GNU bug report logs - #12836
automake-1.12 make check: FAIL:2

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Tru Huynh <tru <at> pasteur.fr>
To: bug-automake <at> gnu.org
Subject: automake-1.12 make check: FAIL:2
Date: Thu, 8 Nov 2012 15:10:29 +0100

[Message part 1 (text/plain, inline)]

Hello,

automake 1.12 fails 2 tests (autoconf version 2.69 used).
[tru <at> liberte automake-1.11.6]$ rpm -q kernel gcc
kernel-2.6.18-308.16.1.el5.x86_64
gcc-4.1.2-52.el5_8.1.x86_64
[tru <at> liberte automake-1.12]$  gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)
[tru <at> liberte automake-1.12]$ type autoconf
autoconf is /c5/shared/autoconf/2.69/bin/autoconf
[tru <at> liberte automake-1.12]$ autoconf -V
autoconf (GNU Autoconf) 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by David J. MacKenzie and Akim Demaille.
...

tar xzvf ~/sources/automake-1.12.tar.gz 
cd automake-1.12/
./configure --prefix=/c5/shared/automake/1.12
make && make install && make check

============================================================================
Testsuite summary for GNU Automake 1.12
============================================================================
# TOTAL: 2721
# PASS:  2474
# SKIP:  203
# XFAIL: 42
# FAIL:  2
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to bug-automake <at> gnu.org
============================================================================

Best regards,

Tru
-- 
Dr Tru Huynh          | http://www.pasteur.fr/recherche/unites/Binfs/
mailto:tru <at> pasteur.fr | tel/fax +33 1 45 68 87 37/19
Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France  

[test-suite.log (text/plain, attachment)]

[config.status (text/plain, attachment)]

[config.log (text/plain, attachment)]

Message #8 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
To: Tru Huynh <tru <at> pasteur.fr>
Cc: 12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: automake-1.12 make check: FAIL:2
Date: Thu, 08 Nov 2012 20:27:28 +0100

tags 12836 + moreinfo
severity 12836 minor
thanks

On 11/08/2012 03:10 PM, Tru Huynh wrote:
> Hello,
> 
Hi Tru, thanks for the report.

> automake 1.12 fails 2 tests (autoconf version 2.69 used).
> [tru <at> liberte automake-1.11.6]$ rpm -q kernel gcc
> kernel-2.6.18-308.16.1.el5.x86_64
> gcc-4.1.2-52.el5_8.1.x86_64
> [tru <at> liberte automake-1.12]$  gcc -v
> Using built-in specs.
> Target: x86_64-redhat-linux
> Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux
> Thread model: posix
> gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)
> [tru <at> liberte automake-1.12]$ type autoconf
> autoconf is /c5/shared/autoconf/2.69/bin/autoconf
> [tru <at> liberte automake-1.12]$ autoconf -V
> autoconf (GNU Autoconf) 2.69
> Copyright (C) 2012 Free Software Foundation, Inc.
> License GPLv3+/Autoconf: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
> 
> Written by David J. MacKenzie and Akim Demaille.
> ...
> 
> tar xzvf ~/sources/automake-1.12.tar.gz 
> cd automake-1.12/
> ./configure --prefix=/c5/shared/automake/1.12
> make && make install && make check
> 
> ============================================================================
> Testsuite summary for GNU Automake 1.12
> ============================================================================
> # TOTAL: 2721
> # PASS:  2474
> # SKIP:  203
> # XFAIL: 42
> # FAIL:  2
> # XPASS: 0
> # ERROR: 0
> ============================================================================
> See ./test-suite.log
> Please report to bug-automake <at> gnu.org
> ============================================================================
> 
> Best regards,
> 
I've done several fixes to the Automake testsuite since 1.12 was released;
could you please try with the last released version (1.12.4) and see if
these issues persist?

Thanks,
  Stefano

Message #15 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Tru Huynh <tru <at> pasteur.fr>
To: Stefano Lattarini <stefano.lattarini <at> gmail.com>
Cc: 12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: automake-1.12 make check: FAIL:2
Date: Thu, 8 Nov 2012 22:17:38 +0100

[Message part 1 (text/plain, inline)]

On Thu, Nov 08, 2012 at 08:27:28PM +0100, Stefano Lattarini wrote:
> I've done several fixes to the Automake testsuite since 1.12 was released;
> could you please try with the last released version (1.12.4) and see if
> these issues persist?

