Using TCLIBC = "uclibc" in oe-core

[Tom Parkin <tom.parkin@pace.com>]

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Hi list,

I'm trying to set up a working openembedded-core/uClibc mipsel
environment.  I found that setting TCLIBC = "uclibc" in local.conf
yielded the following:

ERROR: Nothing PROVIDES 'glib-2.0-native'

I traced this down to code in meta/recipes-core/glib-2.0/glib-2.0.inc,
which raises a SkipPackage exception if USE_NLS = "no".

The reason that USE_NLS = "no" in this case is that
meta/conf/distro/include/tclibc-uclibc.inc sets USE_NLS ?= "no".

Looking further at tclibc-uclibc.inc, though, it appears that there is
some code attempting to work around this issue:

USE_NLS_glib-2.0 = "yes"

Sadly, this appears to get ignored.  Following this up on the #yocto
IRC channel, it seems that a more appropriate formulation of the above
would be:

USE_NLS_pn-glib-2.0-native = "yes"

The attached patch allows me to (at least) assemble the bitbake task
list when TCLIBC = "uclibc".  I'm not sure whether this is the correct
approach, though.

Any comments?

Many thanks,
Tom
-- 
Tom Parkin
Senior Software Engineer
Pace Plc

Bringing Technology Home

Victoria Road, Saltaire, West Yorkshire, BD18 3LF, United Kingdom. www.pace.com

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From 7cab67af78f73408d7d86f7cfce78715cd32ae6b Mon Sep 17 00:00:00 2001
From: Tom Parkin <tom.parkin@pace.com>
Date: Tue, 21 Jun 2011 14:33:22 +0100
Subject: [PATCH] Override USE_NLS for glib-2.0-native when using uClibc

We don't use NLS for uClibc, but glib-2.0-native refuses to build
if USE_NLS is not "yes" (ref. meta/recipes-core/glib-2.0/glib-2.0.inc).

As a cunning work around, override USE_NLS for glib-2.0-native.  This
allows initial bitbake tasklist parsing and assembly to complete
successfully.
---
 meta/conf/distro/include/tclibc-uclibc.inc |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/meta/conf/distro/include/tclibc-uclibc.inc b/meta/conf/distro/include/tclibc-uclibc.inc
index c421f5e..408966b 100644
--- a/meta/conf/distro/include/tclibc-uclibc.inc
+++ b/meta/conf/distro/include/tclibc-uclibc.inc
@@ -14,7 +14,7 @@ PREFERRED_PROVIDER_virtual/libiconv ?= "libiconv"
 PREFERRED_PROVIDER_virtual/libintl ?= "gettext"
 
 USE_NLS ?= "no"
-USE_NLS_glib-2.0 = "yes"
+USE_NLS_pn-glib-2.0-native = "yes"
 
 CXXFLAGS += "-fvisibility-inlines-hidden"
 
-- 
1.7.4.4