On Wed, 1 Oct 2008, Umut Emin wrote:
> I have written a parser in bison which works with flex
> together. The compilation and execution work just fine
> on machines with bison. I tried to port these in
> a Sun OS where only yacc is installed
> yacc -t -d -b parser parser.y
> mv parser.tab.h parser.h
> mv parser.tab.c parser.c
> cc -pedantic -g -o tokenizer.o -c tokenizer.c
> cc -pedantic -g -o parser.o -c parser.c
> "parser.y", line 66: identifier redeclared: YYSTYPE
> current : union {int err_code, pointer to struct def_table {..}
> def_tab, pointer to struct dec_table {..} dec_tab}
> previous: union {int err_code, pointer to struct def_table {..}
> def_tab, pointer to struct dec_table {..} dec_tab} : "parser.h", line 10
> "parser.y", line 159: identifier redeclared: yylval
> current : union {int err_code, pointer to struct def_table {..}
> def_tab, pointer to struct dec_table {..} dec_tab}
> previous: union {int err_code, pointer to struct def_table {..}
> def_tab, pointer to struct dec_table {..} dec_tab} : "parser.h", line 11
> cc: acomp failed for parser.c
> *** Error code 2
> make: Fatal error: Command failed for target `parser_compiling'
In parser.y, try removing:
#include "parser.h"
parser.c should already contain the contents of parser.h.
> Now I suspect, errors are caused by one of those small differences
> between yacc and bison. Yet I can't point out the cause.
When Bison generates parser.h, it generates a cpp guard to protect against
redefinitions of YYSTYPE. Solaris Yacc apparently does not.
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