Wrong CWD while executing build_windows_jni.sh

[snnn]

Please provide the following information. The more we know about your system and use case, the more easily and likely we can help.

Description of the problem / feature request / question:

Building Bazel from scratch failed.

If possible, provide a minimal example to reproduce the problem:

set PATH=C:\msys64\usr\bin;C:\jdk\bin;C:\python35;C:\python35\scripts;%PATH%
set BAZEL_SH=C:/msys64/usr/bin/bash.exe
set JAVA_HOME=C:\jdk
set BAZEL_PYTHON=C:/python35/python.exe
set BAZEL_VS=C:/Program Files (x86)/Microsoft Visual Studio/2017/Enterprise
set JAVA_HOME=C:\jdk
bash compile.sh

Environment info

• Operating System:
  Windows 10

• Bazel version (output of bazel info release):
  0.6.1

Have you found anything relevant by searching the web?

None

Anything else, information or logs or outputs that would be helpful?

Build log:

Building Bazel from scratch......**********************************************************************
** Visual Studio 2017 Developer Command Prompt v15.4.0
** Copyright (c) 2017 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x64'
Microsoft (R) C/C++ Optimizing Compiler Version 19.11.25547 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

file-jni.cc
D:\os\bazel-0.6.1-dist\src\main\native\windows\file-jni.cc(25): fatal error C1083: Cannot open include file: 'src/main/native/windows/file.h': No such file or directory
file.cc
D:\os\bazel-0.6.1-dist\src\main\native\windows\file.cc(21): fatal error C1083: Cannot open include file: 'src/main/native/windows/file.h': No such file or directory
jni-util.cc
D:\os\bazel-0.6.1-dist\src\main\native\windows\jni-util.cc(20): fatal error C1083: Cannot open include file: 'src/main/native/windows/jni-util.h': No such file or directory
processes-jni.cc
D:\os\bazel-0.6.1-dist\src\main\native\windows\processes-jni.cc(26): fatal error C1083: Cannot open include file: 'src/main/native/windows/jni-util.h': No such file or directory
util.cc
D:\os\bazel-0.6.1-dist\src\main\native\windows\util.cc(24): fatal error C1083: Cannot open include file: 'src/main/native/windows/util.h': No such file or directory
Generating Code...

The content of generated "windows_jni.bat" is something like:

@echo OFF
@call "C:/Program Files (x86)/Microsoft Visual Studio/2017/Enterprise/VC/Auxiliary/Build/VCVARSALL.BAT" amd64
@cd D:\os\bazel-0.6.1-dist
@set TMP=D:\aaa
@CL /O2 /EHsc /LD /Fe

However, after invoking "VCVARSALL.BAT", current working directory would be under C:\xxxx, so "cd D:\xxxxx" doesn't take effect immediately. you need to call "D:" after that.

[buchgr]

@meteorcloudy @laszlocsomor can you take a look please?

[laszlocsomor]

Looks like a duplicate of #3863, which was fixed by e79a110.

[laszlocsomor]

Oh wait, no this is different.

[laszlocsomor]

Oh dear, this behavior of cmd.exe is new to me. Thanks for reporting and figuring it out, @snnn !
Let me fix it.