The following issue has been SUBMITTED.
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http://www.cmake.org/Bug/view.php?id=15478
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Reported By: Walter Gray
Assigned To:
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Project: CMake
Issue ID: 15478
Category: CMake
Reproducibility: always
Severity: minor
Priority: normal
Status: new
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Date Submitted: 2015-03-26 15:25 EDT
Last Modified: 2015-03-26 15:25 EDT
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Summary: As of CMake 3.1 Properties cannot be set to ""
Description:
As of CMake 3.0.2, it was completely legal to set a target property to "". This
was in fact a very helpful feature for me in some cases since it meant that if I
knew I'd set a property to a list (even an empty one), when I read it back later
and passed it into a foreach I didn't have to also use an if to check if it
existed. This functionality was broken in 3.1, and there is neither a policy
setting about it, nor any documentation I can find that indicates this was an
intended change.
Steps to Reproduce:
Run the following cmake script. In CMake <= 3.0.2, prop1 will be an empty
string. In CMake >= 3.1, it will be prop1-NOTFOUND
cmake_minimum_required(VERSION 3.0)
cmake_policy(VERSION 3.0.2)
project(cmaketestproject)
add_executable(testexe test.cpp)
set(emptylist "")
set_target_properties(testexe PROPERTIES INTERFACE_PROP_1 "${emptylist}"
INTERFACE_PROP_2 "thing")
get_target_property(prop1 testexe INTERFACE_PROP_1)
get_target_property(prop2 testexe INTERFACE_PROP_2)
get_target_property(prop3 testexe INTERFACE_PROP_3)
message(prop1=${prop1})
message(prop2=${prop2})
message(prop3=${prop3})
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Issue History
Date Modified Username Field Change
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2015-03-26 15:25 Walter Gray New Issue
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