ports/157217: [PATCH] unbreak graphics/graphviz on -RELEASE (missing log2())

[Christoph Moench-Tegeder]

>Number:         157217
>Category:       ports
>Synopsis:       [PATCH] unbreak graphics/graphviz on -RELEASE (missing log2())
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Fri May 20 17:40:11 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Christoph Moench-Tegeder
>Release:        FreeBSD 8.2-RELEASE-p1 amd64
>Organization:
>Environment:
System: FreeBSD elch.exwg.net 8.2-RELEASE-p1 FreeBSD 8.2-RELEASE-p1 #7: Thu Apr 21 15:56:09 CEST 2011 cmt at elch.exwg.net:/usr/obj/usr/src/sys/CMT amd64

	graphics/graphviz 2.28.0

>Description:
	The build of graphics/graphviz on -RELEASE fails because log2() is
	not defined on those versions. The same problem (log2f() in that case)
	happened with graphics/gegl some time ago (see ports/155183).
>How-To-Repeat:
	try to build graphviz on 8.2-RELEASE
>Fix:

	I blatantly copied the version check from graphics/gegl/files/patch-tools_exp_combine.cpp

diff -Nru graphics/graphviz.orig/files/patch-lib-ortho-trapezoid.c graphics/graphviz/files/patch-lib-ortho-trapezoid.c
--- graphics/graphviz.orig/files/patch-lib-ortho-trapezoid.c	1970-01-01 01:00:00.000000000 +0100
+++ graphics/graphviz/files/patch-lib-ortho-trapezoid.c	2011-05-20 18:59:05.000000000 +0200
@@ -0,0 +1,14 @@
+--- lib/ortho/trapezoid.c.orig	2011-05-20 18:55:22.000000000 +0200
++++ lib/ortho/trapezoid.c	2011-05-20 18:57:31.000000000 +0200
+@@ -30,6 +30,11 @@
+ #define log2(x)  (log(x)/log(2))
+ #endif
+ 
++#include <sys/param.h>
++#if __FreeBSD_version <= 704100 || (__FreeBSD_version >= 800000 && __FreeBSD_version < 802502) || (__FreeBSD_version >= 900000 && __FreeBSD_version < 900027)
++#define log2(x)  (log(x)/log(2))
++#endif
++
+ /* Node types */
+ 
+ #define T_X     1

>Release-Note:
>Audit-Trail:
>Unformatted: