graphviz-2.12 compile error after Xorg

[David Southwell]

Many thanks for all the work on Xorg - everything gone well except:
Graphviz failed on
# portupgrade -a

afterwards reporting error :
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        then mv -f ".deps/gv_lua.Tpo" ".deps/gv_lua.Plo"; else 
rm -f ".deps/gv_lua.Tpo"; exit 1; fi
 
c++ -DHAVE_CONFIG_H -I. -I. -I../.. -I../.. -I../../lib/gvc -I../../lib/common -I../../lib/graph -I../../lib/cdt -I../../lib/pathplan -I/usr/local/lib/perl5/5.8.8/mach/CORE -I/usr/local/include/python2.4 -I/usr/local/lib/ruby/1.8/amd64-freebsd6 -I/usr/local/include/tcl8.4 -I/usr/local/include/tcl8.4/generic -I/usr/local/include -I/usr/local/include -I/usr/local/include/tcl8.4 -I/usr/local/include/tk8.4 -I/usr/local/include/php/Zend -I/usr/local/include/lua51 -I/usr/local/include -O2 -fno-strict-aliasing -pipe -MT 
gv_lua.lo -MD -MP -MF .deps/gv_lua.Tpo -c 
gv_lua.cpp  -fPIC -DPIC -o .libs/gv_lua.o
In file included from gv_lua.cpp:711:
/usr/include/malloc.h:3:2: #error "<malloc.h> has been replaced by <stdlib.h>"
gmake[3]: *** [gv_lua.lo] Error 1
gmake[3]: Leaving directory 
`/usr/ports/graphics/graphviz/work/graphviz-2.12/tclpkg/gv'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory 
`/usr/ports/graphics/graphviz/work/graphviz-2.12/tclpkg'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/ports/graphics/graphviz/work/graphviz-2.12'
gmake: *** [all] Error 2
*** Error code 2

Stop in /usr/ports/graphics/graphviz.
*** Error code 1

Stop in /usr/ports/graphics/graphviz.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portupgrade.89319.49 
env UPGRADE_TOOL=portupgrade UPGRADE_PORT=graphviz-2.12_1 
UPGRADE_PORT_VER=2.12_1 make
** Fix the problem and try again.
---------------------------

I have searched UPGRADE but found no reference to graphviz

What I have not done?


Thanks in advance

david