Depending on the platform the boost python examples do not<br>always build.<br>On Linux (gcc/boost1.42) this is not an issue. If we compile <br>BOOST_ROOT/libs/python/example/std_pair_ext<br>...<br>This builds a shared library std_pair_ext.so<br>
<br>ldd bin/gcc-4.2.1/debug/std_pair_ext.so <br>        linux-gate.so.1 =&gt;  (0xffffe000)<br>        libboost_python.so.1.42.0 =&gt; /var/tmp/ma0/boost/boost_1_42_0/bin.v2/libs/python/build/gcc-4.2.1/debug/libboost_python.so.1.42.0 (0xb7e7e000)<br>
        libutil.so.1 =&gt; /lib/libutil.so.1 (0xb7e58000)<br>        libpthread.so.0 =&gt; /lib/libpthread.so.0 (0xb7e40000)<br>        libdl.so.2 =&gt; /lib/libdl.so.2 (0xb7e3c000)<br>        libstdc++.so.6 =&gt; /usr/local/apps/gcc/4.2.1/ILP32/lib/gcc/i686-pc-linux-gnu/4.2.1/libstdc++.so.6 (0xb7d4e000)<br>
        libm.so.6 =&gt; /lib/libm.so.6 (0xb7d29000)<br>        libgcc_s.so.1 =&gt; /usr/local/apps/gcc/4.2.1/ILP32/lib/gcc/i686-pc-linux-gnu/4.2.1/libgcc_s.so.1 (0xb7d1d000)<br>        libc.so.6 =&gt; /lib/libc.so.6 (0xb7be9000)<br>
        /lib/ld-linux.so.2 (0x80000000)<br><br>It can be seen that libutil, libpthread,libstdc , etc, get implicitly linked.<br>Its not clear if this controlled by python-extension rule, or ldconfig <br>or bjam rules for building shared libs ?<br>
<br>However on HPUX(aCC/boost 1.42), the equivalent libs for<br>aCC compiler do not get linked, as a result the examples fail <br>during the import step, due to unresolved symbols.<br><br>For my app, currently I am using python-extension rule in my jamfile, <br>
and hence suffer the same problems.<br>Is there a way for me change python-extension rule ,  so<br>that the additional std libs on HPUX get pulled in ?<br><br>If not, is there any way, hacky or not, of conditionally adding<br>
the libs for HPUX only. i.e _equivalent_ to:<br><br>#ifdef LINUX<br>lib pthread  ;<br>python-extension ecf_ext : [ glob src/*.cpp ]<br>            ...<br>             pthread<br>           : &lt;variant&gt;debug:&lt;define&gt;DEBUG<br>
           ;<br clear="all">#endif<br><br>#ifdef HPUX<br>lib pthread  ;<br>lib std_v2 ;<br>lib stream ;<br>lib Csup ;<br>lib unwind ;<br>lib m ;<br>python-extension ecf_ext : [ glob src/*.cpp ]<br>         .....<br>         pthread<br>
         std_v2<br>         stream<br>         Csup<br>         unwind<br>         m<br>           : &lt;variant&gt;debug:&lt;define&gt;DEBUG<br>           ; <br>#endif<br><br>Any help appreciated.<br><br>   Best regards,<br>
Ta,<br>    Avi<br><br>