# ----------------------------------------------------------------------------
#  CppADCodeGen: C++ Algorithmic Differentiation with Source Code Generation:
#    Copyright (C) 2012 Ciengis
#
#  CppADCodeGen is distributed under multiple licenses:
#
#   - Eclipse Public License Version 1.0 (EPL1), and
#   - GNU General Public License Version 3 (GPL3).
#
#  EPL1 terms and conditions can be found in the file "epl-v10.txt", while
#  terms and conditions for the GPL3 can be found in the file "gpl3.txt".
# ----------------------------------------------------------------------------
#
# - Try to find CppAD
# Once done this will define
#  CPPAD_FOUND - System has CppAD
#  CPPAD_INCLUDE_DIRS - The CppAD include directories
#  CPPAD_LIBRARY_DIRS - The library directories needed to use CppAD
#  CPPAD_LIBRARIES    - The libraries needed to use CppAD

IF (CPPAD_INCLUDES AND CPPAD_LIBRARIES)
  SET(CPPAD_FIND_QUIETLY TRUE)
ENDIF ()


IF(DEFINED CPPAD_HOME)

  FIND_PATH(CPPAD_INCLUDE_DIR NAMES cppad/cppad.hpp
            PATHS  "${CPPAD_HOME}"
            NO_DEFAULT_PATH)

  FIND_LIBRARY(CPPAD_IPOPT_LIBRARY
               cppad_ipopt
               PATHS  "${CPPAD_HOME}/lib"
               NO_DEFAULT_PATH)

  SET(CPPAD_INCLUDE_DIRS ${CPPAD_INCLUDE_DIR})
  SET(CPPAD_LIBRARIES ${CPPAD_IPOPT_LIBRARY})

ELSE()

  FIND_PACKAGE(PkgConfig)
  
  IF( PKG_CONFIG_FOUND )
    pkg_check_modules( CPPAD QUIET cppad)
  ENDIF()
  
    
  IF( NOT CPPAD_FOUND )
    FIND_PATH(CPPAD_INCLUDE_DIR NAMES cppad/cppad.hpp
              HINTS  $ENV{CPPAD_HOME}
                     "/usr/include" )
            
    FIND_LIBRARY(CPPAD_IPOPT_LIBRARY 
                 cppad_ipopt
                 HINTS "$ENV{CPPAD_HOME}/lib"
                       "/usr/lib" )
 
    IF( CPPAD_FOUND )
      SET(CPPAD_INCLUDE_DIRS ${CPPAD_INCLUDE_DIR})
      SET(CPPAD_LIBRARIES ${CPPAD_IPOPT_LIBRARY})
    ENDIF()

    INCLUDE(FindPackageHandleStandardArgs)
    # handle the QUIETLY and REQUIRED arguments and set CPPAD_FOUND to TRUE
    # if all listed variables are TRUE
    find_package_handle_standard_args(CppAD  DEFAULT_MSG
                                      CPPAD_INCLUDE_DIRS)

    MARK_AS_ADVANCED(CPPAD_INCLUDE_DIRS CPPAD_LIBRARIES)

  ENDIF()
ENDIF()

    
IF( CPPAD_FOUND AND NOT CPPAD_FIND_QUIETLY )
  MESSAGE(STATUS "package CppAD found")
ENDIF()
