. If this does not fix your issue, I will reopen.

[1] 
https://www.linuxfromscratch.org/lfs/view/development/chapter08/libtool.html
[2] 
https://git.savannah.gnu.org/cgit/libtool.git/commit/?id=3ab1239727fb29ad4a680fa375036a9c265cac72
[3] 
https://git.savannah.gnu.org/cgit/libtool.git/commit/?id=17fb010919e9f7e28fe28e13f2710bb85b00cb3a

-- 
Ileana Dumitrescu

GPG Public Key: FA26 CA78 4BE1 8892 7F22 B99F 6570 EA01 146F 7354