MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0014786CMakeCMakepublic2014-03-05 08:062016-06-10 14:31
ReporterPhilipp Möller 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
PlatformLinuxOSArch LinuxOS Version
Product VersionCMake 2.8.12.2 
Target VersionCMake 3.0Fixed in Version 
Summary0014786: Imported targets always require an IMPORTED_LOCATION
DescriptionWhen creating an imported target "importtarget" and not setting the IMPORTED_LOCATION property, targets linking against the imported target will have a dependency on importtarget-NOTFOUND, making it impossible to build.

A common use case is to manually create imported targets from the result of a find_package call for easy reference to the dependency in various places in the build system. Some libraries (like core Boost, Eigen) don't have any libraries.
Steps To ReproduceUse:

cmake_minimum_required(VERSION 2.8)
project(Foo)

add_executable(main main.cpp)

add_library(Header_only_lib IMPORTED)
set_target_properties(${lib} PROPERTIES
  INTERFACE_INCLUDE_DIRECTORIES "/usr/include/my_lib"
  )
target_link_libraries(main Header_only_lib)

cmake .
make main # boom
Additional InformationAFAIK this is going to be resolved with add_library(foo INTERFACE IMPORTED), but a work-around for earlier CMake versions would be much appreciated.
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Issue History
Date ModifiedUsernameFieldChange
2014-03-05 08:06Philipp MöllerNew Issue
2014-03-05 11:40Brad KingNote Added: 0035303
2014-03-05 11:40Brad KingStatusnew => acknowledged
2014-03-05 11:40Brad KingResolutionopen => fixed
2014-03-05 11:40Brad KingFixed in Version => CMake 3.0
2014-03-05 11:40Brad KingTarget Version => CMake 3.0
2016-06-10 14:29Kitware RobotNote Added: 0042497
2016-06-10 14:29Kitware RobotStatusacknowledged => resolved
2016-06-10 14:29Kitware RobotFixed in VersionCMake 3.0 =>
2016-06-10 14:29Kitware RobotResolutionfixed => moved
2016-06-10 14:29Kitware RobotAssigned To => Kitware Robot
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0035303)
Brad King   
2014-03-05 11:40   
Correct, the INTERFACE library type is introduced in CMake 3.0.0-rc1 which has now been released. I do not think there is a work-around for older versions. The requirement for IMPORTED_LOCATION was by-design for non-INTERFACE imported targets.
(0042497)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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