$NetBSD: README.OpenServer5,v 1.4 2022/04/01 17:19:28 gdt Exp $

XXX You should change your /bin/sh to shells/pdksh under OpenServer 5.0.7/3.2!!

Supported platforms
===================
- Xinuos SCO OpenServer 5.0.7/3.2

Prerequisite softwares
======================
- SCO OpenServer 5 Development System with Maintenance Pack 4 update
- GCC 4.2.4
- GNU binutils 2.24

Compiler
========
C compiler that is shipped with OpenServer 5 Development System cannot
build pkgsrc/devel/bmake. Please use GCC 4.2.4 built from scratch.
You can follow "How to build gcc-4.2.4 for SCO OpenServer 5.0.7/.3.2"
steps.

Prebuilt GCC is not available, because it contains proprietary header files
in its directory structure (GCC fixincludes mechanism).

Selecting which ABI to use
==========================
Xinuos SCO OpenServer 5.0.7 can handle COFF and ELF binaries.
I have tested only ELF binaries.
But OpenServer 5.0.7's native CC generates COFF by default.

Start bootstrapping pkgsrc
==========================
PREFER_PKGSRC=yes build is recommended.

	# ./bootstrap --prefer-pkgsrc yes

And you must remove libtool-base that is built and installed during
bootstrap with

	$ pkg_delete -ff libtool-base

It contains the path to bootstrap working directory and does not work properly.
And rm command cannot accept "rm -f". You should install sysutils/coreutils
and put the following line to your mk.conf.

	TOOLS_PLATFORM.rm?=/a/pkg/bin/grm

How to build gcc-4.2.4 for SCO OpenServer 5.0.7/3.2
====================================================
To follow these steps, you must have SCO OpenServer 5 Development System.

OpenServer 5.0.7's tar command does not support builtin gzip or bzip2
support. You should use pipe.

	$ gzcat make-3.79.1.tar.gz | tar xvf -

For configure newer GNU packages, you should replace your /bin/sh with
ksh from pkgsrc/shells/pdksh!!


1. Build GNU make 3.79.1 from make-3.79.1.tar.gz
   Use OpenServer's native CC, AS, LD, and MAKE.

	$ cd make-3.79.1
	$ ./configure --prefix=$HOME/tools
	$ make
	$ make install

2. Build GCC 2.95.3 C compiler from GNU official gcc-core-2.95.3.tar.gz
   with minimal patch (*1)
   Use OpenServer's native CC, AS, LD, and GNU make.
   In this stage, you cannot build C++ compiler with internel compiler error.

	$ mkdir build0
	$ cd build0
	$ PATH=$HOME/tools/bin:$PATH ../gcc-2.95.3/configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

3. Build GCC 2.95.3 C and C++ compilers from GNU official
   gcc-core-2.95.3.tar.gz and gcc-g++-2.95.3.tar.gz with minimal patch
   (*1 and *2)
   Use OpenServer's native AS, LD, GCC, and GNU make.
   In this stage, you can build C++ compiler with GCC C compiler.

	$ mkdir build1
	$ cd build1
	$ PATH=$HOME/tools/bin:$PATH ../gcc-2.95.3/configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

4. Build GNU m4 1.4.3 from m4-1.4.3.tar.gz
   Use OpenServer's native AS, LD, GNU make, and GCC.

	$ cd m4-1.4.3
	$ PATH=$HOME/tools/bin:$PATH ./configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

5. Build GNU bison 2.0 from bison-2.0.tar.gz
   Use OpenServer's native AS, LD, GNU make, and GCC.

	$ cd  bison-2.0
	$ PATH=$HOME/tools/bin:$PATH ./configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

6. Build flex 2.5.4 from flex-2.5.4a.tar.bz2
   Use OpenServer's native AS, LD, GNU make, and GCC.

	$ cd flex-2.5.4a
	$ PATH=$HOME/tools/bin:$PATH ./configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

7. Build texinfo 4.8 with texinfo-4.8.tar.gz
   Use OpenServer's native AS, LD, GNU make, and GCC.

	$ cd texinfo-4.8
	$ PATH=$HOME/tools/bin:$PATH ./configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

8. Build GNU gperf 2.7.2 from gperf-2.7.2.tar.gz
   Use OpenServer's native AS, LD, GNU make, and GCC (including g++).

	$ cd gperf-2.7.2
	$ PATH=$HOME/tools/bin:$PATH ./configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

9. Build GCC 2.95.3pl4 (bootstrap) from Xinuos gnutools-5.0.7Kj-SRC.tar.bz2
   Use OpenServer's native LD, AS, GNU make, and GCC.

