HTS Installation and Demo Errors and Solutions

Error about x2x not being found: The scripts expect a different directory structure for SPTK than the one which is actually there. I fixed this with a new directory in my SPTK folder called installation/bin where I just copied all the binaries right into the bin/ instead of the way they are originally, which is e.g. bin/x2x/x2x
- Even easier than having to copy / symlink stuff into installation/bin is to
  mkdir installation
  configure --prefix=/path/to/installation
  make
  make install
  (this is for SPTK.) Everything will be there after that.

HGraf X11 error when you run make for HTS (installation, not demo): for ./configure you should instead run ./configure CFLAGS=-I/usr/X11R6/include
delta.c:589: internal compiler error: Segmentation fault: 11 when compiling SPTK: The fix was to change bin/delta/Makefile "CC" from "gcc" to "clang" and doing the top-level make again.
Installing ActiveTcl with Snack: had to install it with a .dmg instead of the usual compile. The files got installed to /usr/local/bin/tclsh8.4

Error: HTS voices cannot be loaded. When running the demo. This was fixed by installing an older version of the hts_engine instead of the latest one: Version 1.05, which can be found here.
- Note that this was for HTS-2.2. With HTS-2.3, I also encountered errors related to using wrong versions of dependencies. Follow the README and be extra careful that everything is the right version.
/usr/bin/sox WARN sox: Option `-2' is deprecated, use `-b 16' instead.
/usr/bin/sox WARN sox: Option `-s' is deprecated, use `-e signed-integer' instead.
/usr/bin/sox WARN sox: Option `-2' is deprecated, use `-b 16' instead.
In step WGEN1 of the demo, change $SOXOPTION from '2' to 'b 16' in Config.pm. Then, in Training.pl, look for all invocations of sox and change the option -s to -e signed-integer. This fixes it.