OpenCV/opencv/modules/videoio/cmake/detect_ximea.cmake

if(NOT HAVE_XIMEA)
  if(WIN32)
    get_filename_component(regpath "[HKEY_CURRENT_USER\\Software\\XIMEA\\CamSupport\\API;Path]" ABSOLUTE)
    if(NOT EXISTS ${regpath})
      get_filename_component(regpath "[HKEY_LOCAL_MACHINE\\SOFTWARE\\XIMEA\\API_SoftwarePackage;Path]" ABSOLUTE)
    endif()
  endif()
  if(X86_64)
    set(lib_dir "API/x64" "API/64bit")
    set(lib_suffix "64")
  else()
    set(lib_dir "API/x86" "API/32bit")
    set(lib_suffix "32")
  endif()
  find_path(XIMEA_INCLUDE "xiApi.h"
    PATHS "${XIMEA_ROOT}" ENV XIMEA_ROOT "/opt/XIMEA"
    HINTS "${regpath}"
    PATH_SUFFIXES "include" "API")
  find_library(XIMEA_LIBRARY m3api xiapi${lib_suffix}
    PATHS "${XIMEA_ROOT}" ENV XIMEA_ROOT "/opt/XIMEA"
    HINTS "${regpath}"
    PATH_SUFFIXES ${lib_dir})
  if(XIMEA_INCLUDE AND XIMEA_LIBRARY)
    set(HAVE_XIMEA TRUE)
  endif()
endif()

if(HAVE_XIMEA)
  ocv_add_external_target(ximea "${XIMEA_INCLUDE}" "${XIMEA_LIBRARY}" "HAVE_XIMEA")
endif()