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POLinking program with Boost.Asio using waf build system
 

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  1. POLinking program with Boost.Asio using waf build system
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    <p>I'm trying to build <a href="http://www.boost.org/doc/libs/1_40_0/doc/html/boost_asio/tutorial/tuttimer1/src.html" rel="nofollow noreferrer">simplest Boost.Asio tutorial example "timer1"</a> (it's in timer.cpp) with waf on Debian squeeze, python 2.6.6.</p> <blockquote> <p>root@ds:/var/timer# ls</p> <p>timer.cpp wscript</p> </blockquote> <p>wscript here is a config of waf:</p> <pre><code>#! /usr/bin/env python top = '.' out = '.' def options(opt): opt.load('compiler_cxx') def configure(conf): conf.load('compiler_cxx') conf.env['LINKFLAGS'] = '--verbose -L/usr/local/lib -lboost_system' def build(bld): tgen = bld.new_task_gen() tgen.features = 'cxx cxxprogram' tgen.source = 'timer.cpp' tgen.target = 'timer' tgen.includes = '.' tgen.update_outputs = True </code></pre> <p><code>waf configure</code> is successfull.</p> <p>But <code>waf --verbose build</code> finishes with error (I inserted <code>&lt;*&gt;</code> below to mark a line)</p> <pre><code>Waf: Entering directory `/var/timer' [1/2] cxx: timer.cpp -&gt; timer.cpp.1.o [2/2] cxxprogram: timer.cpp.1.o -&gt; timer timer.cpp.1.o: In function `__static_initialization_and_destruction_0(int, int)': timer.cpp:(.text+0x103): undefined reference to `boost::system::generic_category()' timer.cpp:(.text+0x10f): undefined reference to `boost::system::generic_category()' ... Build failed -&gt; task in 'timer' failed (exit status 1): {task 38446736: cxxprogram timer.cpp.1.o -&gt; timer} &lt;*&gt; ['/usr/bin/g++', '--verbose -L/usr/local/lib -lboost_system', 'timer.cpp.1.o', '-o', '/var/timer/timer', '-Wl,-Bstatic', '-Wl,-Bdynamic'] </code></pre> <p>It seems gcc called by waf didn't find boost_system library during linkage.</p> <p>But everything works fine if I build example by gcc without waf.</p> <pre><code>root@ds:/var/timer# /usr/bin/g++ --verbose -I/var/flake/lib/boost timer.cpp -c -o timer.cpp.1.o ... &lt;**&gt; root@ds:/var/timer# /usr/bin/g++ --verbose -L/usr/local/lib -lboost_system timer.cpp.1.o -o timer -Wl,-Bstatic -Wl,-Bdynamic ... root@ds:/var/timer# ls timer.cpp timer.cpp.1.o timer wscript </code></pre> <p>As you can see command line used by waf (marked by <code>&lt;*&gt;</code> ) is identical with command line marked by <code>&lt;**&gt;</code>. But the result is completely different. Why? And how can I force waf to build that thing? Solution from <a href="https://stackoverflow.com/questions/9151304/waf-cannot-find-an-existing-library">here</a> doesn't work for me too. Also tried </p> <pre><code>... opt.tool_options('boost') ... conf.load('compiler_cxx boost') conf.check_boost() ... tgen.uselib = 'BOOST' ... </code></pre> <p>but without any effect</p> <p>And another question. Output of <code>gcc --verbose</code> is much more extensive than output of <code>waf --verbose</code>. It seemed to me that <code>verbose</code> option must force waf to display all such info. Why isn't that true? waf option -vvv doesn't display this info as well.</p>
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