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From:	"Matt D." <codespunk AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Building OpenSSH fails when '--with-kerberos5' in the default configuration
Message-ID:	<59FDBB58.8010501@gmail.com>
Date:	Sat, 4 Nov 2017 09:06:32 -0400
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
MIME-Version:	1.0

I downloaded the source for Cygwin's OpenSSH package and attempted to 
build it with the defaults:

cygport openssh.cygport prep
cygport openssh.cygport compile

This resulted in the following compile errors:

In file included from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/openbsd-compat.h:180:0,
from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/includes.h:174,
from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/port-aix.c:27:
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/bsd-misc.h:124:39: 
error: expected identifier or ‘(’ before ‘do’
# define krb5_free_error_message(a,b) do { } while(0)
^
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/bsd-misc.h:124:46: 
error: expected identifier or ‘(’ before ‘while’
# define krb5_free_error_message(a,b) do { } while(0)
^
In file included from /usr/include/krb5/krb5.h:8488:0,
from /usr/include/krb5.h:8,
from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/auth.h:42,
from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/port-aix.c:33:
/usr/include/et/com_err.h:38:20: error: conflicting types for 
‘error_message’
extern char const *error_message (long);
^~~~~~~~~~~~~
In file included from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/includes.h:171:0,
from 
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/openbsd-compat/port-aix.c:27:
/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/src/openssh-7.6p1/defines.h:684:43: 
note: previous declaration of ‘error_message’ was here
# define krb5_get_err_text(context,code) error_message(code)
^
make[1]: *** [Makefile:26: port-aix.o] Error 1
make[1]: Leaving directory 
'/usr/src/openssh-7.6p1-1.src/openssh-7.6p1-1.i686/build/openbsd-compat'
make: *** [Makefile:156: openbsd-compat/libopenbsd-compat.a] Error 2
*** ERROR: make failed

Modifying openssh.cygport by removing "--with-kerberos5" allows compilation.

I have all of the applicable Kerberos packages:

$cygcheck -c | grep -i krb
libgssapi_krb5_2          1.15.2-1                OK
libkrb5-devel             1.15.2-1                OK
libkrb5_3                 1.15.2-1                OK
libkrb5support0           1.15.2-1                OK

Am I missing something?


Matt D.

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