sure:

tar xzvf ~/sources/automake-1.12.4.tar.gz 
cd automake-1.12.4/
./configure --prefix=/c5/shared/automake/1.12.4
make && make install && make check
....
============================================================================
Testsuite summary for GNU Automake 1.12.4
============================================================================
# TOTAL: 2633
# PASS:  2380
# SKIP:  211
# XFAIL: 40
# FAIL:  2
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to bug-automake <at> gnu.org
============================================================================

In 1.12 the errors were:
FAIL: t/distcheck-override-infodir
FAIL: t/help2

One of the errors changed for 1.12.4:
FAIL: t/help2
FAIL: t/lex-header

I am attaching the full test-suite.log config.status config.log

Cheers,

Tru
-- 
Dr Tru Huynh          | http://www.pasteur.fr/recherche/unites/Binfs/
mailto:tru <at> pasteur.fr | tel/fax +33 1 45 68 87 37/19
Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France  

[config.log (text/plain, attachment)]

[config.status (text/plain, attachment)]

[test-suite.log (text/plain, attachment)]

Message #18 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
To: Tru Huynh <tru <at> pasteur.fr>
Cc: 12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: automake-1.12 make check: FAIL:2
Date: Thu, 15 Nov 2012 17:24:56 +0100

Hi Tru, sorry for the further delay.

On 11/08/2012 10:17 PM, Tru Huynh wrote:
> On Thu, Nov 08, 2012 at 08:27:28PM +0100, Stefano Lattarini wrote:
>> I've done several fixes to the Automake testsuite since 1.12 was released;
>> could you please try with the last released version (1.12.4) and see if
>> these issues persist?
> 
> sure:
> 
> tar xzvf ~/sources/automake-1.12.4.tar.gz 
> cd automake-1.12.4/
> ./configure --prefix=/c5/shared/automake/1.12.4
> make && make install && make check
> ....
> ============================================================================
> Testsuite summary for GNU Automake 1.12.4
> ============================================================================
> # TOTAL: 2633
> # PASS:  2380
> # SKIP:  211
> # XFAIL: 40
> # FAIL:  2
> # XPASS: 0
> # ERROR: 0
> ============================================================================
> See ./test-suite.log
> Please report to bug-automake <at> gnu.org
> ============================================================================
> 

> FAIL: t/lex-header
> ==================
>
> lex-header: running flex --version
> flex version 2.5.4
>
Yikes!  According to what I see in <http://flex.sourceforge.net/>, this
flex version is fifteen years old!  The failure here is due to the fact
that we are assuming a flex feature (support for the "--header-file"
option) that is not present in such an old version.  So we can consider
this a spurious error; and the fact that all the other test cases on lex
support have passed shows that Automake-generated rules can actually
work very well even with such an old flex version.

(and BTW, I'd reeally suggest you to update your flex installation ;-)

> FAIL: t/help2
> ==============
>
> + aclocal-1.12
> + cat stderr
> NONE:0: /usr/bin/m4: ERROR: end of file in string
> autom4te: /usr/bin/m4 failed with exit status: 1
> aclocal-1.12: error: autom4te failed with exit status: 1
> + /bin/grep -F acinclude.m4 stderr
> + am_exit_trap 1
> + exit_status=1
>
This too sounds like a spurious error, in that the error message we
expected from this particular aclocal invocation is there, but it's
not as "precise" as we'd like it to be.  Not a big deal, and not
really aclocal's fault, since the error message comes from GNU m4.
May I ask you which m4 version re you using?  That is unfortunately
not registered in config.log ...

-*-*-

In conclusion: these two failures are just negligible testsuite
weaknesses, that we can safely ignore.  And the automake you have
built should be perfectly safe for production use.

I will close this bug report soonish (I'm still keeping it open
because I'd like to know the m4 version you're using).

Thanks,
  Stefano

Message #21 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Tru Huynh <tru <at> pasteur.fr>
To: Stefano Lattarini <stefano.lattarini <at> gmail.com>
Cc: 12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: automake-1.12 make check: FAIL:2
Date: Thu, 15 Nov 2012 17:33:34 +0100

On Thu, Nov 15, 2012 at 05:24:56PM +0100, Stefano Lattarini wrote:
> Hi Tru, sorry for the further delay.
> 
no problem :)
> 
> > FAIL: t/lex-header
> > ==================
> >
> > lex-header: running flex --version
> > flex version 2.5.4
> >
> Yikes!  According to what I see in <http://flex.sourceforge.net/>, this
> flex version is fifteen years old!  The failure here is due to the fact
> that we are assuming a flex feature (support for the "--header-file"
> option) that is not present in such an old version.  So we can consider
> this a spurious error; and the fact that all the other test cases on lex
> support have passed shows that Automake-generated rules can actually
> work very well even with such an old flex version.
> 
> (and BTW, I'd reeally suggest you to update your flex installation ;-)
That's the default flex version on CentOS-5/Red Hat Enterprise Linux 5.
[tru <at> sillage ~]$ rpm -q flex
flex-2.5.4a-41.fc6.x86_64

I will install another flex version next time :).

