Implement a handwritten recursive-descent RTLIL parser with minimal copying

Author: rocallahan

frontends/rtlil/Makefile.inc

@@ -1,19 +1 @@
-
-GENFILES += frontends/rtlil/rtlil_parser.tab.cc
-GENFILES += frontends/rtlil/rtlil_parser.tab.hh
-GENFILES += frontends/rtlil/rtlil_parser.output
-GENFILES += frontends/rtlil/rtlil_lexer.cc
-
-frontends/rtlil/rtlil_parser.tab.cc: frontends/rtlil/rtlil_parser.y
-	$(Q) mkdir -p $(dir $@)
-	$(P) $(BISON) -o $@ -d -r all -b frontends/rtlil/rtlil_parser $<
-
-frontends/rtlil/rtlil_parser.tab.hh: frontends/rtlil/rtlil_parser.tab.cc
-
-frontends/rtlil/rtlil_lexer.cc: frontends/rtlil/rtlil_lexer.l
-	$(Q) mkdir -p $(dir $@)
-	$(P) flex -o frontends/rtlil/rtlil_lexer.cc $<
-
-OBJS += frontends/rtlil/rtlil_parser.tab.o frontends/rtlil/rtlil_lexer.o
 OBJS += frontends/rtlil/rtlil_frontend.o
-