+abs_top_srcdir='@abs_top_srcdir@'
+abs_top_builddir='@abs_top_builddir@'
+: ${PERL='@PERL@'}
+
+# Use the shipped files, not those installed.
+BISON_PKGDATADIR=$abs_top_srcdir/data
+export BISON_PKGDATADIR
+
+$PREBISON "$abs_top_builddir/src/bison" ${1+"$@"}
+status=$?
+
+# As a special dark magic, if we are actually using this wrapper to
+# compile Bison's src/parse-gram.y, post-process the synclines to
+# avoid dependencies on the user's set up (srcdir vs. builddir).
+for i
+do
+ case $i in
+ */src/parse-gram.y)
+ if $PERL --version >/dev/null; then
+ # We are called by ylwrap which (if it's an old version) still
+ # uses y.tab.*, and post-processes the synclines on y.tab.c
+ # itself. Don't let it do it. Besides, it leaves
+ # "parse-gram.y" as the source, dropping the src/ part.
+ $PERL -pi -e 's{"y\.tab\.}{"parse-gram.}g;' \
+ -e 's{"(?:.*/)?(parse-gram\.[chy])"}{"src/$1"}g;' \
+ -e 's{GRAM_Y_TAB_H}{GRAM_SRC_PARSE_GRAM_H}g;' \
+ y.tab.[ch]
+ fi
+ ;;
+ esac
+done
+
+exit $status
+
+# Local Variables:
+# mode: shell-script
+# End: