> I.e. extra line with single backslash in the beginning and missing > '$(wildcard' make's function after object file name. This isn't caused by GCC, or not directly anyway. Firebird's make.rules has: $(OBJ)/%.o: $(SRC_ROOT)/%.c $(CC) $(WCFLAGS) -c $(firstword $<) -o $@ @sed -i -e "1s/:/: \$$(wildcard/" -e "\$$s/\(.*\)/\\1)/" $(patsubst %.o,%.d,$@) Something in that sed command does not work as expected; you should look at the .d file before it is changed to see what's up (you can give the -i flag an argument which it will use to make a backup of the original file before it edits it; e.g. -i.orig will make a bla.d.orig). Segher