From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 12 Sep 2011 11:13:37 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] Undefined 'pc_sysrootdir' in libxenomai_posix.pc
 ?
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To: varname <varname@domain.hid>
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On 09/12/2011 11:08 AM, Gilles Chanteperdrix wrote:
> On 09/12/2011 10:27 AM, varname wrote:
>> Trying to use pkg-config with 2.6.0-rc2 results in the following error 
>> message:
>>
>>    Variable 'pc_sysrootdir' not defined in 
>> '/home/test/usr/xenomai-2.6.0-rc2/lib/pkgconfig/libxenomai_posix.pc'
>>
>> Same behaviour in rc1.
>>
>> Removing ${pc_sysrootdir} seems to work, but I'm not sure that is the 
>> correct fix for this.
> 
> No, the correct use of pkg-config is to pass the PKG_CONFIG_SYSROOT_DIR
> environment variable.
> 
> if the staging variable contains the directory which was used as DESTDIR
> when installing xenomai, you should run pkg-config with the following
> environment variables set:
> 
> PKG_CONFIG_LIBDIR=${staging}/usr/lib/pkgconfig:${staging}/usr/share/pkgconfig
> 
> PKG_CONFIG_SYSROOT_DIR=${staging}
> 

See:
http://www.flameeyes.eu/autotools-mythbuster/pkgconfig/cross-compiling.html

-- 
					    Gilles.