	$ mkdir build2
	$ cd build2
	$ PATH=$HOME/tools/bin:$PATH ../gcc-2.95.3/configure --prefix=$HOME/tools
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make bootstrap
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

10. Build GNU binutils 2.14pl1 from Xinuos gnutools-5.0.7Kj-SRC.tar.bz2
    Use OpenServer's native LD, AS, GNU make, and GCC.
    LD from binutils is not available.

	$ mkdir binutils-build0
	$ cd binutils-build0
	$ PATH=$HOME/tools/bin:$PATH ../binutils-2.14/configure --prefix=$HOME/tools2
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools/bin:$PATH $HOME/tools/bin/make install

11. Build GCC 2.95.3pl4 (bootstrap) again
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ mkdir build3
	$ cd build3
	$ PATH=$HOME/tools2/bin:$HOME/tools/bin:$PATH ../gcc-2.95.3/configure --prefix=$HOME/tools2 --with-gnu-as
	$ PATH=$HOME/tools2/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make bootstrap
	$ PATH=$HOME/tools2/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make install

12. Build GNU binutils 2.14pl1 from Xinuos gnutools-5.0.7Kj-SRC.tar.bz2
    Use OpenServer's native LD, AS, GNU make, and GCC.

	$ mkdir binutils-build1
	$ cd binutils-build1
	$ PATH=$HOME/tools2/bin:$PATH ../binutils-2.14/configure --prefix=$HOME/tools3
	$ PATH=$HOME/tools2/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools2/bin:$PATH $HOME/tools/bin/make install

13. Build GCC 4.2.4 with patch (*3)
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.
    XXX You cannot use native TAR to extract GCC 4.2.4's tar ball!!

	$ mkdir 42build0
	$ cd 42build0
	$ PATH=$HOME/tools3/bin:$HOME/tools2/bin:$HOME/tools/bin:$PATH ../gcc-4.2.4/configure --prefix=$HOME/tools3 --with-gnu-as --disable-nls --enable-languages=c
	$ PATH=$HOME/tools3/bin:$HOME/tools2/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make
	$ PATH=$HOME/tools3/bin:$HOME/tools2/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make install

14. Build GNU binutils 2.24 with patch (*4)
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ mkdir 224binutils
	$ cd 224binutils
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH ../binutils-2.24/configure --prefix=$HOME/tools4 --disable-nls --disable-werror
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH ~/tools/bin/make
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH ~/tools/bin/make install

15. Build GCC 4.2.4 (bootstrap) with patch (*3)
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ mkdir 42build1
	$ cd 42build1
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH ../gcc-4.2.4/configure --prefix=$HOME/tools4 --with-gnu-as --disable-nls --enable-languages=c
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make bootstrap
	$ PATH=$HOME/tools3/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make install

16. Build GNU binutils 2.24 with patch (*4)
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ mkdir 224binutils
	$ cd 224binutils
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ../binutils-2.24/configure --prefix=/opt/prebuilt --disable-nls --disable-werror
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make
	# PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make install

17. Build GNU gmp 4.2.4 from gmp-4.2.4.tar.gz
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ cd gmp-4.2.4
	$ PATH=/opt/prebuilt/bin:$PATH ./configure --prefix=/opt/prebuilt --build=i386-pc-sco3.2v5.0.7
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make
	# PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make install

18. Build mpfr 2.3.2 from mpfr-2.3.2.tar.gz
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ cd mpfr-2.3.2
	$ PATH=/opt/prebuilt/bin:$PATH ./configure --prefix=/opt/prebuilt
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make
	# PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make install

19. Build GNU mpc 0.8.2 from mpc-0.8.2.tar.gz
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.

	$ cd mpc-0.8.2
	$ PATH=/opt/prebuilt/bin:$PATH ./configure --prefix=/opt/prebuilt
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make
	# PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ~/tools/bin/make install

20. Build GCC 4.2.4 fullset (bootstrap) with patch (*3)
    Use OpenServer's native LD, GNU binutils (AS), GNU make, and GCC.
    After this step, it is ready to bootstrap pkgsrc with GCC 4.2.4.

	$ mkdir 42build2
	$ cd 42build2
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH ../gcc-4.2.4/configure --prefix=/opt/prebuilt --with-gnu-as --disable-nls
	$ PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make bootstrap
	# PATH=$HOME/tools4/bin:$HOME/tools/bin:$PATH $HOME/tools/bin/make install

Patches
=======
There are in
http://ftp.netbsd.org/pub/NetBSD/misc/ryoon/SCO-OpenServer-5.0.7_3.2/ .
(*1) gcc-2.95.3-SCO-OpenServer5.0.7_3.2-C-fix.diff
(*2) gcc-2.95.3-SCO-OpenServer5.0.7_3.2-C++-fix.diff
(*3) gcc-4.2.4-SCO-OpenServer-5.0.7_3.2.diff
(*4) binutils-2.24-SCO-OpenServer-5.0.7_3.2.diff