ports/171949: graphics/graphviz: install: Unable to find pthread_create symbol. Aborting.

[Oliver Hartmann]

>Number:         171949
>Category:       ports
>Synopsis:       graphics/graphviz: install: Unable to find pthread_create symbol. Aborting.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 25 13:00:24 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Oliver Hartmann
>Release:        FreeBSD 10.0-CURRENT/amd64 CLANG & FreeBSD 9.1-PRE/amd64 CLANG
>Organization:
FU Berlin
>Environment:
>Description:
Installation of port graphics/graphviz fails du to the below shown error. Building, either with CLANG (3.1 and 3.2) or GCC46 works fine. But the final installation process, "make install", ends up with the following error: 

gmake[5]: Entering directory `/usr/ports/graphics/graphviz/work/graphviz-2.28.0/cmd/dot'
(cd /usr/local/bin; if test -x dot; then for i in neato twopi fdp circo osage patchwork sfdp; do rm -f $i; ln -s dot $i; done; fi;)
if test "x" = "x"; then if test -x /usr/local/bin/dot; then if test -x /sbin/ldconfig; then /sbin/ldconfig 2>/dev/null; fi; /usr/local/bin/dot -c; else /usr/local/bin/dot_static -c; fi; fi
Unable to find pthread_create symbol. Aborting.
gmake[5]: *** [install-exec-hook] Abort trap (core dumped)

>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
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