[Pkg-shadow-devel] Problem at cross-compiling shadow-4.1.4.2

[Nicolas François]

Hello,

On Sat, Aug 22, 2009 at 12:34:35PM +0200, pi00100100 at gmail.com wrote:
> 
> I'm trying to cross-compile shadow-4.1.4.2. The host system is
> i686-unknown-linux-gnu. The target system is
> x86_64-unknown-linux-gnu. I'm trying to run the configure script
> with the arguments --prefix=/usr --build=i686-unknown-linux-gnu
> --host=x86_64-unknown-linux-gnu --disable-nls but I get the
> following error message:
> 
> checking whether setpgrp takes no argument... configure: error:
> cannot check setpgrp when cross compiling
> 
> I can fix this by adding ac_cv_func_setpgrp_void=yes to the
> configure arguments, but I wonder if this is the normal and
> recommended way to proceed or if it is a bug.

You can remove AC_FUNC_SETPGRP from configure.in.
(ac_cv_func_setpgrp_void=yes is also safe if you want to avoid
re-autoconfing)

Here is the documentation of this autoconf macro:

 -- Macro: AC_FUNC_SETPGRP
     If `setpgrp' takes no argument (the Posix version), define
     `SETPGRP_VOID'.  Otherwise, it is the BSD version, which takes two
     process IDs as arguments.  This macro does not check whether
     `setpgrp' exists at all; if you need to work in that situation,
     first call `AC_CHECK_FUNC' for `setpgrp'.

     This macro is obsolescent, as current systems have a `setpgrp'
     whose signature conforms to Posix.  New programs need not use this
     macro.

Also, setpgrp is only used in src/logoutd.c, and unconditionally without
any arguments. So if it failed on any system, nobody complained since
quite a long time.

Best Regards,
-- 
Nekral