#
# The default value of this option changes depending whether we're on
# development mode (in which case it's "true") or not (in which case
-# it's "false").
+# it's "false"). The $development variable is set by the GDB_AC_COMMON
+# macro, which must therefore be used before GDB_AC_SELFTEST.
AS_IF([test "x$development" != xtrue && test "x$development" != xfalse],
[AC_MSG_ERROR([Invalid value for \$development, got "$development", expecting "true" or "false".])])