[cmake-developers] [CMake 0011343]: A built-in facility to disallow in-source builds would be a useful feature

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=11343 
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Reported By:                kentwilliams
Assigned To:                
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Project:                    CMake
Issue ID:                   11343
Category:                   CMake
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     new
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Date Submitted:             2010-10-20 15:35 EDT
Last Modified:              2010-10-20 15:35 EDT
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Summary:                    A built-in facility to disallow in-source builds
would be a useful feature
Description: 
It is possible (and it is done on multiple projects) to disallow
configuring a source tree as a build directory.  The only problem is that
testing for CMAKE_CURRENT_SOURCE_DIR != CMAKE_CURRENT_BINARY_DIR doesn't
happen before CMake creates the CMakeCache.txt file and CMakeFiles
directory.

This is a problem because if CMake detects its own config/build files in a
source directory, it will act as though it has configured an out-of-source
build directory, but a build in the out-of-source directory will fail.

What's needed is a 'magic' option to disallow out of source builds, that
will get checked before creating any files in the source directory.
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Issue History 
Date Modified    Username       Field                    Change               
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2010-10-20 15:35 kentwilliams   New Issue                                    
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