--- compiler2/Makefile.orig	2024-11-14 11:50:43 UTC
+++ compiler2/Makefile
@@ -55,12 +55,16 @@ ifeq ($(XMLDIR), default)
 ifdef XMLDIR
 ifeq ($(XMLDIR), default)
   XMLDIR := /usr
+  CPPFLAGS += -DXMLDIR=\"$(XMLDIR)\"
   # do not add -L/usr/lib to LDFLAGS, it's redundant
 else
   LDFLAGS  += -L$(XMLDIR)/lib
+  CPPFLAGS += -DXMLDIR=\"$(XMLDIR)\"
 endif
 
   CPPFLAGS += -I$(XMLDIR)/include/libxml2
+else
+  CPPFLAGS += -DXMLDIR=\"\$$(TTCN3_DIR)\"
 endif
 
 ifdef SRCDIR