Arch Linux

Description:
Due to liblo update, ardour needs a rebuild.

ardour 2.8 build fails with:
Package soundtouch-1.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `soundtouch-1.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'soundtouch-1.0' found
OSError: 'pkg-config --cflags --libs soundtouch-1.0' exited 1:
File "/build/src/ardour-2.8/SConstruct", line 1092:
libraries['soundtouch'].ParseConfig ('pkg-config --cflags --libs soundtouch-1.0')
File "/usr/lib/python2.6/site-packages/SCons/Environment.py", line 1447:
return function(self, self.backtick(command))
File "/usr/lib/python2.6/site-packages/SCons/Environment.py", line 585:
raise OSError("'%s' exited %d" % (command, status))

ardour 2.8.4 (last release) needs vamp-plugin-sdk from AUR:
Package vamp-sdk was not found in the pkg-config search path.
Perhaps you should add the directory containing `vamp-sdk.pc'
to the PKG_CONFIG_PATH environment variable
No package 'vamp-sdk' found
OSError: 'pkg-config --cflags --libs vamp-sdk' exited 1:
File "/build/src/ardour-2.8.4/SConstruct", line 506:
libraries['vamp'].ParseConfig('pkg-config --cflags --libs vamp-sdk')
File "/usr/lib/python2.6/site-packages/SCons/Environment.py", line 1447:
return function(self, self.backtick(command))
File "/usr/lib/python2.6/site-packages/SCons/Environment.py", line 585:
raise OSError("'%s' exited %d" % (command, status))

Additional info:
* ardour 2.8

Steps to reproduce:
$ makepkg