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POHow to specify linker dependencies in boost.build Jamroot
 

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  1. POHow to specify linker dependencies in boost.build Jamroot
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    <p>When I try to compile an exec with <code>b2 toolset=clang</code> it uses a linking command like :</p> <pre><code>clang++ -L/apps/bzip2/lib -L/apps/zlib/lib -o fixfast/bin/clang-linux-3.3/release/link-static/fixfast-mds_MCAST fixfast/bin/clang-linux-3.3/release/link-static/fixfastDataD.o /apps/boost/root/bin.v2/libs/date_time/build/clang-linux-3.3/release/link-static/libboost_date_time.a ~/infra_install/lib/libfixfast.a ~/infra_install/lib/libCDef.a -lbz2 -lz -lpthread </code></pre> <p>and fails with a long list of undefined references in boost, whereas the following reordered version of it links fine :</p> <pre><code>clang++ -L/apps/bzip2/lib -L/apps/zlib/lib -o fixfast/bin/clang-linux-3.3/release/link-static/fixfast-mds_MCAST fixfast/bin/clang-linux-3.3/release/link-static/fixfastDataD.o ~/infra_install/lib/libfixfast.a ~/infra_install/lib/libCDef.a /apps/boost/root/bin.v2/libs/date_time/build/clang-linux-3.3/release/link-static/libboost_date_time.a -lbz2 -lz -lpthread </code></pre> <p>I believe the way I am specifying linking dependency of <code>libCDef</code> on <code>/boost/date_time//boost_date_time</code> is probably not enough to have the right order during linking.</p> <p>CDef/Jamroot :</p> <pre><code>project : usage-requirements &lt;include&gt;~/infra_install ; lib CDef : [ glob *.cpp ] : &lt;library&gt;/boost/date_time//boost_date_time &lt;library&gt;/boost/filesystem//boost_filesystem &lt;library&gt;/boost/system//boost_system &lt;library&gt;/boost/iostreams//boost_iostreams &lt;link&gt;static ; install libCDef : CDef : &lt;install-type&gt;LIB &lt;variant&gt;release:&lt;location&gt;"~/infra_install/lib" : release ; </code></pre> <p>I need to specify that CDef depends on boost_date_time and hence the linker should order it as such.</p>
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    1. COPlease clarify your question: I presume your first link command fails, if so what is the link error? Which library is the culprit? And did you read the Boost.Build documentation? Specifically the `linkflags` section.
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    2. CO@rhalbersma I could try to add boost_date_time to `linkflags` in this exe. But what I really want to specify is that whichever exe links against `libCDef`, which is also a part of my project, needs to add `boost_date_time` to the linker command.
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