# - Find CppUnit
# Sets the following variables:
#   CPPUNIT_INCLUDE_DIRS - path to the CppUnit include directory
#   CPPUNIT_LIBRARIES    - path to the CppUnit libraries to be linked against
#   CPPUNIT_DEFINITIONS  - specific CppUnit definitions to be added
#
#  The header cppunit/extensions/HelperMacros.h is looked for.
#  The following libraries are searched  
#        cppunit_dll, or cppunitd_dll (Windows) 
#        cppunit (Linux)
#

#########################################################################
# Copyright (C) 2007-2020  CEA/DEN, EDF R&D, OPEN CASCADE
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
#
# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#

IF(NOT CppUnit_FIND_QUIETLY)
    MESSAGE(STATUS "Looking for CppUnit ...")
ENDIF()

# Headers
SET(CPPUNIT_ROOT_DIR $ENV{CPPUNIT_ROOT_DIR} CACHE PATH "Path to the CPPUNIT.")
IF(CPPUNIT_ROOT_DIR)
  LIST(APPEND CMAKE_INCLUDE_PATH "${CPPUNIT_ROOT_DIR}/include")
  LIST(APPEND CMAKE_PROGRAM_PATH "${CPPUNIT_ROOT_DIR}/bin")
ENDIF(CPPUNIT_ROOT_DIR)

SET(CPPUNIT_INCLUDE_TO_FIND cppunit/extensions/HelperMacros.h)
FIND_PATH(CPPUNIT_INCLUDE_DIRS ${CPPUNIT_INCLUDE_TO_FIND})

# Libraries
IF(WIN32)
  IF(CMAKE_BUILD_TYPE STREQUAL Debug)
    FIND_LIBRARY(CPPUNIT_LIBRARIES cppunitd_dll)
  ELSE(CMAKE_BUILD_TYPE STREQUAL Debug)
    FIND_LIBRARY(CPPUNIT_LIBRARIES cppunit_dll)
  ENDIF(CMAKE_BUILD_TYPE STREQUAL Debug)
ELSE(WIN32)

  # RNV: Some new Linux distributions don't contain cppunit-config executable,
  #      so use pkg-config to detect cppunit first.
  FIND_PACKAGE(PkgConfig QUIET)

  IF(PKG_CONFIG_FOUND)
    PKG_SEARCH_MODULE(CPPUNIT_TOOL cppunit)  
    IF(CPPUNIT_TOOL_FOUND)
      SET(CPPUNIT_LDFLAGS ${CPPUNIT_TOOL_LIBRARIES})
    ENDIF()
  ENDIF()
  
  IF(NOT CPPUNIT_TOOL_FOUND)
    MESSAGE("CPPUNIT is not found via pgk-config, try to find cppunit-config executable ...")
    FIND_PROGRAM(CPPUNIT_CONFIG_BIN cppunit-config)
    IF(NOT CPPUNIT_CONFIG_BIN)
      MESSAGE(FATAL_ERROR "Error in CPPUNIT detection ! cppunit-config executable not found !")     
    ENDIF(NOT CPPUNIT_CONFIG_BIN)
    EXECUTE_PROCESS(COMMAND ${CPPUNIT_CONFIG_BIN} --libs OUTPUT_VARIABLE CPPUNIT_LDFLAGS)
  ENDIF()
  
  STRING(STRIP ${CPPUNIT_LDFLAGS} CPPUNIT_LDFLAGS)
  STRING(REPLACE " " ";" LDFLAGS_LIST ${CPPUNIT_LDFLAGS})
  FOREACH(LDFLAG ${LDFLAGS_LIST})
    STRING(REGEX MATCH "^-L.*" LIBDIR "${LDFLAG}")
    STRING(REGEX MATCH "^-l.*" LIB "${LDFLAG}")
    IF(LIBDIR)
      STRING(REGEX REPLACE "^-L" "" LIBDIR ${LIBDIR})
      LIST(APPEND CMAKE_LIBRARY_PATH ${LIBDIR})
    ELSEIF(LIB)
      STRING(REGEX REPLACE "^-l" "" LIB ${LIB})
      LIST(APPEND LIBS ${LIB})
    ELSE()
      IF(CPPUNIT_CONFIG_BIN)
        MESSAGE(FATAL_ERROR "Unrecognized token \"${LDFLAG}\" in the output of cppunit-config --libs")
      ELSE()
        LIST(APPEND LIBS ${LDFLAG})
      ENDIF()
    ENDIF()
  ENDFOREACH(LDFLAG ${LDFLAGS_LIST})
  FOREACH(LIB ${LIBS})
    FIND_LIBRARY(CPPUNIT_SUBLIB_${LIB} ${LIB})
    IF(NOT CPPUNIT_SUBLIB_${LIB})
      MESSAGE(FATAL_ERROR "Error in CPPUNIT detection! Fail to locate the needed library ${LIB}!")
    ENDIF(NOT CPPUNIT_SUBLIB_${LIB})
    LIST(APPEND CPPUNIT_LIBRARIES ${CPPUNIT_SUBLIB_${LIB}})
  ENDFOREACH(LIB ${LIBS})
#  MESSAGE("**** ${CPPUNIT_LIBRARIES}")
ENDIF(WIN32)

# Global variables
SET(CPPUNIT_DEFINITIONS)
IF(WIN32)
  SET(CPPUNIT_DEFINITIONS -DCPPUNIT_DLL)
ENDIF(WIN32)

INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(CppUnit REQUIRED_VARS CPPUNIT_INCLUDE_DIRS CPPUNIT_LIBRARIES)