The change to the "am__pep3147_tweak" variable included in <http://git.savannah.gnu.org/cgit/automake.git/commit/?id=006c4dfede96091f5bed622c17946cbec067347f> causes the generated Makefile files not to work on systems (such as macOS) where "sed" interprets "\n" in the substitution text as the letter "n" instead of as a newline.
For example, if I run "make distcheck" in the package created with the attached files, I see that in the uninstall phase it attempts to remove rm -f foo.*.pycnfoo.*.pyo which results in the following error: ERROR: files left after uninstall: ./lib/python3.6/site-packages/automake_python_test/__pycache__/foo.cpython-36.opt-1.pyc ./lib/python3.6/site-packages/automake_python_test/__pycache__/foo.cpython-36.pyc A log file containing the output of running configure and make distcheck is attached. Versions of OS and software: macOS High Sierra 10.13.4 autoconf (GNU Autoconf) 2.69 automake (GNU automake) 1.16.1 Thanks, -Mark
pep3147-bug.log
Description: pep3147-bug.log
configure.ac
Description: configure.ac
Makefile.am
Description: Makefile.am
import sys
