[cmake-developers] [CMake 0015454]: Ninja generator should not generate phony commands with cyclic dependency

Mantis Bug Tracker mantis at public.kitware.com
Tue Mar 17 20:19:39 EDT 2015


The following issue has been SUBMITTED. 
====================================================================== 
http://www.cmake.org/Bug/view.php?id=15454 
====================================================================== 
Reported By:                Daniel Dunbar
Assigned To:                
====================================================================== 
Project:                    CMake
Issue ID:                   15454
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
====================================================================== 
Date Submitted:             2015-03-17 20:19 EDT
Last Modified:              2015-03-17 20:19 EDT
====================================================================== 
Summary:                    Ninja generator should not generate phony commands
with cyclic dependency
Description: 
The Ninja generator frequently will generate commands of the form:
--
build testCCompiler.c: phony testCCompiler.c
--
(taken from the build.ninja generated for the initial "-- Check for working C
compiler using: Ninja" step).

This command specifies a cyclic dependency, even though Ninja itself does not
generally error on it:
  https://github.com/martine/ninja/issues/935


Steps to Reproduce: 
Here is a self contained example:
--
$ cat CMakeLists.txt 
cmake_minimum_required(VERSION 3.0)
add_custom_command(OUTPUT foo.tmp DEPENDS foo.c COMMAND true)
add_custom_target(foo DEPENDS foo.tmp)
$ cmake -GNinja .
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/foo
$ grep "foo.c:" build.ninja
build foo.c: phony foo.c
--

====================================================================== 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2015-03-17 20:19 Daniel Dunbar  New Issue                                    
======================================================================



More information about the cmake-developers mailing list