Imported existing code

indra/cmake/BuildVersion.cmake

@@ -0,0 +1,23 @@
+# -*- cmake -*-
+
+function (build_version _target)
+  # Read version components from the header file.
+  file(STRINGS ${LIBS_OPEN_DIR}/llcommon/llversion${_target}.h lines
+       REGEX " LL_VERSION_")
+  foreach(line ${lines})
+    string(REGEX REPLACE ".*LL_VERSION_([A-Z]+).*" "\\1" comp "${line}")
+    string(REGEX REPLACE ".* = ([0-9]+);.*" "\\1" value "${line}")
+    set(v${comp} "${value}")
+  endforeach(line)
+
+  # Compose the version.
+  set(${_target}_VERSION "${vMAJOR}.${vMINOR}.${vPATCH}.${vBUILD}")
+  if (${_target}_VERSION MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$")
+    message(STATUS "Version of ${_target} is ${${_target}_VERSION}")
+  else (${_target}_VERSION MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$")
+    message(FATAL_ERROR "Could not determine ${_target} version (${${_target}_VERSION})")
+  endif (${_target}_VERSION MATCHES "^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$")
+
+  # Report version to caller.
+  set(${_target}_VERSION "${${_target}_VERSION}" PARENT_SCOPE)
+endfunction (build_version)