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The general rule for bfd_arch_info_type->compatible (A, B) is that if A and B are compatible, then this function should return architecture that is more "feature-rich", that is, can run both A and B. ARCv2, EM and HS all has same mach number, so bfd_default_compatible assumes they are the same, and returns an A. That causes issues with GDB, because GDB assumes that if machines are compatible, then "compatible ()" always returns same machine regardless of argument order. As a result GDB gets confused because, for example, compatible(ARCv2, EM) returns ARCv2, but compatible(EM, ARCv2) returns EM, hence GDB is not sure if they are compatible and prints a warning. bfd/ChangeLog: yyyy-mm-dd Anton Kolesov Anton.Kolesov@synopsys.com cpu-arc.c (arc_compatible): New function.
README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems.