evaluating variables to set options

[Georg Schwarz <georg.schwarz%freenet.de@localhost>]

In an options.mk I'm doing the following:

...

.include "../../mk/bsd.options.mk"

...

.if !empty(PKG_OPTIONS:Mskey)
. include "../../security/skey/buildlink3.mk"
CONFIGURE_ARGS+=        --with-skey=${BUILDLINK_PREFIX.skey}
. if defined(IS_BUILTIN.skey) && ${IS_BUILTIN.skey} == no
# pkgsrc's version uses three arguments only
CPPFLAGS+=              -DOLDSKEY
. endif
.else
CONFIGURE_ARGS+=        --without-skey.endif
.endif


now the problem is that if this is run before the tools stage (which  
is the case if the package is built in one step) it seems that  
BUILDLINK_PREFIX.skey and IS_BUILTIN.skey are not defined when  
options.mk is parsed. Consequently CONFIGURE_ARGS and CPPFLAGS do not  
get correctly appended.
options.mk gets included from the package's Makefile.

What's the correct way of handling that situation?


--
Georg Schwarz    http://home.pages.de/~schwarz/
georg.schwarz%freenet.de@localhost  +49 151 11559652