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CMake finds Boost but the imported targets not available for Boost version

I use CMake to find Boost. Boost is found, but CMake errors out with

Imported targets not available for Boost version

See the complete error (from macOS) below. What am I doing wrong?

CMake Warning at /Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
  Imported targets not available for Boost version 106300
Call Stack (most recent call first):
  /Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
/Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
CMakeLists.txt:6 (find_package)

Boost version: 1.63.0
Found the following Boost libraries:
  thread
CMake Warning at /Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:743 (message):
  Imported targets not available for Boost version 106300
Call Stack (most recent call first):
  /Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:842 (_Boost_COMPONENT_DEPENDENCIES)
  /Applications/CMake.app/Contents/share/cmake-3.6/Modules/FindBoost.cmake:1395 (_Boost_MISSING_DEPENDENCIES)
  CMakeLists.txt:7 (find_package)
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1 Answer

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by (71.8m points)

Your CMake version is too old. Update CMake and it will work.

CMake cannot detect the dependencies between the different Boost libraries. They have explicitly implemented in FindBoost.
For every Boost release this information is added by the CMake maintainers and it gets part of the next CMake release. So you have to make sure, that your CMake version was released after the Boost version you try to find.

Boost 1.63 requires CMake 3.7 or newer.
Boost 1.64 requires CMake 3.8 or newer.
Boost 1.65 and 1.65.1 require CMake 3.9.3 or newer.
Boost 1.66 requires CMake 3.11 or newer.
Boost 1.67 requires CMake 3.12 or newer.
Boost 1.68, 1.69 require CMake 3.13 or newer.
Boost 1.70 requires CMake 3.14 or newer.
Boost 1.71 requires CMake 3.15.3 or newer.
Boost 1.72 requires CMake 3.16.2 or newer.
Boost 1.73 requires CMake 3.17.2 or newer.
Boost 1.74 requires CMake 3.19 or newer.
Boost 1.75 requires CMake 3.19.5 or newer.
Boost 1.76 requires CMake 3.20.3 or newer.
Boost 1.77 requires CMake 3.21.3 or newer.

Without FindBoost

Starting with version 1.77, Boost provides a BoostConfig.cmake that obsoletes FindBoost and the required changes. Using

find_package(Boost CONFIG)

does exclude the FindBoost file and searches only for the config file.
For compatibility CMake will remain providing FindBoost.


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