I&#39;m trying learn how to create a Python extension using bjam, and I&#39;m walking through the basic &quot;Hello World&quot; tutorial on <a href="http://boost.org">boost.org</a>. Running bjam compiles my code into an object file, but for some reason it is not able to create a shared library. Here&#39;s what I see:<br>
<br>...patience...<br>...patience...<br>...found 1573 targets...<br>...updating 11 targets...<br>common.mkdir bin<br>common.mkdir bin/gcc-4.0.1<br>common.mkdir bin/gcc-4.0.1/debug<br>gcc.compile.c++ bin/gcc-4.0.1/debug/hello.o<br>
gcc.link.dll /usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/libboost_python.dylib<br><b>i686-apple-darwin8-g++-4.0.1: unrecognized option &#39;-shared&#39;</b><br>/usr/libexec/gcc/i686-apple-darwin8/4.0.1/ld: unknown flag: -R<br>
collect2: ld returned 1 exit status<br><br>    &quot;g++&quot; -L&quot;/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib&quot; -L&quot;/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config&quot; -Wl,-R -Wl,&quot;/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib&quot; -Wl,-R -Wl,&quot;/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/config&quot;  -o &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/libboost_python.dylib&quot; -Wl,-h -Wl,libboost_python.dylib -shared -Wl,--start-group &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/numeric.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/list.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/long.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/dict.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/tuple.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/str.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/slice.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/converter/from_python.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/converter/registry.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/converter/type_id.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/enum.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/class.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/function.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/inheritance.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/life_support.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/pickle_support.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/errors.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/module.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/converter/builtin_converters.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/converter/arg_to_python_base.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/iterator.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/stl_iterator.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object_protocol.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object_operators.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/wrapper.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/import.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/exec.o&quot; &quot;/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/object/function_doc_signature.o&quot;  -Wl,-Bstatic  -Wl,-Bdynamic -lpython2.5 -Wl,--end-group -g <br>
<br>...failed gcc.link.dll /usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug/libboost_python.dylib...<br>...skipped &lt;pbin/gcc-4.0.1/debug&gt;hello_ext.so for lack of &lt;p/usr/local/boost/bin.v2/libs/python/build/gcc-4.0.1/debug&gt;libboost_python.dylib...<br>
common.mkdir bin/hello.test<br>common.mkdir bin/hello.test/gcc-4.0.1<br>common.mkdir bin/hello.test/gcc-4.0.1/debug<br>...skipped &lt;pbin/hello.test/gcc-4.0.1/debug&gt;hello for lack of &lt;pbin/gcc-4.0.1/debug&gt;hello_ext.so...<br>
...failed updating 1 target...<br>...skipped 3 targets...<br>...updated 7 targets...<br><br><br><br><br>I&#39;m not sure what is going wrong, but I know that the -dynamiclib flag is needed instead of the -shared flag on OS X. Could this is what is going wrong? I wouldn&#39;t know how to change bjam to use -dynamiclib instead of -shared in any case.<br>
Thanks for any help that anyone can provide.<br><br>Aditya<br>