[cmake-developers] [CMake 0016098]: CMake fails to read its own cache after writing a variable with a carriage return.

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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https://public.kitware.com/Bug/view.php?id=16098 
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Reported By:                tibur
Assigned To:                
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Project:                    CMake
Issue ID:                   16098
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2016-05-10 10:41 EDT
Last Modified:              2016-05-10 10:41 EDT
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Summary:                    CMake fails to read its own cache after writing a
variable with a carriage return.
Description: 
I let cmake read a version number from a file, and then store a variable made
from this version number string.

{{{
cmake_minimum_required(VERSION 2.8.9)

file(READ "version.txt" API_VERSION)
string(REPLACE "." ";" API_VERSION_LIST ${API_VERSION})
list(GET API_VERSION_LIST 0 API_VERSION_MAJOR)
list(GET API_VERSION_LIST 1 API_VERSION_MINOR)
list(GET API_VERSION_LIST 2 API_VERSION_PATCH)

#string(STRIP ${API_VERSION_PATCH} API_VERSION_PATCH)

set(TEST "${API_VERSION_PATCH}_TEST" CACHE STRING "Offending entry")
}}}

If the version.txt file contains a newline at the end, then the corresponding
variable is broken within cmake cache. CMake then complains:

CMake Error: Parse error in cache file [...]/cmake_bug/build/CMakeCache.txt.
Offending entry: _TEST

If we look at CMakeCache.txt we can see the following lines:

TEST:STRING=4
_TEST

Steps to Reproduce: 
Get both files.
Use cmake first to create the build directory, then a second time on that build
folder.

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Issue History 
Date Modified    Username       Field                    Change               
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2016-05-10 10:41 tibur          New Issue                                    
2016-05-10 10:41 tibur          File Added: version.txt                      
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