# - Locate gnutls library
# This module defines
#  GNUTLS_LIBRARY, the library to link against
#  GNUTLS_FOUND, if false, do not try to link to JPEG
#  GNUTLS_INCLUDE_DIR, where to find headers.

IF(NOT UNIX)
   MESSAGE(STATUS "Ignore gnutls: It's not Unix enviroment")
   RETURN()
ENDIF()

GET_CMAKE_PROPERTY(_variableNames VARIABLES)
LIST (SORT _variableNames)
FOREACH (_variableName ${_variableNames})
    MESSAGE(STATUS "${_variableName}=${${_variableName}}")
ENDFOREACH()

IF(GNUTLS_LIBRARY AND GNUTLS_INCLUDE_DIR)
  # in cache already
  SET(GNUTLS_FIND_QUIETLY TRUE)
ENDIF()

# Save default suffixes
SET(_OLD_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})

# Define specific suffixes
SET(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_SHARED_LIBRARY_SUFFIX})

FIND_PATH(GNUTLS_INCLUDE_DIR
  gnutls.h
  PATHS
  $ENV{GNUTLS_DIR}/include
  /usr/local/include
  /usr/include/gnutls
  /usr/include
  /sw/include
  /opt/local/include
  /opt/csw/include
  /opt/include
  PATH_SUFFIXES gnutls
)

FIND_LIBRARY(GNUTLS_LIBRARY
  NAMES gnutls libgnutls
  PATHS
  $ENV{GNUTLS_DIR}/lib
  /usr/local/lib
  /usr/lib
  /usr/lib/x86_64-linux-gnu/
  /usr/local/X11R6/lib
  /usr/X11R6/lib
  /sw/lib
  /opt/local/lib
  /opt/csw/lib
  /opt/lib
  /usr/freeware/lib64
)

# Restore default suffixes
SET(CMAKE_FIND_LIBRARY_SUFFIXES ${_OLD_SUFFIXES})

IF(GNUTLS_LIBRARY AND GNUTLS_INCLUDE_DIR)
  SET(GNUTLS_FOUND "YES")
  IF(NOT GNUTLS_FIND_QUIETLY)
    MESSAGE(STATUS "Found gnutls: ${GNUTLS_LIBRARY}")
  ENDIF()
ELSE()
  IF(NOT GNUTLS_FIND_QUIETLY)
    MESSAGE(STATUS "Warning: Unable to find gnutls!")
  ENDIF()
ENDIF()