harfbuzz provides CMake targets:

  find_package(harfbuzz CONFIG REQUIRED)
  # HarfBuzz font subsetter
  target_link_libraries(main PRIVATE harfbuzz::harfbuzz-subset)
  # HarfBuzz text shaping library
  target_link_libraries(main PRIVATE harfbuzz::harfbuzz)

harfbuzz provides pkg-config modules:

  # HarfBuzz font subsetter
  harfbuzz-subset

  # HarfBuzz text shaping library
  harfbuzz