Hi, I'm currently trying to create multilib libraries compiled with MPX. The main difference with existing multilib variants on i386 target is that new targets (32/mpx, 64/mpx) are compatible with old variants (32, 64). Also we should not prevent user from using mpx if he does not have MPX variants for some libraries - legacy versions should be used instead. Thus we need to check several suffixes instead of one. E.g. for 64bit MPX binary we should firstly check ../lib64/mpx, then check ../lib64 and finally the default one.
I looked at MULTILIB_REUSE and thought it might solve my problem according to documentation: "And for some targets it is better to reuse an existing multilib than to fall back to default multilib when there is no corresponding multilib." [1]. So I tried following declarations: MULTILIB_OSDIRNAMES+= m64/fmpx=../lib64/mpx MULTILIB_REUSE = m64=m64/fmpx But it appeared that only the first entry for some options set counts when multilibs are parsed in gcc.c and my reuse here is just ignored. Is it a wrong implementation of MULTILIB_REUSE or my wrong understanding of this option? Is there a way to implement mpx multilibs still allowing legacy ones when some mpx libs are missing? [1] http://gcc.gnu.org/onlinedocs/gccint/Target-Fragment.html#Target-Fragment Thanks, Ilya
