Re: [Boost-users] Boost Graph Reading and Writing ATT graphviz example compile error

Doug Gregor wrote:

On Jan 11, 2005, at 1:38 PM, Welson Sun wrote:

...

Hi,

My platform is Linux (Fedora Core 2), gcc version: gcc (GCC) 3.3.3 20040412 (Red Hat Linux 3.3.3-7)

I need to read and write the ATT graphviz format, so this is what I did:

1. Generated the libbgl-viz library. In boost_1_32_0/libs/graph/src/ directory, use the default Makefile, generated the libbgl-viz library without error. And I copied them to /usr/local/lib

2. g++ boost_1_32_0/libs/graph/example/graphviz.cpp, but I got the nasty error:

ccVhyZaG.o(.text+0x602):graphviz.cpp: undefined reference to `boost::read_graphviz(std::basic_string

[snip error] collect2: ld returned 1 exit status

What's the matter?

Add -lbgl-viz to the end of your "g++" command line to link in the GraphViz reader code.

Doug

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OK, I think the library is all right, because I just copied the code from boost_1_32_0/libs/graph/doc/write-graphviz.html to a C++ file, and it compiled and ran pretty well. So I think the problem is that the example code : boost_1_32_0/libs/graph/example/graphviz.cpp is wrong in the way it calls read_graphviz(). By the way, I just set LD_LIBRARY_PATH to /usr/local/lib, and when compiling, I didn't add any compile options. Welson