Fix "make tags": set locale to C to call sort

vstinner · vstinner · commit cf0ac6a71ae5 · 2016-08-17T13:58:12.000+02:00
vim expects that the tags file is sorted using english collation, so it fails if the locale is french for example. Use LC_ALL=C to force english sorting order. Issue #27726.
diff --git a/Makefile.pre.in b/Makefile.pre.in
@@ -1566,7 +1566,7 @@ tags::
 	ctags -w Include/*.h; \
 	for i in $(SRCDIRS); do ctags -w -a $$i/*.[ch]; \
 	done; \
-	sort -o tags tags
+	LC_ALL=C sort -o tags tags
 
 # Create a tags file for GNU Emacs
 TAGS::
