From 833e622459432ed5bc7cc58ffadb91b59c863a3a Mon Sep 17 00:00:00 2001
From: Masahiro Yamada
Date: Fri, 23 Mar 2018 22:04:32 +0900
Subject: genksyms: generate lexer and parser during build instead of shipping

Now that the kernel build supports flex and bison, remove the _shipped
files and generate them during the build instead.

There are no more shipped lexer and parser, so I ripped off the rules
in scripts/Malefile.lib that were used for REGENERATE_PARSERS.

The genksyms parser has ambiguous grammar, which would emit warnings:

 scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr]
 scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr]

They are normally suppressed, but displayed when W=1 is given.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
 scripts/Makefile.lib | 24 +++---------------------
 1 file changed, 3 insertions(+), 21 deletions(-)

(limited to 'scripts/Makefile.lib')

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 45b9aa3ca39e..b1d938fab73b 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -184,14 +184,8 @@ endef
 quiet_cmd_flex = LEX     $@
       cmd_flex = $(LEX) -o$@ -L $<
 
-ifdef REGENERATE_PARSERS
-.PRECIOUS: $(src)/%.lex.c_shipped
-$(src)/%.lex.c_shipped: $(src)/%.l
-	$(call cmd,flex)
-endif
-
 .PRECIOUS: $(obj)/%.lex.c
-$(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE
+$(obj)/%.lex.c: $(src)/%.l FORCE
 	$(call if_changed,flex)
 
 # YACC
@@ -199,27 +193,15 @@ $(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE
 quiet_cmd_bison = YACC    $@
       cmd_bison = $(YACC) -o$@ -t -l $<
 
-ifdef REGENERATE_PARSERS
-.PRECIOUS: $(src)/%.tab.c_shipped
-$(src)/%.tab.c_shipped: $(src)/%.y
-	$(call cmd,bison)
-endif
-
 .PRECIOUS: $(obj)/%.tab.c
-$(filter %.tab.c,$(targets)): $(obj)/%.tab.c: $(src)/%.y FORCE
+$(obj)/%.tab.c: $(src)/%.y FORCE
 	$(call if_changed,bison)
 
 quiet_cmd_bison_h = YACC    $@
       cmd_bison_h = bison -o/dev/null --defines=$@ -t -l $<
 
-ifdef REGENERATE_PARSERS
-.PRECIOUS: $(src)/%.tab.h_shipped
-$(src)/%.tab.h_shipped: $(src)/%.y
-	$(call cmd,bison_h)
-endif
-
 .PRECIOUS: $(obj)/%.tab.h
-$(filter %.tab.h,$(targets)): $(obj)/%.tab.h: $(src)/%.y FORCE
+$(obj)/%.tab.h: $(src)/%.y FORCE
 	$(call if_changed,bison_h)
 
 # Shipped files
-- 
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