[cmake-developers] [CMake 0016016]: FindBoost.cmake has no support for OPTIONAL_COMPONENTS

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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https://public.kitware.com/Bug/view.php?id=16016 
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Reported By:                Mario Lang
Assigned To:                
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Project:                    CMake
Issue ID:                   16016
Category:                   Modules
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2016-03-13 12:10 EDT
Last Modified:              2016-03-13 12:10 EDT
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Summary:                    FindBoost.cmake has no support for
OPTIONAL_COMPONENTS
Description: 
FindBoot.cmake has no support for the OPTIONAL_COMPONENTS keyword of
find_package().
If REQUIRED is passed, Boost_FOUND will be false if one of the
OPTIONAL_COMPONENTS was not found.
This seems easy to fix, the change boils down to
-    if(NOT Boost_${COMPONENT}_FOUND)
+    if(NOT Boost_${COMPONENT}_FOUND AND Boost_FIND_REQUIRED_${component})
which seems simple enough.
Please consider the attached patch.
This is a long standing issue, at least a discussion from 2010 can be found
here:
https://cmake.org/pipermail/cmake/2010-August/039042.html


Steps to Reproduce: 
find_package(Boost REQUIRED COMPONENTS filesystem OPTIONAL_COMPONENTS
not_published_yet)
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Issue History 
Date Modified    Username       Field                    Change               
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2016-03-13 12:10 Mario Lang     New Issue                                    
2016-03-13 12:10 Mario Lang     File Added: FindBoost.patch                    
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