add directory gnu

gnu/gcc/gcc-2.2.2/README.ENCAP

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+1/3/89 Pace Willisson
+
+Here is what to do to bring up GCC & tools on an 80386 running system 5.3
+(if you are adventurous and want to use the latest and greatest tools.
+If you want it to be easy, check back in a couple of months.)
+
+All of these instructions assume you are using the usg compiler.  After
+you get to the end, you could start over using the GNU compiler, but 
+that may not work yet ...
+
+First make gcc, cc1, cpp, and gnulib:
+
+	cd .../gcc
+	config.gcc i386-sysv-gas
+	make start.encap
+
+Don't try to bootstrap the compiler with itself at this point,
+since it can't really be used until GAS and the converted libraries
+are installed.
+
+Now you must copy `cc1' and `cpp' and `gnulib' into the directory
+`/usr/local/lib/gcc-lib/i386-sysv-gas/VERSION', where VERSION stands for
+the GCC version number.  Also install `gcc' in a directory in your
+path.
+
+Now, make the GNU assembler:
+
+	cd .../gas
+	make a386
+	cp a386 /usr/local/lib/gcc-lib/i386-sysv-gas/VERSION
+
+Now, make the other utilities:
+
+	cd .../binutils
+
+edit Makefile to turn on the CFLAGS for USG using COFF_ENCAPSULATE
+
+	make
+	cp ld /usr/local/lib/gcc-lib/i386-sysv-gas/VERSION
+
+Put the other programs (size nm strip ar objdump and ranlib) somewhere
+handy, but don't clobber your usg programs.  I put them all in
+/usr/gnu/gnucomp, and I have this shell script in my path under the name "gnu":
+
+	exec /usr/gnu/gnucomp/$*
+
+That way, I can say "gnu nm a.out", etc.
+
+Convert the libraries to the encapsulated format:
+
+	make libc.a
+	cp libc.a /usr/local/lib/gnu/libc.a
+
+	cp .../gcc/gnulib usg-gnulib
+	make gnulib
+	cp gnulib /usr/local/lib/gcc-lib/i386-sysv-gas/VERSION
+
+	robotussin /lib/crt0.o /usr/local/lib/gcc-crt0.o
+
+Now add the parts of `gnulib' that are compiled with GCC, 
+and install the complete `gnulib' in place of the partial one.
+
+	cp gnulib .../gcc
+	cd .../gcc
+	make rest.encap
+	cp gnulib /usr/local/lib/gcc-lib/i386-sysv-gas/VERSION
+
+Now, you should be able to use 'gcc' to compile programs.
+If you want to bootstrap GCC with itself, this can now be done.