[debhelper-devel] Bug#204975: [Build-common-hackers] Bug#204975: cdbs: postrm and postinst have useless call to ldconfig

[Olly Betts]

On Mon, Oct 11, 2004 at 02:25:30PM -0400, Joey Hess wrote:
> I do not like this approach, because it makes the package build
> dependant on the contents of ld.so.conf. Since various packages modify
> that file, there's no canonical list of what directories are used, and
> changing behavior based on the contents of the file is asking for
> trouble. The other alternative, noted in #205142, of hard-coding the
> list of directories from policy into debhelper, is better, but still not
> appealing.

Another approach is to find out from ldconfig which directories it is
searching - you can tell it to use a different file instead of
/etc/ld.so.conf (e.g. /dev/null in this example) if you don't want to
change behaviour based on the contents of that file (and files it
includes):

$ /sbin/ldconfig -N -X -v -f /dev/null 2>/dev/null|sed 's,^\(/.*\):\( (.*)\)\?$,\1,p;d'
/lib/x86_64-linux-gnu
/usr/lib/x86_64-linux-gnu
/lib
/usr/lib

Cheers,
    Olly