AAPT=$(SDK)/platform-tools/aapt
APKBUILDER=$(SDK)/tools/apkbuilder
ZIPALIGN_A=$(SDK)/tools/zipalign
-ZIPALIGN_B=$(SDK)/build-tools/*/zipalign
+ZIPALIGN_B=$(shell ls $(SDK)/build-tools/*/zipalign | tail -1)
JAVA_SRC_DIR=src/org/altusmetrum/AltosDroid
EXT_LIBDIR=libs