[cmake-developers] [CMake 0013160]: try_compile leaves temporary directories

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=13160 
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Reported By:                Andreas Roth
Assigned To:                
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Project:                    CMake
Issue ID:                   13160
Category:                   CMake
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
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Date Submitted:             2012-04-23 03:28 EDT
Last Modified:              2012-04-23 03:28 EDT
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Summary:                    try_compile leaves temporary directories
Description: 
I installed the version 2.8.8 of CMake and i noticed that each try_compile run
leaves a directory like build\CMakeFiles\CMakeTmp\cmTryCompileExec78340897.dir.

This behavior has been introduced to fix the issue described here:
http://public.kitware.com/Bug/view.php?id=12957

On a build machine i noticed that each CMake run gets slower and slower. After
deleting all directories in build\CMakeFiles\CMakeTmp the speed got back to
normal. I used the process monitor (from sysinternals) and saw that CMake
enumerates all items in the build\CMakeFiles\CMakeTmp quite often. I don't know
why, but i think that's the reason for the decreasing speed.


Steps to Reproduce: 
1. delete the CMakeCache.txt file if it exists
2. Run cmake -G "Visual Studio 9 2008" .
   with CMakeLists.txt:
   PROJECT(HelloWorld C CXX)
   this detects the compiler and leaves several directories in
CMakeFiles\CMakeTmp.
3. goto step 1
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Issue History 
Date Modified    Username       Field                    Change               
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2012-04-23 03:28 Andreas Roth   New Issue                                    
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