Incidentally, it is also bad because those values are only the defaults. This process:
$ cmake -DCMAKE_INSTALL_PREFIX=oops ../src # initial configure
$ cmake -DCMAKE_INSTALL_PREFIX=what_i_meant ../src
leaves the install still looking at oops because the INSTALL_BIN_DIR was initialized with oops/bin and won’t be updated with the new prefix selection. There’s been a