* Makefile.in (NEWLIB_NANO_TARGET_BOARDS): New.
(build-libc): Change build-newlib to stamps/build-newlib. Add
stamps/build-newlib-nano.
(check-newlib-nano, check-gcc-newlib-nano, check-binutils-newlib-nano)
(check-gdb-newlib-nano, report-newlib-nano): New.
(check-dhrystone-linux, check-dhrystone-newlib): Delete first version
of these rules.
(build-gcc-newlib-stage1): Use --with-sysroot.
(build-newlib-nano, merge-newlib-nano): New.
(build-gcc-newlib-stage2): Depend on merge-newlib-nano. Use
--with-sysroot instead of --with-headers. Also use
--with-native-system-header-dir.
(build-dejagnu): Install it.
(check-gcc-newlib, check-gcc-linux, check-dhrystone-newlib-%)
(check-dhrystone-linux-%, check-binutils-newlib, check-binutils-linux)
(check-gdb-newlib, check-gdb-linux): Drop
DEJAGNULIBS environment variable set.
(check-gcc-newlib-nano, check-dhrystone-newlib-nano)
(check-dhrystone-newlib-nano-%, check-binutils-newlib-nano)
(check-gdb-newlib-nano, report-gcc-newlib-nano)
(report-dhrystone-newlib-nano, report-binutils-newlib-nano)
(report-gdb-newlib-nano): New.
(Makefile): Add rule to rebuild when Makefile.in changes.
(test/benchmarks/dhrystone/check): Add -specs= option. Use it in
$cc commands.
Jim Wilson
Palmer Dabbelt