flex-help

[Flex-help] Flex gives no output after upgrade to macOS High Sierra

[David S. <dsa...@ne...>]

Hi,

After I upgraded to macOS High Sierra and Xcode 9, running flex gives me no
output.

Same symptoms as in these (unanswered) questions:
https://stackoverflow.com/questions/47765188/flex-gives-no-output-on-macos-high-sierra-xcode-9
https://superuser.com/questions/1276478/flex-gives-no-output-on-macos-high-sierra-xcode-9

Any ideas?

Thanks,
David

Re: [Flex-help] Flex gives no output after upgrade to macOS High Sierra

[Will E. <wes...@gm...>]

What version of flex?

And your version of flex gives no output when you do what?

On Thursday, 11 January 2018,  7:21 pm +0000, David Saltzman <dsa...@ne...> wrote:

> Hi,
> 
> After I upgraded to macOS High Sierra and Xcode 9, running flex gives me no
> output.
> 
> Same symptoms as in these (unanswered) questions:
> https://stackoverflow.com/questions/47765188/flex-gives-no-output-on-macos-high-sierra-xcode-9
> https://superuser.com/questions/1276478/flex-gives-no-output-on-macos-high-sierra-xcode-9
> 
> Any ideas?
> 
> Thanks,
> David
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> -- 
> Flex-help mailing list
> Fle...@li...
> https://lists.sourceforge.net/lists/listinfo/flex-help

-- 
Will Estes
Flex Project Maintainer
wes...@gm...
https://github.com/westes/flex

Re: [Flex-help] Flex gives no output after upgrade to macOS High Sierra

[David S. <dsa...@ne...>]

Thanks Will,

Version: flex 2.5.35 Apple(flex-31)

It gives no output whenever I run any file through it or anything that
should succeed, eg:

~$ echo %% | flex -t

~$


Though if I run a file with an error through, it will spit out the error.

On Thu, Jan 11, 2018 at 11:24 AM Will Estes <wes...@gm...> wrote:

> What version of flex?
>
> And your version of flex gives no output when you do what?
>
> On Thursday, 11 January 2018,  7:21 pm +0000, David Saltzman <
> dsa...@ne...> wrote:
>
> > Hi,
> >
> > After I upgraded to macOS High Sierra and Xcode 9, running flex gives me
> no
> > output.
> >
> > Same symptoms as in these (unanswered) questions:
> >
> https://stackoverflow.com/questions/47765188/flex-gives-no-output-on-macos-high-sierra-xcode-9
> >
> https://superuser.com/questions/1276478/flex-gives-no-output-on-macos-high-sierra-xcode-9
> >
> > Any ideas?
> >
> > Thanks,
> > David
> >
> ------------------------------------------------------------------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > --
> > Flex-help mailing list
> > Fle...@li...
> > https://lists.sourceforge.net/lists/listinfo/flex-help
>
> --
> Will Estes
> Flex Project Maintainer
> wes...@gm...
> https://github.com/westes/flex
>

Re: [Flex-help] Flex gives no output after upgrade to macOS High Sierra

[Will E. <wes...@gm...>]

That's a really old version of flex. Can you upgrade to the current release -- 2.6.4?

Does flex --version work?

What does strace (or whatever the equivalent is on OSX is called) say is happening?

On Thursday, 11 January 2018,  7:48 pm +0000, David Saltzman <dsa...@ne...> wrote:

