[cmake-developers] [CMake 0014737]: $ENV{FOO} always evaluates to FALSE

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=14737 
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Reported By:                Alex Merry
Assigned To:                
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Project:                    CMake
Issue ID:                   14737
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2014-02-05 10:49 EST
Last Modified:              2014-02-05 10:49 EST
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Summary:                    $ENV{FOO} always evaluates to FALSE
Description: 
A script like
if($ENV{FOO})
  # do something
endif()
will never evaluate the statements in the if() branch, regardless of the value
of the environment variable FOO.

Steps to Reproduce: 
Store the attached testenv.cmake somewhere, then run
FOO="" cmake -P testenv.cmake
As expected, the output is
-- $ENV{FOO} = 
-- $ENV{FOO} evaluates to FALSE
-- ENV{FOO} evaluates to FALSE

Now try
FOO="bar" cmake -P testenv.cmake
The output is
-- $ENV{FOO} = bar
-- $ENV{FOO} evaluates to FALSE
-- ENV{FOO} evaluates to FALSE
when the expected output would be
-- $ENV{FOO} = bar
-- $ENV{FOO} evaluates to TRUE
-- ENV{FOO} evaluates to TRUE

Additional Information: 
Tested with cmake 2.8.12 and cmake 2.8.12.20140204-g5414b
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Issue History 
Date Modified    Username       Field                    Change               
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2014-02-05 10:49 Alex Merry     New Issue                                    
2014-02-05 10:49 Alex Merry     File Added: testenv.cmake                    
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