> 
> > FAIL: t/help2
> > ==============
> >
> > + aclocal-1.12
> > + cat stderr
> > NONE:0: /usr/bin/m4: ERROR: end of file in string
> > autom4te: /usr/bin/m4 failed with exit status: 1
> > aclocal-1.12: error: autom4te failed with exit status: 1
> > + /bin/grep -F acinclude.m4 stderr
> > + am_exit_trap 1
> > + exit_status=1
> >
> This too sounds like a spurious error, in that the error message we
> expected from this particular aclocal invocation is there, but it's
> not as "precise" as we'd like it to be.  Not a big deal, and not
> really aclocal's fault, since the error message comes from GNU m4.
> May I ask you which m4 version re you using?  That is unfortunately
> not registered in config.log ...
> 
/usr/bin/m4 is the CentOS-5 default version.
[tru <at> sillage ~]$ rpm -qf /usr/bin/m4
m4-1.4.5-3.el5.1.x86_64

Another oldy too :D

Thanks for you help,

Tru
-- 
Dr Tru Huynh          | http://www.pasteur.fr/recherche/unites/Binfs/
mailto:tru <at> pasteur.fr | tel/fax +33 1 45 68 87 37/19
Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France  

Message #24 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
To: Tru Huynh <tru <at> pasteur.fr>
Cc: GNU bug tracker automated control server <control <at> debbugs.gnu.org>,
	12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: automake-1.12 make check: FAIL:2
Date: Thu, 15 Nov 2012 17:36:28 +0100

tags  12836 - moreinfo
tags  12836 + notabug
close 12836

On 11/15/2012 05:33 PM, Tru Huynh wrote:
> On Thu, Nov 15, 2012 at 05:24:56PM +0100, Stefano Lattarini wrote:
>> Hi Tru, sorry for the further delay.
>>
> no problem :)
>>
>>> FAIL: t/lex-header
>>> ==================
>>>
>>> lex-header: running flex --version
>>> flex version 2.5.4
>>>
>> Yikes!  According to what I see in <http://flex.sourceforge.net/>, this
>> flex version is fifteen years old!  The failure here is due to the fact
>> that we are assuming a flex feature (support for the "--header-file"
>> option) that is not present in such an old version.  So we can consider
>> this a spurious error; and the fact that all the other test cases on lex
>> support have passed shows that Automake-generated rules can actually
>> work very well even with such an old flex version.
>>
>> (and BTW, I'd reeally suggest you to update your flex installation ;-)
> That's the default flex version on CentOS-5/Red Hat Enterprise Linux 5.
> [tru <at> sillage ~]$ rpm -q flex
> flex-2.5.4a-41.fc6.x86_64
> 
> I will install another flex version next time :).
> 
>>
>>> FAIL: t/help2
>>> ==============
>>>
>>> + aclocal-1.12
>>> + cat stderr
>>> NONE:0: /usr/bin/m4: ERROR: end of file in string
>>> autom4te: /usr/bin/m4 failed with exit status: 1
>>> aclocal-1.12: error: autom4te failed with exit status: 1
>>> + /bin/grep -F acinclude.m4 stderr
>>> + am_exit_trap 1
>>> + exit_status=1
>>>
>> This too sounds like a spurious error, in that the error message we
>> expected from this particular aclocal invocation is there, but it's
>> not as "precise" as we'd like it to be.  Not a big deal, and not
>> really aclocal's fault, since the error message comes from GNU m4.
>> May I ask you which m4 version re you using?  That is unfortunately
>> not registered in config.log ...
>>
> /usr/bin/m4 is the CentOS-5 default version.
> [tru <at> sillage ~]$ rpm -qf /usr/bin/m4
> m4-1.4.5-3.el5.1.x86_64
> 
> Another oldy too :D
>
Yep :-)

> Thanks for you help,
> 
Thanks for the details.  I can now proceed to close this bug report.

