From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Glibc/hurd work till now
Date: Sat, 22 Mar 2014 15:16:06 +0100
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	(Manolis Ragkousis's message of "Fri, 21 Mar 2014 23:23:32 +0000")
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To: Manolis Ragkousis <manolis837@gmail.com>
Cc: Guix-devel@gnu.org

Manolis Ragkousis <manolis837@gmail.com> skribis:

> I started writing the macro that chooses between 'glibc/linux' and
> 'glibc/hurd' so I added #:export (glibc) at defined modules, renamed glibc
> to glibc/linux and then I added
>
> (define (glibc-for-target target)
>   "Return the glibc for TARGET, glibc/linux for a linux host or
> glibc/hurd for a hurd host"
>   (match target
>     ("i686-pc-gnu" glibc/hurd)
>     (_ glibc/linux)))
>
> (define-syntax glibc
>   (identifier-syntax (glibc-for-target (%current-target-system))))

Looks good!  It should be:

  (glibc-for-target (or (%current-target-system) (%current-system)))

so that, when we build natively on GNU/Hurd, we also end up using
glibc/hurd.

> Is my approach right? Because I am getting the error
>
> gnu/packages/base.scm:772:3: In procedure #<procedure 48307c0 ()>:
> gnu/packages/base.scm:772:3: In procedure struct-ref: Wrong type argument
> in position 1 (expecting struct): #<syntax-transformer glibc>

Run =E2=80=98make clean-go && make=E2=80=99 to recompile the Scheme file, a=
nd everything
will be alright, hopefully.  :-)

(This is because macros are expanded at compile time, so any Scheme file
that refers to =E2=80=98glibc=E2=80=99 must be recompiled so that the macro=
 gets
expanded.)

Ludo=E2=80=99.