Having a bit of bother getting RG 14.12 to find libs when compiling
UbuntuStudio 14.10.

The problem, of course is that Ubuntu sticks its libs pretty deep in
the file system under /usr/lib/x86_64-linux-gnu/

When it can't see libQtGui.so I can easily solve the problem by
changing my configure command to:

$./configure --with-qtlibdir=/usr/lib/x86_64-linux-gnu/

The problem that's holding me up is that when it can't find the jack
libs, it isn't quite as chatty, so I don't really know what it isn't
finding:

configure: WARNING: Required JACK library not found, building with no audio!

The configure script doesn't have a --with-jacklibdir option so I
guess I'll have to set some sort of a jack related environmental
variable like JACK_CFLAGS  or JACK_LIBS but I'm not really sure how to
set them.

The output from pkg-config all seems pretty reasonable. There are in
fact libs where pkg-config says they ought to be:

steve@laprat:~/Downloads/rosegarden-14.12$ pkg-config --print-variables jack
exec_prefix
prefix
libdir
includedir
server_libs
steve@laprat:~/Downloads/rosegarden-14.12$ pkg-config
--variable=exec_prefix jack
/usr
steve@laprat:~/Downloads/rosegarden-14.12$ pkg-config --variable=libdir jack
/usr/lib/x86_64-linux-gnu
steve@laprat:~/Downloads/rosegarden-14.12$ pkg-config --variable=includedir jack
/usr/include
steve@laprat:~/Downloads/rosegarden-14.12$ pkg-config
--variable=serverlibs jack

I notice that some of the jack libs are put under a subfolder of
libdir, so maybe whatever it is that RG can't find is hiding in there:

steve@laprat:~/Downloads/rosegarden-14.12$ ls /usr/lib/x86_64-linux-gnu/*jack*
/usr/lib/x86_64-linux-gnu/libjacknet.so
/usr/lib/x86_64-linux-gnu/libjacknet.so.0
/usr/lib/x86_64-linux-gnu/libjacknet.so.0.1.0
/usr/lib/x86_64-linux-gnu/libjackserver.so
/usr/lib/x86_64-linux-gnu/libjackserver.so.0
/usr/lib/x86_64-linux-gnu/libjackserver.so.0.1.0
/usr/lib/x86_64-linux-gnu/libjack.so
/usr/lib/x86_64-linux-gnu/libjack.so.0
/usr/lib/x86_64-linux-gnu/libjack.so.0.1.0

/usr/lib/x86_64-linux-gnu/jack:
audioadapter.so      jack_alsa.so      jack_loopback.so  netadapter.so
inprocess.so         jack_dummy.so     jack_netone.so    netmanager.so
jack_alsarawmidi.so  jack_firewire.so  jack_net.so       profiler.so



Any suggestions?

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