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Subject:	Re: fail to compile last perl source under cygwin 2.9.0
To:	cygwin AT cygwin DOT com
References:	<6782632E-5520-4744-81F1-C0F1B028B724 AT Denis-Excoffier DOT org>
From:	Yaakov Selkowitz <yselkowitz AT cygwin DOT com>
Message-ID:	<cd9f08d7-1987-bc13-8b82-50ea2682a917@cygwin.com>
Date:	Wed, 13 Sep 2017 23:07:55 -0500
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From: Yaakov Selkowitz <yselkowitz AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Message-ID: <cd9f08d7-1987-bc13-8b82-50ea2682a917 AT cygwin DOT com>
Subject: Re: fail to compile last perl source under cygwin 2.9.0
References: <6782632E-5520-4744-81F1-C0F1B028B724 AT Denis-Excoffier DOT org>
In-Reply-To: <6782632E-5520-4744-81F1-C0F1B028B724 AT Denis-Excoffier DOT org>


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On 2017-09-13 16:44, Denis Excoffier wrote:
> I tried to build perl-5.26.0 with GCC 7.2.0 (build from source with cygwi=
n's GCC 5.4.0)

Please keep in mind that only the GCC packages shipped in the
distribution (currently, 6.4.0) are supported here.  That being said, I
don't think the version of GCC would particularly matter here.

> and failed with the following error:
>=20
> pp.c: In function 'Perl_pp_crypt':
> pp.c:3743:43: error: invalid application of 'sizeof' to incomplete type '=
struct crypt_data'
>     (struct crypt_data *)safemalloc(sizeof(struct crypt_data));
>                                            ^~~~~~
>=20
> Currently i cannot figure out whether this is crypt's or perl's fault. An=
y help appreciated.

crypt_r and struct crypt_data are GNU extensions and therefore, just
like with glibc, requires _GNU_SOURCE in order to compile.  perl must be
defining _GNU_SOURCE with glibc in order for this to compile there;
perhaps it just needs to know that we require it as well.

> When i was under cygwin 2.8.2, everything was ok.

crypt is separate from the cygwin package.  crypt was completely
reimplemented a few weeks ago to include new features.

--=20
Yaakov


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