Best regards,
  Stefano

Message #33 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
To: Dagobert Michelsen <dam <at> opencsw.org>
Cc: 11524 <at> debbugs.gnu.org,
	"automake-patches <at> gnu.org" <automake-patches <at> gnu.org>,
	12836 <at> debbugs.gnu.org
Subject: Re: bug#11524: ping on automake bug#11524
Date: Thu, 22 Nov 2012 10:39:44 +0100

[+cc bug#12836, automake-patches]

On 11/21/2012 10:17 PM, Dagobert Michelsen wrote:
> Hi Stefano,
>
Hi Dagobert, thanks for the quick reply.

> Am 21.11.2012 um 11:11 schrieb Stefano Lattarini <stefano.lattarini <at> gmail.com>:
>> Reference:
>> <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11524>
>>
>> Any news on this bug?  Can it still be reproduced with Automake 1.12.5?
>> Can it be reproduced with the development version of Automake from the
>> 'master' branch?  Since the evidence so far seems to point to spurious
>> errors, I will close this report in a few days if I haven't heard back
>> by then.
> 
> 
> I still get quite some failures:
>   http://buildfarm.opencsw.org/~dam/automake-1.12.5-test-suite.log
>
Let's try to go through them one by one (in different replies).

> FAIL: t/lex-header
> lex-header: running flex --version
> flex version 2.5.4
>
OK, this version of flex is ~ 15 years old, and ...

> /bin/bash ./ylwrap `test -f 'lexer.l' || echo './'`lexer.l \
>    lex.yy.c foo-lexer.c -- flex --header-file=mylex.h
> flex: unknown flag '-'.  For usage, try
>	flex --help
> *** Error code 1
> make: Fatal error: Command failed for target `foo-lexer.c'
>
... doesn't support the '--header-file' option.  This issue has been
reported once already (in automake bug#12836, which I am CC:ing).
The patch should take care of the issue.  Can you confirm it works?

---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ----

From 656f866264c7afe0f821eb0962aad8ff2f65c531 Mon Sep 17 00:00:00 2001
Message-Id: <656f866264c7afe0f821eb0962aad8ff2f65c531.1353576830.git.stefano.lattarini <at> gmail.com>
From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
Date: Thu, 22 Nov 2012 10:29:37 +0100
Subject: [PATCH] tests: fix a spurious failure with older flex versions

See automake bug#11524 and bug#12836.

* t/lex-header.sh: Here, we use flex option '--header-file',
but that option is not supported by some older flex versions.
Simply skip this test if such an old flex version is detected.

Signed-off-by: Stefano Lattarini <stefano.lattarini <at> gmail.com>
---
 t/lex-header.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/t/lex-header.sh b/t/lex-header.sh
index f8d7333..ad2976e 100755
--- a/t/lex-header.sh
+++ b/t/lex-header.sh
@@ -20,6 +20,12 @@
 required='cc flex'
 . ./defs || exit 1

+# Here, we need to use the use flex option '--header-file', but some
+# older flex versions don't support is (see automake bug#11524 and
+# bug#12836).  Skip this test if such an old flex version is detected.
+$LEX --help | grep '.*--header-file' \
+  || skip_ "flex doesn't support the --header-file' option"
+
 cat >> configure.ac << 'END'
 AC_PROG_CC
 AC_PROG_LEX
-- 
1.8.0.209.gf3828dc

Message #36 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
To: Dagobert Michelsen <dam <at> opencsw.org>
Cc: 11524 <at> debbugs.gnu.org,
	"automake-patches <at> gnu.org" <automake-patches <at> gnu.org>,
	12836 <at> debbugs.gnu.org
Subject: Re: bug#12836: bug#11524: ping on automake bug#11524
Date: Sat, 24 Nov 2012 13:06:00 +0100

On 11/22/2012 10:39 AM, Stefano Lattarini wrote:
>
> 
>> FAIL: t/lex-header
>> lex-header: running flex --version
>> flex version 2.5.4
>>
> OK, this version of flex is ~ 15 years old, and ...
> 
>> /bin/bash ./ylwrap `test -f 'lexer.l' || echo './'`lexer.l \
>>    lex.yy.c foo-lexer.c -- flex --header-file=mylex.h
>> flex: unknown flag '-'.  For usage, try
>> 	flex --help
>> *** Error code 1
>> make: Fatal error: Command failed for target `foo-lexer.c'
>>
> ... doesn't support the '--header-file' option.  This issue has been
> reported once already (in automake bug#12836, which I am CC:ing).
> The patch should take care of the issue.
> 
>  -*-*-*-
>
> Subject: [PATCH] tests: fix a spurious failure with older flex versions
> 
> See automake bug#11524 and bug#12836.
> 
> * t/lex-header.sh: Here, we use flex option '--header-file',
> but that option is not supported by some older flex versions.
> Simply skip this test if such an old flex version is detected.
> 
I've now pushed this patch (to maint).

