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PODynamic linking error with statically linked boost library
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18695384
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20998623
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1
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9
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CreationDate
2013-09-09T09:36:42.053
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0
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2015-01-29T03:34:51.237
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2015-01-29T03:34:51.237
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193619
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1256392
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1
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2
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2271
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text
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I am on Windows(MSVC 2012) and with Boost v1.54, I compiled Boost.Log (my small project depends on it) with following parameters: <pre><code>b2.exe link=static variant=release runtime-link=shared --with-log stage </code></pre> So the log module is compiled and dynamically linked to C Runtime Library. Then my small project uses CMake to manage, and I add option to link boost statically: <pre><code>set(Boost_USE_STATIC_LIBS ON) </code></pre> But make process of generated nmake makefile failed, with link error 2038: <pre><code>libboost_log-vc110-mt-1_54.lib(attribute_set.obj):-1: error: LNK2038: mismatch detected for 'RuntimeLibrary': value 'MD_DynamicRelease' doesn't match value 'MT_StaticRelease' in http_proxy_server.cpp.obj </code></pre> But if I compile boost with option <code>runtime-link=static</code>, means linking CRT statically, then I can successfully make my project. My question is: Could someone explain why my project failed to link with the CRT dynamically linked version of boost, but succeeded with the CRT statically linked version of boost, what's the difference? BTW: my project is dynamically linked to CRT with <code>/MD</code> option. <hr> Edit: Finally I figured out the reason, I mixed up <code>CMAKE_CXX_FLAGS_RELEASE</code> with <code>CMAKE_CXX_FLAGS</code>, the former has a <code>/MD</code> option, but the latter does not. In fact cmake will pass the latter to compiler, so my program is actually linked statically as the error output shows. Solution: run cmake with <code>-DCMAKE_BUILD_TYPE=Release</code> when generating makefile, this will add options of <code>CMAKE_CXX_FLAGS_RELEASE</code> into <code>CMAKE_CXX_FLAGS</code> automatically, then the program will be linked to CRT dynamically. Oh, a silly question.
Tags
<c++><boost><cmake><static-linking><dynamic-linking>
Title
Dynamic linking error with statically linked boost library
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1. USNathan Osman
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1. USKelvin Hu
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