> A while ago H.J. Lu adviced to use -march/-mtune instead of -mcpu > options. But I wonder which front-end you need to use? It looks like > gcc-3.0.2 lists the option as a target-specific one but does not > accept it when you pass it. I use gcc-3.0.2, which as you say does not support -march, but I found that with the latest binutils + the new -march/-mipsN patch at http://sources.redhat.com/ml/binutils/2001-10/msg00526.html a GCCFLAGS of -mips2 -wa,-m4100,--trap does a good job of letting the compiler generate mips2 while still letting me use 4100-specific instructions in inline assembly (for example). > Also, I notice the compiler in H.J.'s port is something like > gcc-2.96.something. Assuming this is also the version of the > cross-compiler, how come I don't see this release on the official gcc > web page? How do his tools relate to the gcc releases? I think the general background is something like this: - GCC released gcc-2.95, so their CVS incremented to 2.96 - RedHat distributed the CVS version of GCC, and called it gcc-2.96 - GCC incremented their CVS version again to 2.97 to attempt to clear up the confusion - RedHat's version maybe incremented to 2.97 at some point? RedHat always throws on a ton of patches on top of released stuff, and H.J. added lots more MIPS-related patches, so his port is basically a CVS snapshot + tons of general and MIPS-specific patches. I once went through the trouble of extracting the RPM and building a .tar.gz that included all of the patches, but it didn't seem to behave any differently from my point of view than gcc-3.0.2, so I'm using that instead. I can send you this .tar.gz if you'd like. -jim
