Changeset 6fc973e in rtems for c/src/lib/libbsp/unix

Patch from Ralf Corsepius <corsepiu@…>:

Here is another fix, which addresses a few more or less severe bugs in
configuration and unix/posix:

• Configuration fix: c/src/lib/configure.in didn't handle RDBG correctly

• Configuration fix: make depend was non-functional in c/src/lib/libc/Makefile.in
• Configuration fix: stray comment removed from aclocal/target.m4

• RTEMS fix: termios support for unix/posix now uses the host's headers only (was completely broken).
• Don't install RTEMS's newlib sys/termios.h for unix (sys/termios.h apparently is a newlib specific header)
• To be able to compile RTEMS's termios.c with glibc2.1, glibc-2.1 needs USE_MISC, which is a private define from gcc's features.h, being defined only when _BSD_SOURCE of _SVID_SOURCE is defined. RTEMS's termios apparently implements BSD, thus -D_BSD_SOURCE was added to Linux-posix.cfg.
• Conflicting definitions for USE_MISC and _BSD_SOURCE inside of RTEMS codes removed due to definition of _BSD_SOURCE on the toplevel.

This fix has been tested with linux/posix (primary glibc2.1 native),
linux/posix (secondary libc5 native), sh/gensh1, i386/pc386 and a couple
of other bsp's/CPU.

To apply:

cd <srcdir>
patch -p1 < rtems-rc-19990709-9.diff

and

aclocal -I aclocal && automake && autoconf
cd c/src/lib; autoconf

or

./autogen