With that, only the following in bld_prepare was needed to build
Cinelerra-gg:
"arch")
pacman -Syu gtk2 nasm yasm cmake fftw patchelf boost boost-libs \
base-devel libvdpau libva perl-xml-parser perl-carp libogg texinfo \
libsndfile

Sounds good. I have added this -- please check attached.

It seems to me the other platforms pull in far too much in
bld_prepare.shfor building CinGG.

As you discover unnecessary items, send me the modified bld_prepare.sh.