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

[Malfettone, Kris]

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specified via the network path ( \\machine\dir\ ) vs. a drive letter ( N:\dir ) ninja always thinks they are out of date.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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