Portable Object Compiler Code

Portable Object Compiler (c) 1997-2021  All Rights Reserved.

For help, send email to me: stes@telenet.be

0. Get flex and byacc if you don't have them :

   for FLEX (for example flex 2.5.4) :
 
  	http://www.gnu.org/ 

   for BSD yacc (for example yacc-1.9.1) :

   	http://www.ibiblio.org/pub/Linux/devel/compiler-tools/

   It is possible to use myacc or bison :

	export YACC="bison -y -d"

   but I recommend the byacc package (see Changes.txt for some subtle issues)

1. Start with a binary "port" of Portable Object Compiler to get a "bootstrap" (initial) compiler, or compile the bootstrap compiler package : 

	gnutar xvfz objc-2.3.1-bootstrap.tar.gz

	cd objc-2.3.1-bootstrap

	./configure --help
	./configure --prefix=$HOME

	make
	make install

It is important to use the --prefix option if you want to install the compiler in a directory like $HOME/bin.  The default (if no --prefix is specified) is to install into /usr/local/bin,/usr/local/include,/usr/local/man etc.  

The configure script has to find a C compiler for all this to work.
You may have to set the CC variable to prevent 'gcc' from being used :

	e.g. on HP-UX,

		CC='cc -Aa'
		export CC
		./configure --prefix=$HOME 

	or on IRIX,

		CC='cc -ansi -common'
		export CC
		./configure --prefix=$HOME

	or on Digital Unix,

		CC='cc -std'
		export CC
		./configure --prefix=$HOME

Other settings for CC can be "clang" or "icc".

2. Make sure that the bootstrap compiler (objc) is in the PATH :

	PATH="$PATH:$HOME/bin";export PATH
   or
	setenv PATH "$PATH:$HOME/bin"

3. After step 2 (set the PATH !), go to the actual compiler sources :

	gnutar xvfz objc-2.3.1.tar.gz

	cd objc-2.3.1

	./configure --help
	./configure --prefix=$HOME

	make
	make install

4.  [Optional] Repeat step 3 to test the compiler (do not repeat step 1).