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Add info about distinguishing freebsd versions.

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Submitted by:	obrien@cs.ucdavis.edu
This commit is contained in:
John Fieber 1996-01-28 16:36:24 +00:00
parent 02ae573ca8
commit 63da77f219
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13664
1 changed files with 26 additions and 4 deletions
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30
share/doc/handbook/porting.sgml
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@ -1,4 +1,4 @@
<!-- $Id: porting.sgml,v 1.10 1995/12/04 17:58:44 jfieber Exp $ -->
<!-- $Id: porting.sgml,v 1.11 1995/12/07 13:22:15 jkh Exp $ -->
<!-- The FreeBSD Documentation Project -->
<sect1><heading>Porting an existing piece of free software<label id="porting"></heading>
@ -96,9 +96,31 @@ the ports collection.
to use the <tt>BSD</tt> macros described above. If there
actually is a FreeBSD specific change (such as special
shared library options when using `<tt>ld</tt>') then it's
OK to use <tt>__FreeBSD__</tt> and `<tt>#if __FreeBSD_ &gt;
OK to use <tt>__FreeBSD__</tt> and `<tt>#if __FreeBSD__ &gt;
1</tt>' to detect a FreeBSD 2.x system.
If you need more granduarity in detecting FreeBSD systems since
2.0-RELEASE you can use the following:
<tscreen><verb>
#if __FreeBSD__ >= 2
#include <osreldate.h>
# if __FreeBSD_version >= 199504
/* 2.0.5+ release specific code here */
# endif
#endif
</verb></tscreen>
<tt>__FreeBSD_version</tt> values:
<tscreen><verb>
2.0-RELEASE: 199411
2.1-current's: 199501, 199503
2.0.5-RELEASE: 199504
2.1.0-RELEASE: 199511
2.2-current before 2.1: 199508
2.2-current as 10 Jan 1996: 199512 (will certainly be bumped)
</verb></tscreen>
The pattern is the year followed by the month.
</itemize>
<p>In the dozens of ports that have been done, there have
@ -134,7 +156,7 @@ the ports collection.
# Date created: 5 December 1994
# Whom: asami
#
# $Id: porting.sgml,v 1.10 1995/12/04 17:58:44 jfieber Exp $
# $Id: porting.sgml,v 1.11 1995/12/07 13:22:15 jkh Exp $
#
DISTNAME= oneko-1.1b
@ -889,7 +911,7 @@ lib/libtcl.so.7.3
person who wrote this Makefile]
# Whom: Satoshi Asami <asami@FreeBSD.ORG>
#
# $Id: porting.sgml,v 1.10 1995/12/04 17:58:44 jfieber Exp $
# $Id: porting.sgml,v 1.11 1995/12/07 13:22:15 jkh Exp $
[ ^^^^ don't worry about this...it will be automatically filled in by CVS when
it is committed to our repository]
#