Re: [fluid-dev] Proposal: FluidSynth tester program

[David Henningsson]

On 07/30/2012 07:41 PM, S. Christian Collins wrote:
> On 07/28/2012 11:59 PM, David Henningsson wrote:
> > 4) Run
> > sudo make install
> > ...to install the new version. Once you have finished testing, run
> > sudo make uninstall
> > ...to revert to the version that comes with Ubuntu.
> On my system (Kubuntu 64-bit), this resulted in version 1.1.6 of the
> FluidSynth binary using the 1.1.5 libraries.

Thanks for noticing!
I've tried to sort this stuff out, all this linking can be a bit hairy :-/

There seem to be two problems here:

1) We install things into /usr/local/lib64 by default, which is wrong 
under Debian systems (see 
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=612000 )

Workaround:

Run cmake with
"cmake -DLIB_SUFFIX= .."
Note the space between "=" and "..", and that 
-DCMAKE_INSTALL_PREFIX=/usr is *not* specified.

This causes the library to be installed into /usr/local/lib.

2) The ld.so.cache is not updated

Workaround:

Run "sudo ldconfig" after "sudo make install" or "sudo make uninstall" 
to update the cache.

After that, things seem to be in order:
* "which fluidsynth" returns /usr/local/bin
* "ldd /usr/local/bin/fluidsynth" returns "libfluidsynth.so.1 => 
/usr/local/lib/libfluidsynth.so.1"

As for fixing these issues long-term:

1) I'm not aware of the standards of when to use lib or lib64 for 
non-Debian systems, but if it's important to install into lib64 in e g 
Fedora, maybe we could detect whether our target is Debian based, and if 
so, skip the LIB_SUFFIX?

2) I think cmake's make file should call ldconfig after 
install/uninstall, so this seems to be a bug in cmake? I think "libtool 
finish" does that.

> I also had a problem with OSS support causing
> make to abort, so I edited the *CMakeLists.txt* file in the source
> directory by changing line 328 from:
>
> set ( OSS_SUPPORT ${OSS_FOUND} )
>
> ...to:
>
> set ( OSS_SUPPORT 0 )
>
> ...and then I was able to compile.

Hmm, it seems like we're missing an enable-oss (to go with enable-alsa, 
enable-jack etc) to make it easy to leave out.

> After testing, you will need to manually remove the library files you
> copied to */usr/lib/x86_64-linux-gnu* and "sudo make uninstall" from the
> FluidSynth build directory should remove the rest.  I say "should"
> because it actually leaves the */usr/lib64/libfluidsynth.so* and
> */usr/lib64/libfluidsynth.so.1* symlinks behind, so you will have to
> remove those manually as well.

Yeah, as for cleaning the symlinks, I ran into that as well. Seems to be 
another cmake bug?


--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic