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genksyms: generate lexer and parser during build instead of shipping

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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>
This commit is contained in:
Masahiro Yamada
2018-03-23 22:04:32 +09:00
parent 9a8dfb394c
commit 833e622459
5 changed files with 30 additions and 4825 deletions
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24
scripts/Makefile.lib
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@@ -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