--- a/tool/Makefile.am	Wed Feb 04 17:06:14 2009 +0000
+++ b/tool/Makefile.am	Wed Feb 04 17:37:06 2009 +0000
@@ -83,12 +83,12 @@
 	SdoCommand.h \
 	sii_crc.h
 
-REV = `if test -s $(srcdir)/../svnrevision; then \
-		cat $(srcdir)/../svnrevision; \
+REV = `if test -s $(top_srcdir)/svnrevision; then \
+		cat $(top_srcdir)/svnrevision; \
 	else \
 		svnversion $(srcdir)/.. 2>/dev/null || echo "unknown"; \
 	fi`
 
-ethercat_CXXFLAGS = -I../master -Wall -DSVNREV=$(REV)
+ethercat_CXXFLAGS = -I$(top_srcdir)/master -Wall -DSVNREV=$(REV)
 
 #------------------------------------------------------------------------------