[PATCH 6/8] python: uninstall cater to PEP-3147

[Stefano Lattarini]

After recent commit commit v1.12.4-43-ge0e99ed, "python: improve
support for modern python (CPython 3.2 and PyPy)", the python install
rules have been made smart enough to install "*.pyc" byte-compiled
files according to PEP-3147 with modern (post-3.2) pythons.  However,
the uninstall rules hadn't been updated accordingly, causing leftover
files to remain around after "make uninstall", as well as failures in
"make distcheck".

* lib/am/python.am (am__pep3147_tweak): New internal macro, used
in ...
(uninstall-%DIR%PYTHON): ... the recipe of this target, which has
been adjusted to cater to PEP-3147

Signed-off-by: Stefano Lattarini <address@hidden>
---
 lib/am/python.am | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/lib/am/python.am b/lib/am/python.am
index cab6129..2f12af4 100644
--- a/lib/am/python.am
+++ b/lib/am/python.am
@@ -94,19 +94,37 @@ endif %?INSTALL%
 ## -------------- ##
 
 if %?INSTALL%
+
+?FIRST?am__pep3147_tweak = \
+?FIRST?  sed -e 's|\.py$$||' -e 's|[^/]*$$|__pycache__/&.*.py|'
+
 .PHONY uninstall-am: uninstall-%DIR%PYTHON
 uninstall-%DIR%PYTHON:
        @$(NORMAL_UNINSTALL)
        @list='$(%DIR%_PYTHON)'; test -n "$(%NDIR%dir)" || list=; \
-?BASE? files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-?!BASE?        $(am__nobase_strip_setup); files=`$(am__nobase_strip)`; \
-       test -n "$$files" || exit 0; \
+?BASE? py_files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+?!BASE?        $(am__nobase_strip_setup); py_files=`$(am__nobase_strip)`; \
+       test -n "$$py_files" || exit 0; \
        dir='$(DESTDIR)$(%NDIR%dir)'; \
 ## Also remove the .pyc and .pyo byte compiled versions.
-       filesc=`echo "$$files" | sed 's|$$|c|'`; \
-       fileso=`echo "$$files" | sed 's|$$|o|'`; \
+## This is somewhat tricky, because for newer pythons we have to take
+## PEP-3147 into account.
+       pyc_files=`echo "$$py_files" | sed 's|$$|c|'`; \
+       pyo_files=`echo "$$py_files" | sed 's|$$|o|'`; \
+       py_files_pep3147=`echo "$$py_files" | $(am__pep3147_tweak)`; \
+       echo "$$py_files_pep3147";\
+       pyc_files_pep3147=`echo "$$py_files_pep3147" | sed 's|$$|c|'`; \
+       pyo_files_pep3147=`echo "$$py_files_pep3147" | sed 's|$$|o|'`; \
        st=0; \
-       for files in "$$files" "$$filesc" "$$fileso"; do \
+       for files in \
+         "$$py_files" \
+         "$$pyc_files" \
+         "$$pyo_files" \
+## Installation of '.py' files is not influenced by PEP-3147, so it
+## is correct *not* to have $pyfiles_pep3147 here.
+         "$$pyc_files_pep3147" \
+         "$$pyo_files_pep3147" \
+       ; do \
          $(am__uninstall_files_from_dir) || st=$$?; \
        done; \
        exit $$st
-- 
1.8.0.209.gf3828dc