#
# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#
-FIND_PROGRAM(SWIG_EXECUTABLE swig)
-SET(SWIG_FLAGS -c++ -python -shadow)
+# ------
+
+MESSAGE(STATUS "Check for swig ...")
+
+# ------
+
+IF(SWIG_IS_MANDATORY STREQUAL 0)
+ SET(SWIG_IS_MANDATORY 0)
+ SET(SWIG_IS_OPTIONAL 1)
+ENDIF(SWIG_IS_MANDATORY STREQUAL 0)
+IF(SWIG_IS_OPTIONAL STREQUAL 0)
+ SET(SWIG_IS_MANDATORY 1)
+ SET(SWIG_IS_OPTIONAL 0)
+ENDIF(SWIG_IS_OPTIONAL STREQUAL 0)
+IF(NOT SWIG_IS_MANDATORY AND NOT SWIG_IS_OPTIONAL)
+ SET(SWIG_IS_MANDATORY 1)
+ SET(SWIG_IS_OPTIONAL 0)
+ENDIF(NOT SWIG_IS_MANDATORY AND NOT SWIG_IS_OPTIONAL)
+
+# ------
+
+SET(SWIG_STATUS 1)
+IF(WITHOUT_SWIG OR WITH_SWIG STREQUAL 0)
+ SET(SWIG_STATUS 0)
+ MESSAGE(STATUS "swig disabled from command line.")
+ENDIF(WITHOUT_SWIG OR WITH_SWIG STREQUAL 0)
+
+# ------
+
+IF(SWIG_STATUS)
+ IF(WITH_SWIG)
+ SET(SWIG_ROOT_USER ${WITH_SWIG})
+ ENDIF(WITH_SWIG)
+ IF(NOT SWIG_ROOT_USER)
+ SET(SWIG_ROOT_USER $ENV{SWIG_ROOT})
+ ENDIF(NOT SWIG_ROOT_USER)
+ IF(NOT SWIG_ROOT_USER)
+ SET(SWIG_ROOT_USER $ENV{SWIGHOME})
+ ENDIF(NOT SWIG_ROOT_USER)
+ENDIF(SWIG_STATUS)
+
+# ------
+
+IF(SWIG_STATUS)
+ SET(SWIG_EXECUTABLE_TO_FIND swig)
+ IF(SWIG_ROOT_USER)
+ FIND_PROGRAM(SWIG_EXECUTABLE ${SWIG_EXECUTABLE_TO_FIND} PATHS ${SWIG_ROOT_USER}/bin NO_DEFAULT_PATH)
+ ELSE(SWIG_ROOT_USER)
+ FIND_PROGRAM(SWIG_EXECUTABLE ${SWIG_EXECUTABLE_TO_FIND})
+ ENDIF(SWIG_ROOT_USER)
+ IF(SWIG_EXECUTABLE)
+ MESSAGE(STATUS "${SWIG_EXECUTABLE_TO_FIND} found: ${SWIG_EXECUTABLE}")
+ ELSE(SWIG_EXECUTABLE)
+ MESSAGE(STATUS "${SWIG_EXECUTABLE_TO_FIND} not found, try to use WITH_SWIG option or SWIG_ROOT (or SWIGHOME) environment variable")
+ SET(SWIG_STATUS 0)
+ ENDIF(SWIG_EXECUTABLE)
+ENDIF(SWIG_STATUS)
+
+# ----
+
+IF(SWIG_STATUS)
+ SET(SWIG_FLAGS -c++ -python -shadow)
+ELSE(SWIG_STATUS)
+ IF(SWIG_IS_MANDATORY)
+ MESSAGE(FATAL_ERROR "swig not found ... mandatory ... abort")
+ ELSE(SWIG_IS_MANDATORY)
+ MESSAGE(STATUS "swig not found ... optional ... disabled")
+ ENDIF(SWIG_IS_MANDATORY)
+ENDIF(SWIG_STATUS)
+
+# ----
