the ladspa header file (ladspa.h)
Download the source tarball from the link below and unpack.
Go to the directory that was created when you unpacked this archive and then run:
make
make install (as root)
The plugins will install into "/usr/local" by default. (change the Makefile if you'd like to have them in an alternate location)
Building (Debian and derivatives)
Packages for Debian and derivatives (Ubuntu etc) can have deb packages built from this archive. You'll need a Debian build environment.
To install the build environment and package dependencies run the following:
sudo apt-get install build-essential \
debhelper fakeroot ladspa-sdk
Go to the directory that was created when you unpacked this archive and then run:
dpkg-buildpackage -rfakeroot -tc
Once done you'll find a 'deb' package for your system in the directory above. Use your favourite package manager to install.
The plugins will install into "/usr" by default.
For more information on these plugins please visit Launchpad.
Enjoy!