+# Check that we have what we need, or die quickly.
+# The paths are not the same on all platforms, unfortunately.
+#test -e /bin/tar || die 1 "I need tar to compile. Please fix your slave."
+#test -e /bin/gzip || die 1 "I need gzip to compile. Please fix your slave."
+#test -e /usr/include/libunwind.h || die 1 "I need libunwind to compile. Please fix your slave."
+#test -e /usr/include/valgrind/valgrind.h || die 1 "I need valgrind to compile. Please fix your slave."
+