The FAQ list is under (constant) development. If you post a question on the Issues forum (https://github.com/synesissoftware/CLASP/issues) it will be used to create one.
See instructions in INSTALL.md.
For a C API-only build (no STLSoft / xTests):
$ ./prepare_cmake.sh --no-cpp --disable-testingNOTE: --no-cpp alone still configures tests, and tests still need
STLSoft (via xTests). Add --disable-testing / -T to
elide both.
Yes, under the ./test/unit and ./test/component directories.