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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>
This commit is contained in:
Masahiro Yamada
parent
9a8dfb394c
commit
833e622459
@ -184,14 +184,8 @@ endef
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quiet_cmd_flex = LEX $@
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cmd_flex = $(LEX) -o$@ -L $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.lex.c_shipped
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$(src)/%.lex.c_shipped: $(src)/%.l
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$(call cmd,flex)
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endif
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.PRECIOUS: $(obj)/%.lex.c
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$(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE
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$(obj)/%.lex.c: $(src)/%.l FORCE
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$(call if_changed,flex)
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# YACC
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@ -199,27 +193,15 @@ $(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE
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quiet_cmd_bison = YACC $@
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cmd_bison = $(YACC) -o$@ -t -l $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.tab.c_shipped
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$(src)/%.tab.c_shipped: $(src)/%.y
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$(call cmd,bison)
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endif
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.PRECIOUS: $(obj)/%.tab.c
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$(filter %.tab.c,$(targets)): $(obj)/%.tab.c: $(src)/%.y FORCE
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$(obj)/%.tab.c: $(src)/%.y FORCE
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$(call if_changed,bison)
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quiet_cmd_bison_h = YACC $@
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cmd_bison_h = bison -o/dev/null --defines=$@ -t -l $<
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ifdef REGENERATE_PARSERS
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.PRECIOUS: $(src)/%.tab.h_shipped
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$(src)/%.tab.h_shipped: $(src)/%.y
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$(call cmd,bison_h)
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endif
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.PRECIOUS: $(obj)/%.tab.h
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$(filter %.tab.h,$(targets)): $(obj)/%.tab.h: $(src)/%.y FORCE
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$(obj)/%.tab.h: $(src)/%.y FORCE
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$(call if_changed,bison_h)
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# Shipped files
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@ -5,9 +5,36 @@ always := $(hostprogs-y)
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genksyms-objs := genksyms.o parse.tab.o lex.lex.o
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# FIXME: fix the ambiguous grammar in parse.y and delete this hack
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#
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# Suppress shift/reduce, reduce/reduce conflicts warnings
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# unless W=1 is specified.
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#
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# Just in case, run "$(YACC) --version" without suppressing stderr
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# so that 'bison: not found' will be displayed if it is missing.
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ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
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quiet_cmd_bison_no_warn = $(quet_cmd_bison)
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cmd_bison_no_warn = $(YACC) --version >/dev/null; \
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$(cmd_bison) 2>/dev/null
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$(obj)/parse.tab.c: $(src)/parse.y FORCE
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$(call if_changed,bison_no_warn)
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quiet_cmd_bison_h_no_warn = $(quet_cmd_bison_h)
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cmd_bison_h_no_warn = $(YACC) --version >/dev/null; \
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$(cmd_bison_h) 2>/dev/null
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$(obj)/parse.tab.h: $(src)/parse.y FORCE
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$(call if_changed,bison_h_no_warn)
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endif
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# -I needed for generated C source (shipped source)
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HOSTCFLAGS_parse.tab.o := -I$(src)
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HOSTCFLAGS_lex.lex.o := -I$(src)
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# dependencies on generated files need to be listed explicitly
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$(obj)/lex.lex.o: $(obj)/parse.tab.h
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targets := lex.lex.c parse.tab.c parse.tab.h
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -1,119 +0,0 @@
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/* A Bison parser, made by GNU Bison 2.7. */
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/* Bison interface for Yacc-like parsers in C
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Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* As a special exception, you may create a larger work that contains
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part or all of the Bison parser skeleton and distribute that work
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under terms of your choice, so long as that work isn't itself a
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parser generator using the skeleton or a modified version thereof
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as a parser skeleton. Alternatively, if you modify or redistribute
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the parser skeleton itself, you may (at your option) remove this
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special exception, which will cause the skeleton and the resulting
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Bison output files to be licensed under the GNU General Public
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License without this special exception.
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This special exception was added by the Free Software Foundation in
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version 2.2 of Bison. */
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#ifndef YY_YY_SCRIPTS_GENKSYMS_PARSE_TAB_H_SHIPPED_INCLUDED
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# define YY_YY_SCRIPTS_GENKSYMS_PARSE_TAB_H_SHIPPED_INCLUDED
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/* Enabling traces. */
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#ifndef YYDEBUG
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# define YYDEBUG 1
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#endif
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#if YYDEBUG
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extern int yydebug;
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#endif
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/* Tokens. */
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#ifndef YYTOKENTYPE
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# define YYTOKENTYPE
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/* Put the tokens into the symbol table, so that GDB and other debuggers
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know about them. */
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enum yytokentype {
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ASM_KEYW = 258,
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ATTRIBUTE_KEYW = 259,
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AUTO_KEYW = 260,
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BOOL_KEYW = 261,
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CHAR_KEYW = 262,
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CONST_KEYW = 263,
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DOUBLE_KEYW = 264,
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ENUM_KEYW = 265,
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EXTERN_KEYW = 266,
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EXTENSION_KEYW = 267,
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FLOAT_KEYW = 268,
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INLINE_KEYW = 269,
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INT_KEYW = 270,
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LONG_KEYW = 271,
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REGISTER_KEYW = 272,
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RESTRICT_KEYW = 273,
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SHORT_KEYW = 274,
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SIGNED_KEYW = 275,
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STATIC_KEYW = 276,
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STRUCT_KEYW = 277,
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TYPEDEF_KEYW = 278,
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UNION_KEYW = 279,
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UNSIGNED_KEYW = 280,
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VOID_KEYW = 281,
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VOLATILE_KEYW = 282,
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TYPEOF_KEYW = 283,
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VA_LIST_KEYW = 284,
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EXPORT_SYMBOL_KEYW = 285,
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ASM_PHRASE = 286,
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ATTRIBUTE_PHRASE = 287,
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TYPEOF_PHRASE = 288,
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BRACE_PHRASE = 289,
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BRACKET_PHRASE = 290,
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EXPRESSION_PHRASE = 291,
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CHAR = 292,
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DOTS = 293,
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IDENT = 294,
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INT = 295,
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REAL = 296,
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STRING = 297,
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TYPE = 298,
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OTHER = 299,
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FILENAME = 300
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};
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#endif
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#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
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typedef int YYSTYPE;
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# define YYSTYPE_IS_TRIVIAL 1
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# define yystype YYSTYPE /* obsolescent; will be withdrawn */
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# define YYSTYPE_IS_DECLARED 1
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#endif
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extern YYSTYPE yylval;
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#ifdef YYPARSE_PARAM
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#if defined __STDC__ || defined __cplusplus
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int yyparse (void *YYPARSE_PARAM);
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#else
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int yyparse ();
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#endif
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#else /* ! YYPARSE_PARAM */
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#if defined __STDC__ || defined __cplusplus
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int yyparse (void);
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#else
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int yyparse ();
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#endif
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#endif /* ! YYPARSE_PARAM */
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#endif /* !YY_YY_SCRIPTS_GENKSYMS_PARSE_TAB_H_SHIPPED_INCLUDED */
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