Add CITUS_NAME and CITUS_EDITION

Unambiguous places to check whether we're running simply Citus or Citus
Enterprise, or to check for 'community' or 'enterprise'.

configure

@@ -2342,6 +2342,26 @@ fi
 done
 
 
+# CITUS_NAME definition
+
+cat >>confdefs.h <<_ACEOF
+#define CITUS_NAME "$PACKAGE_NAME"
+_ACEOF
+
+
+case $PACKAGE_NAME in
+  'Citus Enterprise') citus_edition=enterprise ;;
+               Citus) citus_edition=community ;;
+                   *) as_fn_error $? "Unrecognized package name." "$LINENO" 5 ;;
+esac
+
+# CITUS_EDITION definition
+
+cat >>confdefs.h <<_ACEOF
+#define CITUS_EDITION "$citus_edition"
+_ACEOF
+
+
 # CITUS_MAJORVERSION definition
 CITUS_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\.[0-9][0-9]*\)'`
 

configure.in

@@ -12,6 +12,18 @@ AC_COPYRIGHT([Copyright (c) 2012-2017, Citus Data, Inc.])
 AC_PROG_SED
 AC_PROG_AWK
 
+# CITUS_NAME definition
+AC_DEFINE_UNQUOTED(CITUS_NAME, "$PACKAGE_NAME", [Citus full name as a string])
+
+case $PACKAGE_NAME in
+  'Citus Enterprise') citus_edition=enterprise ;;
+               Citus) citus_edition=community ;;
+                   *) AC_MSG_ERROR([Unrecognized package name.]) ;;
+esac
+
+# CITUS_EDITION definition
+AC_DEFINE_UNQUOTED(CITUS_EDITION, "$citus_edition", [Citus edition as a string])
+
 # CITUS_MAJORVERSION definition
 [CITUS_MAJORVERSION=`expr "$PACKAGE_VERSION" : '\([0-9][0-9]*\.[0-9][0-9]*\)'`]
 AC_DEFINE_UNQUOTED(CITUS_MAJORVERSION, "$CITUS_MAJORVERSION", [Citus major version as a string])

src/include/citus_config.h.in

@@ -10,12 +10,18 @@
  */
 
 
+/* Citus edition as a string */
+#undef CITUS_EDITION
+
 /* Extension version expected by this Citus build */
 #undef CITUS_EXTENSIONVERSION
 
 /* Citus major version as a string */
 #undef CITUS_MAJORVERSION
 
+/* Citus full name as a string */
+#undef CITUS_NAME
+
 /* Citus version as a string */
 #undef CITUS_VERSION
 

src/include/citus_version.h.in

@@ -1,5 +1,11 @@
 /* This file is created manually */
 
+/* Citus full name as a string */
+#undef CITUS_NAME
+
+/* Citus edition as a string */
+#undef CITUS_EDITION
+
 /* Extension version expected by this Citus build */
 #undef CITUS_EXTENSIONVERSION