Latest commit https://github.com/esp8266/Arduino/pull/7060 prevent compilation under windows with arduino IDE

[luc-github]

• [x ] This issue complies with the issue POLICY doc.
• [x ] I have read the documentation at readthedocs and the issue is not addressed there.
• [ x] I have tested that the issue is present in current master branch (aka latest git).
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Platform

• Hardware: ESP-12|
• Core Version: latest git hash or date]PoC cache configuration control #7060
• Development Env: Arduino IDE
• Operating System: Windows

Settings in IDE

• Module: Nodemcu
• Flash Mode: dio
• Flash Size: 4MB
• lwip Variant: v2 Lower Memory
• Reset Method: nodemcu
• Flash Frequency: 40Mhz
• CPU Frequency: 160MHz
• Upload Using: NA
• Upload Speed: NA

Problem Description

#7060 prevent compilation as it use mkdir.exe and cp.exe which do not exist under windows: mkdir is part of Microsoft shell not and exe and cp is unix tool not present on windows

when linking the compilation failed with following error message

exec: "mkdir": executable file not found in %PATH%

if mkdir is workrounded the a new message pop up

exec: "cp": executable file not found in %PATH%

Workaround 1:
revert #7060 allows compillation

Workaround 2:
add mkdir.exe and cp.exe from coreutils (http://gnuwin32.sourceforge.net/packages/coreutils.htm) allows compillation

[earlephilhower]

@mhightower83, it should be a simple fix for this. Use the same form of cmd /c wrappers used elsewhere in the platform.txt calls and it should resolve w/o much grief.

[luc-github]

additonnaly is that normal the build pass in travis/ci where there is a window image used?
is the ci reliable ?

[earlephilhower]

Yeah, the Windows CI is behaving as expected. Unfortunately, to run the CI GH needs certain tools installed. I think they have almost a full mingw running (to allow their scripting/control/etc.).

[luc-github]

I close issue as fixed - thank you