Add function ctkFunctionGetGccVersion

CMake/ctkFunctionGetGccVersion.cmake

@@ -0,0 +1,34 @@
+###########################################################################
+#
+#  Library:   CTK
+#
+#  Copyright (c) Kitware Inc.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.commontk.org/LICENSE
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+###########################################################################
+
+FUNCTION(ctkFunctionGetGccVersion path_to_gcc output_var)
+  IF(CMAKE_COMPILER_IS_GNUCXX)
+    EXECUTE_PROCESS(
+      COMMAND ${path_to_gcc} -dumpversion
+      RESULT_VARIABLE result
+      OUTPUT_VARIABLE output
+      ERROR_VARIABLE error
+      )
+    IF(result)
+      MESSAGE(FATAL_ERROR "Failed to obtain compiler version running [${path_to_gcc} -dumpversion]: ${error}")
+    ENDIF()
+    SET(${output_var} ${output} PARENT_SCOPE)
+  ENDIF()
+ENDFUNCTION()

CMakeLists.txt

@@ -168,6 +168,7 @@ INCLUDE(CMake/ctkFunctionGeneratePluginManifest.cmake)
 INCLUDE(CMake/ctkMacroGeneratePluginResourceFile.cmake)
 INCLUDE(CMake/ctkFunctionCheckCompilerFlags.cmake)
 INCLUDE(CMake/ctkFunctionGetIncludeDirs.cmake)
+INCLUDE(CMake/ctkFunctionGetGccVersion.cmake)
 
 #-----------------------------------------------------------------------------
 # Testing