+# The following variables should be declared in the including Makefile:
+# CATEGORIES the space-separated list of categories to repackage
+
+# The following variables have default values which can be overriden
+# A2_BASE the space-separated directories where already built a2 categories can be found
+A2_BASE ?=/usr/share/a2 /usr/local/share/a2 $(A2_OUTPUT)
+
+# Third-party libraries
+LOGGER_JAR ?= $(lastword $(foreach base, $(A2_BASE), $(wildcard $(base)/log/syslogger/org.argeo.tp/org.argeo.tp.syslogger.$(SYSLOGGER_BRANCH).jar)))
+BNDLIB_JAR ?= $(lastword $(foreach base, $(A2_BASE), $(wildcard $(base)/org.argeo.tp.build/biz.aQute.bndlib.$(BNDLIB_BRANCH).jar)))