FindGPIOD.cmake

# - Try to find GPIOD
# Once done this will define
#
#  GPIOD_FOUND - system has libgpiod
#  GPIOD_INCLUDE_DIR - the libgpiod include directory
#  GPIOD_LIBRARIES - Link these to use libgpiod
#
# N.B. This is for C++ only, you need to include
#
#include <gpiod.hpp>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

if (GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)

  # in cache already
  set(GPIOD_FOUND TRUE)
  message(STATUS "Found libgpiod: ${GPIOD_LIBRARIES}")

else (GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)

  find_path(GPIOD_INCLUDE_DIR gpiod.hpp
    ${_obIncDir}
    ${GNUWIN32_DIR}/include
    /usr/local/include
  )

  find_library(GPIOD_LIBRARIES NAMES gpiodcxx
    PATHS
    ${_obLinkDir}
    ${GNUWIN32_DIR}/lib
    /usr/local/lib
  )

  if(GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)
    set(GPIOD_FOUND TRUE)
  else (GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)
    set(GPIOD_FOUND FALSE)
  endif(GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)


  if (GPIOD_FOUND)
    if (NOT GPIOD_FIND_QUIETLY)
      message(STATUS "Found GPIOD: ${GPIOD_LIBRARIES}")
    endif (NOT GPIOD_FIND_QUIETLY)
  else (GPIOD_FOUND)
    if (GPIOD_FIND_REQUIRED)
      message(FATAL_ERROR "libgpiod not found. Please install libgpiod-dev")
    endif (GPIOD_FIND_REQUIRED)
  endif (GPIOD_FOUND)

  mark_as_advanced(GPIOD_INCLUDE_DIR GPIOD_LIBRARIES)
  
endif (GPIOD_INCLUDE_DIR AND GPIOD_LIBRARIES)