RE: [Boost-users] Boost Graph Reading and Writing ATTgraphviz example compile error

12 Jan 2005


      Yeah, I am. The error is the same for both Cygwin and Linux.

-----Original Message-----
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Douglas Gregor
Sent: Tuesday, January 11, 2005 6:44 PM
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Boost Graph Reading and Writing ATTgraphviz
example compile error


On Jan 11, 2005, at 5:28 PM, Welson Sun wrote:
...
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.
Are you compiling with:

   g++ boost_1_32_0/libs/graph/example/graphviz.cpp -lbgl-viz

?

	Doug

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