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IDProjectCategoryView StatusDate SubmittedLast Update
0014986CMakeModulespublic2014-06-23 10:542016-06-10 14:31
Reportermband 
Assigned ToKitware Robot 
PrioritynormalSeveritymajorReproducibilityalways
StatusclosedResolutionmoved 
Platformx86_64OSUbuntuOS Version14.04
Product VersionCMake 3.0 
Target VersionFixed in Version 
Summary0014986: FindBoost with component thread does not properly link with boost_system
DescriptionWhen just finding the thread component of Boost it appears that one also has to link with boost_system. From the Boost documentation it looks like this change was introduced with version 1.52 (see http://www.boost.org/doc/libs/1_52_0/doc/html/thread/build.html [^]).
Steps To ReproduceFIND_PACKAGE(Boost COMPONENTS thread)
target_link_libraries(my_target ${Boost_LIBRARIES})

Resulting in a linker error like the following:
/usr/bin/ld: CMakeFiles/<something>.dir/<something>.o: undefined reference to symbol '_ZN5boost6system15system_categoryEv'
//usr/lib/x86_64-linux-gnu/libboost_system.so.1.54.0: error adding symbols: DSO missing from command line

Linking with boost_system (i.e. -lboost_system or target_link_libraries(my_target boost_system)) solves the issue, but it should be done automatically when finding the thread component of Boost.
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Issue History
Date ModifiedUsernameFieldChange
2014-06-23 10:54mbandNew Issue
2014-06-23 11:28Brad KingNote Added: 0036234
2014-06-23 11:28Brad KingStatusnew => backlog
2014-06-23 11:28Brad KingProduct VersionCMake 2.8.12.2 => CMake 3.0
2016-06-10 14:29Kitware RobotNote Added: 0042570
2016-06-10 14:29Kitware RobotStatusbacklog => resolved
2016-06-10 14:29Kitware RobotResolutionopen => moved
2016-06-10 14:29Kitware RobotAssigned To => Kitware Robot
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0036234)
Brad King   
2014-06-23 11:28   
AFAICT, FindBoost does not encode any of the Boost library dependencies nor does the documentation claim so.
(0042570)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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