tnt@rei ~/projects/ext/scopehal/scopehal-apps/_build $ cmake .. -DCMAKE_INSTALL_PREFIX=/opt/scopehal/
-- The C compiler identification is GNU 13.2.1
-- The CXX compiler identification is GNU 13.2.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found Git: /usr/bin/git (found version "2.43.0")
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1")
-- Checking for module 'cairomm-1.0'
--   Found cairomm-1.0, version 1.14.4
-- Checking for module 'sigc++-2.0'
--   Found sigc++-2.0, version 2.12.0
-- Checking for module 'gtk+-3.0'
--   Found gtk+-3.0, version 3.24.39
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found OpenMP_C: -fopenmp (found version "4.5")
-- Found OpenMP_CXX: -fopenmp (found version "4.5")
-- Found OpenMP: TRUE (found version "4.5")
-- Found glslc: /usr/bin/glslc
CMake Error at lib/scopehal/CMakeLists.txt:31 (find_package):
  By not providing "FindYAML.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "YAML", but
  CMake did not find one.

  Could not find a package configuration file provided by "YAML" with any of
  the following names:

    YAMLConfig.cmake
    yaml-config.cmake

  Add the installation prefix of "YAML" to CMAKE_PREFIX_PATH or set
  "YAML_DIR" to a directory containing one of the above files.  If "YAML"
  provides a separate development package or SDK, be sure it has been
  installed.