1 files changed, 89 insertions, 0 deletions
diff --git a/cmake/Modules/GrComponent.cmake b/cmake/Modules/GrComponent.cmake
new file mode 100644
index 000000000..cbae1c4ff
--- /dev/null
+++ b/cmake/Modules/GrComponent.cmake
@@ -0,0 +1,89 @@
+# Copyright 2010-2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio 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 General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+
+IF(DEFINED __INCLUDED_GR_COMPONENT_CMAKE)
+    RETURN()
+ENDIF()
+SET(__INCLUDED_GR_COMPONENT_CMAKE TRUE)
+
+SET(_gr_enabled_components "" CACHE INTERNAL "" FORCE)
+SET(_gr_disabled_components "" CACHE INTERNAL "" FORCE)
+
+IF(NOT DEFINED ENABLE_DEFAULT)
+    SET(ENABLE_DEFAULT ON)
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "The build system will automatically enable all components.")
+    MESSAGE(STATUS "Use -DENABLE_DEFAULT=OFF to disable components by default.")
+ENDIF()
+
+########################################################################
+# Register a component into the system
+# - name: canonical component name
+# - var: variable for enabled status
+# - argn: list of dependencies
+########################################################################
+FUNCTION(GR_REGISTER_COMPONENT name var)
+    INCLUDE(CMakeDependentOption)
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "Configuring ${name} support...")
+    FOREACH(dep ${ARGN})
+        MESSAGE(STATUS "  Dependency ${dep} = ${${dep}}")
+    ENDFOREACH(dep)
+
+    #setup the dependent option for this component
+    CMAKE_DEPENDENT_OPTION(${var} "enable ${name} support" ${ENABLE_DEFAULT} "${ARGN}" OFF)
+    SET(${var}_ "${${var}}" CACHE INTERNAL "" FORCE)
+
+    #append the component into one of the lists
+    IF(${var})
+        MESSAGE(STATUS "  Enabling ${name} support.")
+        LIST(APPEND _gr_enabled_components ${name})
+    ELSE(${var})
+        MESSAGE(STATUS "  Disabling ${name} support.")
+        LIST(APPEND _gr_disabled_components ${name})
+    ENDIF(${var})
+    MESSAGE(STATUS "  Override with -D${var}=ON/OFF")
+
+    #make components lists into global variables
+    SET(_gr_enabled_components ${_gr_enabled_components} CACHE INTERNAL "" FORCE)
+    SET(_gr_disabled_components ${_gr_disabled_components} CACHE INTERNAL "" FORCE)
+ENDFUNCTION(GR_REGISTER_COMPONENT)
+
+########################################################################
+# Print the registered component summary
+########################################################################
+FUNCTION(GR_PRINT_COMPONENT_SUMMARY)
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "######################################################")
+    MESSAGE(STATUS "# Gnuradio enabled components                         ")
+    MESSAGE(STATUS "######################################################")
+    FOREACH(comp ${_gr_enabled_components})
+        MESSAGE(STATUS "  * ${comp}")
+    ENDFOREACH(comp)
+
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "######################################################")
+    MESSAGE(STATUS "# Gnuradio disabled components                        ")
+    MESSAGE(STATUS "######################################################")
+    FOREACH(comp ${_gr_disabled_components})
+        MESSAGE(STATUS "  * ${comp}")
+    ENDFOREACH(comp)
+
+    MESSAGE(STATUS "")
+ENDFUNCTION(GR_PRINT_COMPONENT_SUMMARY)