[cmake-developers] [CMake 0015333]: Behaviour change with 3.1 - target properies set to empty string returned as -NOTFOUND
The following issue has been SUBMITTED.
==
http://public.kitware.com/Bug/view.php?id=15333
==
Reported By:arlbranch
Assigned To:
==
Project:CMake
Issue ID: 15333
Category: CMake
Reproducibility:always
Severity: major
Priority: normal
Status: new
==
Date Submitted: 2015-01-02 18:39 EST
Last Modified: 2015-01-02 18:39 EST
==
Summary:Behaviour change with 3.1 - target properies set to
empty string returned as -NOTFOUND
Description:
Under the old behaviour, when a target property was set to "",
get_target_property would give "". In version 3.1 it now gives prop-NOTFOUND.
Needless to say, this change breaks build systems that relied on the old
behaviour.
Steps to Reproduce:
CMakeLists.txt
---
cmake_minimum_required(VERSION 2.8.0)
add_custom_target(tgt)
set_target_properties(tgt PROPERTIES emptyprop "")
get_target_property(val tgt emptyprop)
message("val = ${val}")
---
Old Behaviour
---
[branch@viter on /dev/pts/9] 1044 ~/tmp/cm31bug/build
$ cmake --version
cmake version 2.8.12.2
[branch@viter on /dev/pts/9] 1045 ~/tmp/cm31bug/build
$ cmake ..
val =
-- Configuring done
-- Generating done
-- Build files have been written to: /local/home/branch/tmp/cm31bug/build
New Behaviour
$ cmake --version
cmake version 3.1.0
CMake suite maintained and supported by Kitware (kitware.com/cmake).
[branch@fortuna on /dev/pts/5] 1054 ~/tmp/cm31bug/fbuild
$ cmake ..
val = val-NOTFOUND
-- Configuring done
-- Generating done
-- Build files have been written to: /home/branch/tmp/cm31bug/fbuild
==
Issue History
Date ModifiedUsername FieldChange
==
2015-01-02 18:39 arlbranch New Issue
==
--
Powered by www.kitware.com
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Kitware offers various services to support the CMake community. For more
information on each offering, please visit:
CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake-developers
Re: [cmake-developers] Extracting target metadata, IDE integration
On Tuesday, December 23, 2014 01:30:58 Aleix Pol wrote: > On Thu, Sep 25, 2014 at 9:14 AM, Anton Makeev ... > > * No progress indication. Since the generation may take several minutes, > > > > providing feedback is crucial. > > I never found such case, I would argue that a project which has a > cmake script that takes several minutes is broken, but maybe we can > open a thread to discuss it? On network file systems things can get slow... (even if the file system feels really fast in general usage, i.e. has high data throuhgput). ... > > * Not sure if it’s possible at all - a lightweight phase where CMake only > > > > collects necessary information (list of files/targets, compiler > > settings). > > This will help IDE react to the changes much faster. > > That would be extra-cool, agreed. Maybe it's an iteration we can > consider in the future. Yes, this would be cool, but until now whenever I thought about this my conclusion was that this is unfortunately not possible, since the targets/files/etc. can depend on anything, if() clauses, execution of commands, results of find_package(), etc. Alex -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake-developers
