As kindly pointed out by David Leverton there is no requirement to define ESVN_REPO_U...

diff --git a/eclass/subversion.eclass b/eclass/subversion.eclass
index abc8a057e6f3955cd045462ae47ce496085bf9d5..872183d33f435480f14c0799707ac81481f0add3 100644 (file)
--- a/eclass/subversion.eclass
+++ b/eclass/subversion.eclass
@@ -1,6 +1,6 @@
 # Copyright 1999-2008 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/subversion.eclass,v 1.50 2008/02/20 20:36:30 zlin Exp $
+# $Header: /var/cvsroot/gentoo-x86/eclass/subversion.eclass,v 1.51 2008/02/20 22:28:49 zlin Exp $
 
 # @ECLASS: subversion.eclass
 # @MAINTAINER:
@@ -13,8 +13,6 @@
 # @DESCRIPTION:
 # The subversion eclass provides functions to fetch, patch and bootstrap
 # software sources from subversion repositories.
-#
-# You must define the ESVN_REPO_URI variable before inheriting this eclass.
 
 inherit eutils
 
@@ -153,6 +151,10 @@ subversion_fetch() {
        local revision="$(subversion__get_peg_revision "${1:-${ESVN_REPO_URI}}")"
        local S_dest="${2}"
 
+       if [[ -z ${repo_uri} ]]; then
+               die "${ESVN}: ESVN_REPO_URI (or specified URI) is empty."
+       fi
+
        [[ -n "${ESVN_REVISION}" ]] && revision="${ESVN_REVISION}"
 
        # check for the protocol
@@ -431,4 +433,4 @@ subversion_pkg_preinst() {
                        eerror "Could not log the message '${logmessage}' to '${dir}/${PN}.log'"
                fi
        fi
-}
\ No newline at end of file
+}