uhd: implemented top-level component registry

now docs, examples, utils, usb, are configurable components with dependencies

1 files changed, 82 insertions, 0 deletions

diff --git a/host/config/Component.cmake b/host/config/Component.cmake
new file mode 100644
index 000000000..5384cc53f
--- /dev/null
+++ b/host/config/Component.cmake
@@ -0,0 +1,82 @@
+#
+# Copyright 2010 Ettus Research LLC
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+########################################################################
+SET(_uhd_enabled_components "" CACHE INTERNAL "" FORCE)
+SET(_uhd_disabled_components "" CACHE INTERNAL "" FORCE)
+
+########################################################################
+# Register a component into the system
+# Usage: LIBUHD_REGISTER_COMPONENT(<name> <var> <enb> <deps> <dis>)
+########################################################################
+FUNCTION(LIBUHD_REGISTER_COMPONENT name var)
+    INCLUDE(CMakeDependentOption)
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "Configuring ${name} support...")
+    IF(DEFINED ${var})
+        MESSAGE(STATUS "${name} support configured ${var}=${${var}}")
+    ELSE(DEFINED ${var}) #not defined: automatic enabling of component
+        MESSAGE(STATUS "${name} support configured automatically")
+    ENDIF(DEFINED ${var})
+
+    #setup the dependent option for this component
+    CMAKE_DEPENDENT_OPTION(${var} "enable ${name} support" ${ARGN})
+
+    #remove previous occurrence of component in either list
+    IF(DEFINED _uhd_enabled_components)
+        LIST(REMOVE_ITEM _uhd_enabled_components ${name})
+    ENDIF(DEFINED _uhd_enabled_components)
+    IF(DEFINED _uhd_disabled_components)
+        LIST(REMOVE_ITEM _uhd_disabled_components ${name})
+    ENDIF(DEFINED _uhd_disabled_components)
+
+    #append the component into one of the lists
+    IF(${var})
+        MESSAGE(STATUS "  Enabling ${name} support.")
+        LIST(APPEND _uhd_enabled_components ${name})
+    ELSE(${var})
+        MESSAGE(STATUS "  Disabling ${name} support.")
+        LIST(APPEND _uhd_disabled_components ${name})
+    ENDIF(${var})
+
+    #make components lists into global variables
+    SET(_uhd_enabled_components ${_uhd_enabled_components} CACHE INTERNAL "" FORCE)
+    SET(_uhd_disabled_components ${_uhd_disabled_components} CACHE INTERNAL "" FORCE)
+ENDFUNCTION(LIBUHD_REGISTER_COMPONENT)
+
+########################################################################
+# Print the registered component summary
+########################################################################
+FUNCTION(UHD_PRINT_COMPONENT_SUMMARY)
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "######################################################")
+    MESSAGE(STATUS "# LibUHD enabled components                           ")
+    MESSAGE(STATUS "######################################################")
+    FOREACH(comp ${_uhd_enabled_components})
+        MESSAGE(STATUS "  * ${comp}")
+    ENDFOREACH(comp)
+
+    MESSAGE(STATUS "")
+    MESSAGE(STATUS "######################################################")
+    MESSAGE(STATUS "# LibUHD disabled components                          ")
+    MESSAGE(STATUS "######################################################")
+    FOREACH(comp ${_uhd_disabled_components})
+        MESSAGE(STATUS "  * ${comp}")
+    ENDFOREACH(comp)
+
+    MESSAGE(STATUS "")
+ENDFUNCTION(UHD_PRINT_COMPONENT_SUMMARY)