Master build broken on Windows with ninja

[KindDragon]

Tag v2017.05.08.00 was fine, but master is broken

c1xx: fatal error C1083: Cannot open source file: '4987 -ID:\Work\vcpkg\buildtrees\folly\src\head\folly-master -I. -ID:\Work\vcpkg\installed\x64-windows\include -ID:\Work\vcpkg\installed\x64-windows\Include /DWIN32 /D_WINDOWS /W3 /utf-8 /GR /EHsc /MP /MD /O2 /Oi /Gy /DNDEBUG /Zi   /EHa /Zc:referenceBinding /Zc:rvalueCast /Zc:implicitNoexcept /Zc:strictStrings /Zc:threadSafeInit /Zc:throwingNew /std:c++latest /permissive- /bigobj /favor:blend /Zc:inline /Wall /MP /GF /Gw /Gy /Qpar /Oi /Ot /wd4191 /wd4291 /wd4309 /wd4310 /wd4366 /wd4587 /wd4592 /wd4723 /wd4724 /wd4868 /wd4996 /wd4068 /wd4091 /wd4146 /wd4800 /wd4018 /wd4365 /wd4388 /wd4389 /wd4100 /wd4459 /wd4505 /wd4701 /wd4702 /wd4061 /wd4127 /wd4200 /wd4201 /wd4296 /wd4316 /wd4324 /wd4355 /wd4371 /wd4435 /wd4514 /wd4548 /wd4574 /wd4582 /wd4583 /wd4619 /wd4623 /wd4625 /wd4626 /wd4647 /wd4668 /wd4706 /wd4710 /wd4711 /wd4714 /wd4820 /wd5026 /wd5027 /wd5031 /we4099 /we4129 /we4566 /showIncludes /FoCMakeFiles\folly_base.dir\folly\Demangle.cpp.obj /FdCMakeFiles\folly_base.dir\folly_base.pdb /FS -c D:\Work\vcpkg\buildtrees\folly\src\head\folly-master\folly\Demangle.cpp': No such file or directory

[KindDragon]

It happened between v2017.05.15.00 and v2017.05.22.00
/cc @Orvid

[Orvid]

Looking. I generally only test with the Visual Studio backend, so it's perfectly possible I broke other things in the process.

[KindDragon]

I just prefer Ninja because it's usually much faster. It would be great if it start working again

[Orvid]

So, it appears to be hitting a bug in the CMake Ninja generator that was causing it to generate an escape character in a place it shouldn't have been.

[KindDragon]

Could you please create an issue about this? https://gitlab.kitware.com/cmake/cmake/issues

[Orvid]

I need to put together a better-isolated use-case, but yes, I planned to open an issue upstream for it.

[KindDragon]

Thank you

[Milerius]

Issue still occur we should reopen

[Orvid]

Please file a new issue with details if this is happening again.

[chaiken]

Observed on Unix with master branch at c7166a6. I'll try filing a new issue.

[chenrui333]

it failed with osx build for the last two releases as well, #1507