[Bug 197894] graphics/exact-image fails to build when USE_GCC=yes implies GCC 4.9

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197894

            Bug ID: 197894
           Summary: graphics/exact-image fails to build when USE_GCC=yes
                    implies GCC 4.9
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: bf at FreeBSD.org
          Reporter: gerald at FreeBSD.org
                CC: mandree at FreeBSD.org
            Blocks: 196712
             Flags: maintainer-feedback?(bf at FreeBSD.org)
          Assignee: bf at FreeBSD.org

This is related to PR 196712 and blocks updating the default version of
GCC from 4.8 to 4.9.

I believe what is happening here is that OpenEXR uses GCC on older 
versions of FreeBSD and when linking with the OpenEXR libraries we
then fail to pull in the proper NEWER GCC run-time libraries.

This can be fixed by building (or at least linking) with the same
compiler that OpenEXR is built with.  See OpenEXR/Makefile for how
this is done there. 

http://package18.nyi.freebsd.org/data/93i386-default-PR196712/2015-01-18_16h49m19s/logs/errors/exact-image-0.8.9_9.log

c++ -O2 -pipe -fno-strict-aliasing -I utility/ -fPIC -funroll-loops
-fomit-frame-pointer -fpermissive -I/usr/local/include -I .
-I/usr/local/include/agg2 -I/usr/local/include/freetype2 -I lib -I utility
-pthread -I/usr/local/include/OpenEXR -I codecs/ -I bardecode -I utility -I
utility    -o 'objdir/frontends/econvert' objdir/frontends/econvert.o
objdir/lib/lib.a objdir/codecs/lib.a objdir/bardecode/bardecode.a
objdir/utility/ArgumentList.o objdir/utility/File.o    -L/usr/local/lib
-Wl,-rpath,/usr/local/lib -lagg -laggfontfreetype -L/usr/local/lib -lfreetype 
-ljpeg -ltiff  -lpng -lgif -ljasper -lIlmImf -L/usr/local/lib -lImath-2_2
-lIexMath-2_2 -lHalf -lIex-2_2 -lIlmThread-2_2 -pthread -L/usr/local/lib -llcms
-lexpat -lz  
/usr/local/lib/libIlmImf.so: undefined reference to
`std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'
build/bottom.make:84: recipe for target 'objdir/frontends/econvert' failed
gmake: *** [objdir/frontends/econvert] Error 1
rm objdir/frontends/econvert.o
*** [do-build] Error code 1

--- Comment #1 from Bugzilla Automation <bugzilla at FreeBSD.org> ---
Auto-assigned to maintainer bf at FreeBSD.org

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