MantisBT - CMake
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IDProjectCategoryView StatusDate SubmittedLast Update
0015602CMakeCMakepublic2015-06-03 12:012016-06-10 14:31
Reporterarlbranch 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityalways
StatusclosedResolutionmoved 
Platformx86_64OSLinuxOS Version4.0.4-2-ARCH
Product VersionCMake 3.2.3 
Target VersionFixed in Version 
Summary0015602: Multiple configure_file calls with same input file cause Ninja to output spurious warning
DescriptionMultiple calls to configure_file with the same input file but from different CMakeLists.txt files causes ninja to output the following:
warning: multiple rules generate .... builds involving this target will not be correct; continuing anyway

Complete Example:
=================
[branch@fortuna on /dev/pts/2] 611 ~/tmp/cftest
$ cmake --version
cmake version 3.2.3

CMake suite maintained and supported by Kitware (kitware.com/cmake).
[branch@fortuna on /dev/pts/2] 612 ~/tmp/cftest
$ ls -R
.:
cftest.json CMakeLists.txt sub/

./sub:
CMakeLists.txt
[branch@fortuna on /dev/pts/2] 613 ~/tmp/cftest
$ cat CMakeLists.txt
cmake_minimum_required(VERSION 3.2)
project(cftest)

configure_file(cftest.json cftest1.json COPYONLY)
add_subdirectory(sub)

[branch@fortuna on /dev/pts/2] 614 ~/tmp/cftest
$ cat sub/CMakeLists.txt
configure_file(../cftest.json cftest2.json COPYONLY)

[branch@fortuna on /dev/pts/2] 615 ~/tmp/cftest
$ mkdir ../cfbuild && cd ../cfbuild
[branch@fortuna on /dev/pts/2] 616 ~/tmp/cfbuild
$ cmake -G Ninja ../cftest
-- The C compiler identification is GNU 5.1.0
-- The CXX compiler identification is GNU 5.1.0
-- Check for working C compiler using: Ninja
-- Check for working C compiler using: Ninja -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler using: Ninja
-- Check for working CXX compiler using: Ninja -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/branch/tmp/cfbuild
[branch@fortuna on /dev/pts/2] 617 ~/tmp/cfbuild
$ ninja
ninja: warning: multiple rules generate /home/branch/tmp/cftest/cftest.json. builds involving this target will not be correct; continuing anyway
ninja: no work to do.
Steps To Reproduce1) Create the project in the Description
2) Configure with the Ninja generator
3) build with ninja
Additional Information
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Issue History
Date ModifiedUsernameFieldChange
2015-06-03 12:01arlbranchNew Issue
2016-06-10 14:29Kitware RobotNote Added: 0042790
2016-06-10 14:29Kitware RobotStatusnew => resolved
2016-06-10 14:29Kitware RobotResolutionopen => moved
2016-06-10 14:29Kitware RobotAssigned To => Kitware Robot
2016-06-10 14:31Kitware RobotStatusresolved => closed

Notes
(0042790)
Kitware Robot   
2016-06-10 14:29   
Resolving issue as `moved`.

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