throw out obsolete stuff from Makefile

src/snc/Makefile

@@ -4,52 +4,29 @@ include $(TOP)/configure/CONFIG
 #----------------------------------------
 #  ADD MACRO DEFINITIONS AFTER THIS LINE
 
-USE_LEMON = 1
-
 #  Internal debug control
 #USR_CPPFLAGS = -DDEBUG
 
-#  YACC options (generate y.tab.h; generate y.output)
-YACCOPT	= -d -v
-LEXOPT += -s -d
-
 #  snc product
 PROD_HOST = snc
-ifdef USE_LEMON
 PROD_HOST += lemon
-endif
 
 snc_LIBS += $(EPICS_BASE_IOC_LIBS)
-ifdef USE_LEMON
+
 USR_CFLAGS += -DUSE_LEMON
 snc_SRCS += snl.c
 snc_SRCS += snl_lex.re
-else
-snc_SRCS += snc.c
-endif
 snc_SRCS += snc_main.c parse.c phase2.c
 snc_SRCS += gen_ss_code.c gen_tables.c sncVersion.c
 
-#  Lex library
-snc_SYS_LIBS_WIN32    += -nil-
-snc_SYS_LIBS_cygwin32 += -nil-
-snc_SYS_LIBS_Linux    += fl
-snc_SYS_LIBS_DEFAULT  += l
-
-ifdef USE_LEMON
 lemon_SRCS = lemon.c
 
 LEMON = $(INSTALL_BIN)/lemon
-endif
 
 include $(TOP)/configure/RULES
 #----------------------------------------
 #  ADD RULES AFTER THIS LINE
 
-#  The generated lex file includes snc.h
-#snc_lex.c: snc.h ../snc_lex.l
-snc$(OBJ): snc_lex.c
-
 #  How to generate the version file
 sncVersion.c: $(TOP)/configure/CONFIG
 	$(RM) $@
@@ -58,7 +35,6 @@ sncVersion.c: $(TOP)/configure/CONFIG
 clean::
 	@$(RM) snc.c snc_lex.c
 
-ifdef USE_LEMON
 snl.c snl.h: snl.lem snl.lt $(LEMON)
 	$(LEMON) snl.lem
 
@@ -68,11 +44,7 @@ snl.c snl.h: snl.lem snl.lt $(LEMON)
 %.lt: ../%.lt
 	$(CP) $< .
 
-vpath %.re . ..
+vpath %.re ..
 
 snl_lex.c: snl.re snl.h
-	re2c -d -o $@ $<
-
-else
-snc.c: snc_lex.c
-endif
+	re2c -o $@ $<