[CMake] Ninja on windows ( latest ninja from git, cmake 2.8.9 )

[Peter Kuemmel]

It's merged now.

> It's a ninja bug. I hope this ninja patch
> 
>   https://github.com/martine/ninja/pull/401
> 
> is the right solution.
> 
> Peter
> 
> 
> -------- Original-Nachricht --------
> > Datum: Wed, 15 Aug 2012 20:59:26 +0000
> > Von: "Malfettone, Kris" <Kris.Malfettone at sig.com>
> > An: Bill Hoffman <bill.hoffman at kitware.com>, "cmake at cmake.org"
> <cmake at cmake.org>
> > Betreff: Re: [CMake] Ninja on windows ( latest ninja from git, cmake
> 2.8.9 )
> 
> > Sure although you will need to map a network drive to properly recreate
> > it.
> > 
> > In a project have:
> > CMakeLists.txt
> > cmake_minimum_required(VERSION 2.8)
> > project(foo)
> > #include_directories("H:\\test")
> > include_directories("\\\\machine\\share\\test")
> > add_executable(foo main.cpp)
> > 
> > main.cpp
> > #include "inc.h"
> > 
> > int main( int, char ** )
> > {
> >    return code(1);
> > }
> > 
> > 
> > Then on shared network folder "test" that contains:
> > inc.h
> > inline int code( int i ) { return i+1; }
> > 
> > 
> > 
> > 
> > To reproduce first build the project foo by trying to use the include
> > directory as: "\\\\machine\\share\\test"
> > Everything will work but it will always rebuild the project thinking
> inc.h
> > is "dirty".
> > 
> > Then map a drive to "\\\\machine\\share" and change the include
> directory
> > to your newly mapped drive, ex. "H:\\test"
> > Then ninja will correctly determine that your project has nothing to do.
> > 
> > 
> > I know that it is probably a pain to setup this test, thank you for
> taking
> > the time to do it.
> > 
> > -Kris
> > 
> > 
> > 
> > 
> > 
> > 
> > -----Original Message-----
> > From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
> > Of Bill Hoffman
> > Sent: Wednesday, August 15, 2012 4:36 PM
> > To: cmake at cmake.org
> > Subject: Re: [CMake] Ninja on windows ( latest ninja from git, cmake
> 2.8.9
> > )
> > 
> > On 8/15/2012 2:48 PM, Malfettone, Kris wrote:
> > > So I think I found the issue. When the include directories are
> > specified via the network path ( \\machine\dir\ ) vs. a drive letter (
> > N:\dir ) ninja always thinks they are out of date. This is a pretty big
> hurdle
> > for us since our toolchain files can be mapped to different drives for
> > different users so our builds reference the network paths.
> > >
> > > This seems like a bug in ninja, but it could also be a problem with
> > the Windows APIs used to get the information. Any thoughts?
> > 
> > 
> > If you could create a really small example of this and then send the
> > binary tree to me that would be helpful.  It might be cmake might be
> ninja...
> > 
> > -Bill
> > 
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