Regards,
  Stefano

Message #39 received at 12836 <at> debbugs.gnu.org (full text, mbox):

From: Dagobert Michelsen <dam <at> opencsw.org>
To: Stefano Lattarini <stefano.lattarini <at> gmail.com>
Cc: 11524 <at> debbugs.gnu.org,
	"automake-patches <at> gnu.org" <automake-patches <at> gnu.org>,
	12836 <at> debbugs.gnu.org
Subject: Re: bug#11524: ping on automake bug#11524
Date: Mon, 26 Nov 2012 09:21:21 +0100

Hi Stefano,

Am 22.11.2012 um 10:39 schrieb Stefano Lattarini <stefano.lattarini <at> gmail.com>:

> [+cc bug#12836, automake-patches]
> 
> On 11/21/2012 10:17 PM, Dagobert Michelsen wrote:
>> Hi Stefano,
>> 
> Hi Dagobert, thanks for the quick reply.
> 
>> Am 21.11.2012 um 11:11 schrieb Stefano Lattarini <stefano.lattarini <at> gmail.com>:
>>> Reference:
>>> <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11524>
>>> 
>>> Any news on this bug?  Can it still be reproduced with Automake 1.12.5?
>>> Can it be reproduced with the development version of Automake from the
>>> 'master' branch?  Since the evidence so far seems to point to spurious
>>> errors, I will close this report in a few days if I haven't heard back
>>> by then.
>> 
>> 
>> I still get quite some failures:
>>  http://buildfarm.opencsw.org/~dam/automake-1.12.5-test-suite.log
>> 
> Let's try to go through them one by one (in different replies).
> 
>> FAIL: t/lex-header
>> lex-header: running flex --version
>> flex version 2.5.4
>> 
> OK, this version of flex is ~ 15 years old, and ...
> 
>> /bin/bash ./ylwrap `test -f 'lexer.l' || echo './'`lexer.l \
>>   lex.yy.c foo-lexer.c -- flex --header-file=mylex.h
>> flex: unknown flag '-'.  For usage, try
>> 	flex --help
>> *** Error code 1
>> make: Fatal error: Command failed for target `foo-lexer.c'
>> 
> ... doesn't support the '--header-file' option.  This issue has been
> reported once already (in automake bug#12836, which I am CC:ing).
> The patch should take care of the issue.  Can you confirm it works?

Looks good, no more "unknown flag" in test-suite.log


Best regards

  -- Dago

> ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ---- 8< ----
> 
> From 656f866264c7afe0f821eb0962aad8ff2f65c531 Mon Sep 17 00:00:00 2001
> Message-Id: <656f866264c7afe0f821eb0962aad8ff2f65c531.1353576830.git.stefano.lattarini <at> gmail.com>
> From: Stefano Lattarini <stefano.lattarini <at> gmail.com>
> Date: Thu, 22 Nov 2012 10:29:37 +0100
> Subject: [PATCH] tests: fix a spurious failure with older flex versions
> 
> See automake bug#11524 and bug#12836.
> 
> * t/lex-header.sh: Here, we use flex option '--header-file',
> but that option is not supported by some older flex versions.
> Simply skip this test if such an old flex version is detected.
> 
> Signed-off-by: Stefano Lattarini <stefano.lattarini <at> gmail.com>
> ---
> t/lex-header.sh | 6 ++++++
> 1 file changed, 6 insertions(+)
> 
> diff --git a/t/lex-header.sh b/t/lex-header.sh
> index f8d7333..ad2976e 100755
> --- a/t/lex-header.sh
> +++ b/t/lex-header.sh
> @@ -20,6 +20,12 @@
> required='cc flex'
> . ./defs || exit 1
> 
> +# Here, we need to use the use flex option '--header-file', but some
> +# older flex versions don't support is (see automake bug#11524 and
> +# bug#12836).  Skip this test if such an old flex version is detected.
> +$LEX --help | grep '.*--header-file' \
> +  || skip_ "flex doesn't support the --header-file' option"
> +
> cat >> configure.ac << 'END'
> AC_PROG_CC
> AC_PROG_LEX
> -- 
> 1.8.0.209.gf3828dc

-- 
"You don't become great by trying to be great, you become great by wanting to do something,
and then doing it so hard that you become great in the process." - xkcd #896

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