ACLOCAL_AMFLAGS=-I .
endif
+
+CR_EXCEPTIONS=copyright_exceptions
+#: Check for GNU Copyrights.
+check_copyrights:
+ @echo "Compute exceptions >$(CR_EXCEPTIONS)~"
+ @export LANG=C; \
+ find . -name '.git' -prune -o -name '*.el' -print0 | \
+ xargs -0 grep -L 'Free Software Foundation, Inc' | \
+ grep -v '\(\.dir-locals\|.-\(pkg\|autoloads\)\)\.el$$'; \
+ find . -name '.git' -prune -o -name '*.el' -print | \
+ while read f; do \
+ fquoted="$$(echo $$f|tr '|' '_')"; \
+ sed -n -e '/[Cc]opyright.*, *[1-9][-0-9]*,\?$$/N' \
+ -e '/Free Software Foundation/d' \
+ -e "s|^\\(.*[Cc]opyright\\)|$$fquoted:\\1|p" \
+ "$$f"; \
+ done | sort >$(CR_EXCEPTIONS)~
+ diff -u "$(CR_EXCEPTIONS)" "$(CR_EXCEPTIONS)~"