Hi!
If Automake is used in non-recursive mode and one of the inputs is a
yacc file, for example, src/grammar.y, ylwrap will remove too many
directories from the output file when it adjusts the paths in it.
This results in #line directives referring to grammar.y instead of
src/grammar.y.
This is a result of input_rx simply taking all the directory
components of the absolute input path and removing them.
One solution is to store the path passed to ylwrap and replace input_rx with it:
--- build/ylwrap.old 2012-05-10 13:59:19.495291713 +0200
+++ build/ylwrap 2012-05-10 13:59:24.579351693 +0200
@@ -67,6 +67,8 @@
# The input.
input="$1"
shift
+input_orgdir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
+input_sub=`echo "$input_orgdir" | sed 's,\\\\,\\\\\\\\,g'`
case "$input" in
[\\/]* | ?:[\\/]*)
# Absolute path; do nothing.
@@ -175,7 +177,7 @@
-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
-e 's/[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]/_/g'`
- sed -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
+ sed -e "/^#/!b" -e "s,$input_rx,$input_sub," -e "s,$from,$2," \
-e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
# Check whether header files must be updated.
I’m sure that there’s a much better way of doing this, but this seems to work.