> Thanks Will,
> 
> Version: flex 2.5.35 Apple(flex-31)
> 
> It gives no output whenever I run any file through it or anything that
> should succeed, eg:
> 
> ~$ echo %% | flex -t
> 
> ~$
> 
> 
> Though if I run a file with an error through, it will spit out the error.
> 
> On Thu, Jan 11, 2018 at 11:24 AM Will Estes <wes...@gm...> wrote:
> 
> > What version of flex?
> >
> > And your version of flex gives no output when you do what?
> >
> > On Thursday, 11 January 2018,  7:21 pm +0000, David Saltzman <
> > dsa...@ne...> wrote:
> >
> > > Hi,
> > >
> > > After I upgraded to macOS High Sierra and Xcode 9, running flex gives me
> > no
> > > output.
> > >
> > > Same symptoms as in these (unanswered) questions:
> > >
> > https://stackoverflow.com/questions/47765188/flex-gives-no-output-on-macos-high-sierra-xcode-9
> > >
> > https://superuser.com/questions/1276478/flex-gives-no-output-on-macos-high-sierra-xcode-9
> > >
> > > Any ideas?
> > >
> > > Thanks,
> > > David
> > >
> > ------------------------------------------------------------------------------
> > > Check out the vibrant tech community on one of the world's most
> > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > > --
> > > Flex-help mailing list
> > > Fle...@li...
> > > https://lists.sourceforge.net/lists/listinfo/flex-help
> >
> > --
> > Will Estes
> > Flex Project Maintainer
> > wes...@gm...
> > https://github.com/westes/flex
> >
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> -- 
> Flex-help mailing list
> Fle...@li...
> https://lists.sourceforge.net/lists/listinfo/flex-help

-- 
Will Estes
Flex Project Maintainer
wes...@gm...
https://github.com/westes/flex

Re: [Flex-help] Flex gives no output after upgrade to macOS High Sierra

[David S. <dsa...@ne...>]

Sorry for the delay in response; it had failed on both the pre-installed
mac version (2.5.35 Apple(flex-31)) and 2.6.4.

Tracing ended up being non-trivial because of macOS's System Integrity
Protection.

The issue ended up being that something that had been installed through
MacPorts didn't work after the upgrade to High Sierra, (presumably
something the flex was using); I'm not sure which thing it was, but
cleaning out (and updating as needed) the MacPorts installs fixed it.

Thanks for helping out!
David

On Thu, Jan 11, 2018 at 11:54 AM Will Estes <wes...@gm...> wrote:

> That's a really old version of flex. Can you upgrade to the current
> release -- 2.6.4?
>
> Does flex --version work?
>
> What does strace (or whatever the equivalent is on OSX is called) say is
> happening?
>
> On Thursday, 11 January 2018,  7:48 pm +0000, David Saltzman <
> dsa...@ne...> wrote:
>
> > Thanks Will,
> >
> > Version: flex 2.5.35 Apple(flex-31)
> >
> > It gives no output whenever I run any file through it or anything that
> > should succeed, eg:
> >
> > ~$ echo %% | flex -t
> >
> > ~$
> >
> >
> > Though if I run a file with an error through, it will spit out the error.
> >
> > On Thu, Jan 11, 2018 at 11:24 AM Will Estes <wes...@gm...> wrote:
> >
> > > What version of flex?
> > >
> > > And your version of flex gives no output when you do what?
> > >
> > > On Thursday, 11 January 2018,  7:21 pm +0000, David Saltzman <
> > > dsa...@ne...> wrote:
> > >
> > > > Hi,
> > > >
> > > > After I upgraded to macOS High Sierra and Xcode 9, running flex
> gives me
> > > no
> > > > output.
> > > >
> > > > Same symptoms as in these (unanswered) questions:
> > > >
> > >
> https://stackoverflow.com/questions/47765188/flex-gives-no-output-on-macos-high-sierra-xcode-9
> > > >
> > >
> https://superuser.com/questions/1276478/flex-gives-no-output-on-macos-high-sierra-xcode-9
> > > >
> > > > Any ideas?
> > > >
> > > > Thanks,
> > > > David
> > > >
> > >
> ------------------------------------------------------------------------------
> > > > Check out the vibrant tech community on one of the world's most
> > > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > > > --
> > > > Flex-help mailing list
> > > > Fle...@li...
> > > > https://lists.sourceforge.net/lists/listinfo/flex-help
> > >
> > > --
> > > Will Estes
> > > Flex Project Maintainer
> > > wes...@gm...
> > > https://github.com/westes/flex
> > >
> >
> ------------------------------------------------------------------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > --
> > Flex-help mailing list
> > Fle...@li...
> > https://lists.sourceforge.net/lists/listinfo/flex-help
>
> --
> Will Estes
> Flex Project Maintainer
> wes...@gm...
> https://github.com/westes/flex
>