I can't seem to get rid of the 32-bit versions of ladspa plugins. Even with the -abi_x86_32 flag set for the packages in question (ladspa-cmt, ladspa-sdk, swh-plugins, tap-plugins) both versions get installed (under /usr/lib/ladspa and /usr/lib64/ladspa). This is an annoyance because every plugins shows up twice in Audacity. I also have a similar issue with LMMS, every instrument is listed twice. (I don't know which package(s) these instruments come from.)
I have ABI_X86 set to "32 64" in make.conf, does this override the -abi_x86_32 use flag? - Lasse