[Buildroot] [PATCH] package/libglib2: explicitly specify gio module path

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello,

On Thu, 27 Dec 2018 11:33:51 +0100, Thomas Petazzoni wrote:
> Since the switch to pkgconf 1.5.3 in commit
> 4e423669399ad8389edd81761ea5c9cc26bf312d, the glib-networking package
> has been failing to build with:
> 
> glib-networking: installs files in /home/naourr/work/instance-0/output/host/i686-buildroot-linux-uclibc/sysroot//home/naourr/work/instance-0/output
> 
> This error is due to glib-networking having installed its GIO GnuTLS
> module into an invalid location. This invalid location is
> $(DESTDIR)$(GIO_MODULE_DIR). GIO_MODULE_DIR is found by using:
> 
>   pkg-config --variable giomoduledir gio-2.0
> 
> Unfortunately, despite the pkgconf fix in commit
> 7125fc5c1a8a96ff8eee057789358702e1b55835 ("package/pkgconf: add patch
> to restore pre-1.5.3 behavior for sysroot prefixing"), the value
> returned by pkg-config for giomoduledir remains prefixed by the
> sysroot.
> 
> This is due to the fact that giomoduledir is defined by default with
> the value ${libdir}/gio/modules. When running pkg-config --variable
> giomoduledir gio-2.0 with the new pkg-config version, what happens is
> that libdir is resolved first, and libdir is one of the variable for
> which we add the sysroot prefix. Then later, giomoduledir is
> resolved. For this variable, we don't prefix with the
> sysroot. However, when resolving the value of giomoduledir, it re-uses
> the value of libdir that was already resolved, and this value includes
> the sysroot prefix.
> 
> There is no simple way to solve this problem within pkg-config. So for
> the time being, we take a simple route: make sure giomoduledir isn't
> defined in terms of ${libdir}. This is easily done by passing
> --with-gio-module-dir to libglib2 configure script.
> 
> Fixes:
> 
>   http://autobuild.buildroot.net/results/4167159c4a03f5a72dbd7e286aedb3845164cc22/
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
> ---
>  package/libglib2/libglib2.mk | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com