In this article, we are going to uncover a few possible reasons that might prevent yacc stdout from opening and then provide some potential fix methods that you can try to resolve this issue.

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    I’m using the best version of Fedora on VMware Workstation. I am purchasing the Lex A and Yacc program. Compiling the program works fine, but when I run it, the program resolves via gcc y.tab.c lex.yy.c -ll fatal error: y.tab .h : No file or directory.

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  • The same program may work well with Hat Red, but not with Fedora running on VMware.

    %#include#include”y.tab.h”FILE *fp,*yyin;%%%”*”|”/”|”+”|”-“|”(“|”)” return yytext[0];[0-9]+ yylval.name=(char*)malloc(yyleng+1); strcpy(yylval.name,yytext); reverse number;n return(0);[a-zA-Z][a-zA-Z]* yylval.name=(char*)malloc(yyleng+1); strcpy(yylval.name,yytext); return ID;.%%intywrap()return 1;

    %#include#include%%Union symbols *Name;%tokenID number%typeE%left'+''-'%Left'*''/'%nonassoc UMINUS%%S:Eprintf("n%s",$1);;E:E'*'E strcpy($$,strcat(strcat($1,$3),"*"));|E'/'E strcpy($$,strcat(strcat($1,$3),"/"));|E'+'E strcpy($$,strcat(strcat($1,$3),"+"));|E'-'E strcpy($$,strcat(strcat($1,$3),"-"));|ID|No|'-'E%prec UMINUS strcpy($$,strcat($2,"UMINUS"));|'('E')'strcpy($$,$2);;%%primarily ()parse();int yyerror(char *s) fprintf(stderr,"%sn",s);
    Output

    This was originally created on April 21, 2003 11:05:00 PM.
    This issue has been reported: aegis.
    aegis said on April 21, 2003 23:05:00

    I was thinking of putting them on a separate drive, but this
    can then be separated for as long as needed. Highly recommend both
    Production of specific Bison and Flex products and transformation of Lex the
    currently with yacc use less flexible
    Standard UNIX tools.

    I’m just reporting this bug so I can track down the problem. It’s not
    sometimes has a high priority for me.

    crunchy:~/open/scons
    $ python runtest.py test/LEXFLAGS.py
    /usr/freeware/bin/python
    /mnt/rigby/home13/users/aegisk/open/scons/test/LEXFLAGS.py
    /mnt/rigby/home13/users/aegisk/open/scons/src/script/scons.py
    returned 2
    STDOUT ============
    scons: Reading SConscript files…
    scons: Reading SConscript files is complete.
    scons: building goals…
    lex -b -so you bar.l > bar.c
    scons: how to set goals.

    STDERR =============
    lex: ERROR: invalid option — b
    Usage: lex [-ctvnV] [-Q(j/n)] [files…]
    scons: *** [bar.c]Error 1

    Restore (last internal):
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/test/LEXFLAGS.py”,
    Line 118, right?
    test.run(arguments = ‘bar’ + _exe)
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/etc/TestSCons.py”,
    Line 141, on the run
    Accelerated test failed
    TestSCons.TestFailed

    crunchy:~/open/scons
    $ python runtest.py test/YACC.py
    /usr/freeware/bin/python
    /mnt/rigby/home13/users/aegisk/open/scons/test/YACC.py
    /mnt/rigby/home13/users/aegisk/open/scons/src/script/scons.py
    returned 2
    STDOUT ============
    scons: Reading SConscript files…
    scons: Reading SConscript files completed.
    scons: Building targets…
    yacc -d -o foo.c foo.y
    scons: work on creating goals.

    STDERR =============
    UX:yacc: ERROR: invalid facility — o
    UX:yacc: FIX: Usage: yacc [-vVdlt] [-Q(j/n)] [-P [-p
    driver file] driver file] [file prefix -b] file
    scons: *** [foo.c]Error 1

    yacc cannot open stdout

    Restore (last internal):
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/test/YACC.py”,
    Line 142, in ?
    test.run(arguments match ‘foo’ + _exe, = stderr None)
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/etc/TestSCons.py”,
    Line 141, running
    Accelerated test failed
    TestSCons.TestFailed

    crunchy:~/open/scons
    $ python runtest.py test/TAR.py
    /usr/freeware/bin/python
    /mnt/rigby/home13/users/aegisk/open/scons/test/TAR.py
    /mnt/rigby/home13/users/aegisk/open/scons/src/script/scons.py
    returned 2
    STDOUT ============
    scons: Reading SConscript files…
    scons: Reading SConscript files is complete.
    scons: building goals…
    tar -c -f foo.tar file10 file12
    scons: file11 finished creating targets.

    STDERR =============
    tar: repository file /dev/tape may not exist
    normalInvalid or corrupt block file size
    scons: *** [foo.tar] Error 1

    Restore (last internal):
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/test/TAR.py”,
    Line 124, in ?
    test.run(args equal to ‘foo.tar’, stderr = None)
    File
    “/mnt/rigby/home13/users/aegisk/open/scons/etc/TestSCons.py”,
    Line 141, take a walk
    Accelerated test failed
    TestSCons.TestFailed

    htgoebel said on 07/08/2003 05:03:37

    This is a related issue, which is why I included it in this bug report:

    Support for using byacc (Berkley yacc) does not work

    YACCCOM is actually defined as:
    YACCCOM=”$YACC $YACCFLAGS -o $TARGET $SOURCES”

    but byacc doesn’t accept the “-o” option, it always outputs “y.tab.c”
    (and -h if specified, y.tab.h). These filenames do not have
    Refers to some file name entry (but see the -2 option below).

    According to ‘man yacc’, the following files can be created:
    y.tab.c always
    y.tab.h in -d
    optiony.code.c If -r
    y.Output if option -v # is readable by a specific person

    The ‘-b’ option is usually used to slightly change ‘y’
    different. I recommend this feature if possible because it
    Allow crash builds.

    GNU make has There is a rule:
    %.c: %.y

     $(YACC.$< y)    mv -f [email protected]