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Subject: [Boost-users] [graph] linking error read_graphviz
From: Tillmann Vogt (tillvogt_at_[hidden])
Date: 2010-02-21 02:49:09


Hello,

My aim is to parse the graphviz-dot format with boost.
The two examples from the getting-started web page build fine (in Ubuntu
9.10 and also Windows 7)

Building graph-thingie.cpp in VC9.0 with boost 1.42 gives this error:

example.obj : error LNK2001: unresolved external symbol "bool __cdecl
boost::detail::graph::read_graphviz(class std::basic_string<char,struct
std::char_traits<char>,class std::allocator<char> > const &,class
boost::detail::graph::mutate_graph *)"
(?read_graphviz_at_graph@detail_at_boost@@YA_NABV?$basic_string_at_DU?$char_traits_at_D@std@@V?$allocator_at_D@2@@std@@PAVmutate_graph_at_123@@Z)
1>C:\Users\till\Documents\Visual Studio
2008\Projects\example\Release\example.exe : fatal error LNK1120: 1
unresolved externals

The next thing I tried was building the "boost_graph" library separately
by executing bjam in libs/graph/build

which generated C:\Program Files
(x86)\boost\boost_1_42\bin.v2\libs\graph\build\msvc-9.0\debug\libboost_graph-vc90-mt-1_42.lib
and also a .lib in the release folder.

The two new libs seem to be same as in boost/lib/ because they have the
same size.
So the question is:

Do I really have to build "boost_graph" library separately to use the
GraphViz readers,
like it says on
http://www.boost.org/doc/libs/1_42_0/libs/graph/doc/read_graphviz.html?

I tried several compiler options and have all 8 variations of
libboost_graph-vc90 ... .lib in /boost/lib,
but no idea how the compiler magically choses the right one.

I don't know what to try next, since I get similar errors on Ubuntu 9.10
(on Ubuntu boost 1.38 is preinstalled).


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