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Subject: Add -lpthread when using Boost::Thread.
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Author: Philip Lowman <debian@carbon-project.org>
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Author: Modestas Vainius <modax@debian.org>
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Origin: other, http://public.kitware.com/Bug/file_download.php?file_id=3929&type=bug
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Last-Update: 2013-03-16
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Bug: http://cmake.org/Bug/view.php?id=10692
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Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=563479
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Forwarded: http://cmake.org/Bug/file_download.php?file_id=3629&type=bug
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--- a/Modules/FindBoost.cmake
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+++ b/Modules/FindBoost.cmake
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@@ -409,6 +409,22 @@ function(_Boost_GUESS_COMPILER_PREFIX _r
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set(${_ret} ${_boost_COMPILER} PARENT_SCOPE)
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endfunction()
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+function(_Boost_consider_adding_pthreads _outvar)
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+ # On Unix platforms (excluding cygwin) add pthreads to Boost_LIBRARIES
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+ # if the user is searching for the boost-thread component.
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+ if(UNIX AND NOT CYGWIN)
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+ list(FIND Boost_FIND_COMPONENTS thread _using_boost_thread)
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+ if(_using_boost_thread GREATER -1)
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+ find_library(BOOST_THREAD_LIBRARY NAMES pthread
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+ DOC "The threading library used by boost-thread"
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+ )
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+ if(BOOST_THREAD_LIBRARY)
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+ set(${_outvar} ${ARGN} ${BOOST_THREAD_LIBRARY} PARENT_SCOPE)
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+ endif()
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+ endif()
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+ endif()
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+endfunction()
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+
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#
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# End functions/macros
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#
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@@ -1091,6 +1107,9 @@ if(Boost_FOUND)
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list(APPEND Boost_LIBRARIES ${Boost_${UPPERCOMPONENT}_LIBRARY})
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endif()
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endforeach()
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+
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+ # Add pthread library on UNIX if thread component was found
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+ _Boost_consider_adding_pthreads(Boost_LIBRARIES ${Boost_LIBRARIES})
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else()
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if(Boost_FIND_REQUIRED)
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message(SEND_ERROR "Unable to find the requested Boost libraries.\n${Boost_ERROR_REASON}")
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