[DTC] Compilation issue on Red-hat host systems

[DTC] Compilation issue on Red-hat host systems

[jagan]

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Hi,

I am building dtc as follows
        $ git clone git://jdl.com/software/dtc.git
        $ cd dtc
        $ make
I got the below error while doing make
convert-dtsv0-lexer.lex.c:684: warning: no previous prototype for 'yylex'
make: *** [convert-dtsv0-lexer.lex.o] Error 1

Can anyone help me, I am I missing any PATH setup

Regards,
Jagan.

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Re: [DTC] Compilation issue on Red-hat host systems

[David Gibson]

On Mon, Jul 16, 2012 at 03:29:49PM +0530, jagan wrote:
> Hi,
> 
> I am building dtc as follows
>         $ git clone git://jdl.com/software/dtc.git
>         $ cd dtc
>         $ make
> I got the below error while doing make
> convert-dtsv0-lexer.lex.c:684: warning: no previous prototype for 'yylex'
> make: *** [convert-dtsv0-lexer.lex.o] Error 1
> 
> Can anyone help me, I am I missing any PATH setup

It's almost certainly an issue with the particular version of flex
generating code which triggers warnings we have enabled.  What does
"flex --version" say.  As a workaround you can remove
-Wstrict-prototypes from 'WARNINGS' in the Makefile.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

Re: [DTC] Compilation issue on Red-hat host systems

[jagan]

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My flex version on system is flex version 2.5.4
I tried by  -Wstrict-prototypes  form Makefile, But still I got the same
error.

Do I need to upgrade my flex.

Regards,
Jagan.

On Thu, Jul 19, 2012 at 8:56 AM, David Gibson
<david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>wrote:

> On Mon, Jul 16, 2012 at 03:29:49PM +0530, jagan wrote:
> > Hi,
> >
> > I am building dtc as follows
> >         $ git clone git://jdl.com/software/dtc.git
> >         $ cd dtc
> >         $ make
> > I got the below error while doing make
> > convert-dtsv0-lexer.lex.c:684: warning: no previous prototype for 'yylex'
> > make: *** [convert-dtsv0-lexer.lex.o] Error 1
> >
> > Can anyone help me, I am I missing any PATH setup
>
> It's almost certainly an issue with the particular version of flex
> generating code which triggers warnings we have enabled.  What does
> "flex --version" say.  As a workaround you can remove
> -Wstrict-prototypes from 'WARNINGS' in the Makefile.
>
> --
> David Gibson                    | I'll have my music baroque, and my code
> david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_
> _other_
>                                 | _way_ _around_!
> http://www.ozlabs.org/~dgibson
>

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Re: [DTC] Compilation issue on Red-hat host systems

[David Gibson]

On Sat, Jul 28, 2012 at 03:03:50PM +0530, jagan wrote:
> My flex version on system is flex version 2.5.4
> I tried by  -Wstrict-prototypes  form Makefile, But still I got the same
> error.

Ah, sorry, I think that warning comes from -Wmissing-prototypes, not
-Wstrict-prototypes  try removing that one instead.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

Re: [DTC] Compilation issue on Red-hat host systems

[Jon Loeliger]

> 
> My flex version on system is flex version 2.5.4
> I tried by  -Wstrict-prototypes  form Makefile, But still I got the same
> error.
> 
> Do I need to upgrade my flex.
> 
> Regards,
> Jagan.

My flex is:

    $ flex --version
    flex 2.5.35

    $ gcc --version
    gcc (Debian 4.4.5-8) 4.4.5

and it works fine.

So, yes, upgrade your flex.

jdl