DLL file `api-ms-win-crt-runtime-l1-1-0.dll` not found!

[shreyarastogi]

shrey@LAPTOP-L08HN83K MINGW64 /c/Users/shrey/servo (master)
$ ./mach build --dev
warning: Error finalizing incremental compilation session directory \\?\C:\Users\shrey\servo\target\debug\incremental\canvas_traits-aj1987kq9sua\s-fkbu5d627i-159yjr0-working: Access is denied. (os error 5)

warning: method Constructor should have a snake case name
--> components\script\dom\doge.rs:34:8
|
34 | pub fn Constructor(global: &GlobalScope, init: Option) -> Fallible<DomRoot> {
| ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): constructor
|
= note: #[warn(non_snake_case)] on by default

Finished dev [unoptimized + debuginfo] target(s) in 9.22s

Packaging EGL DLLs
Packaging gstreamer DLLs
Packaging MSVC DLLs
DLL file api-ms-win-crt-runtime-l1-1-0.dll not found!
Build FAILED in 0:00:09

facing this error, took help from google but haven't been able to solve it.

[jdm]

MINGW isn't a supported environment. What happens if you open a regular windows terminal window and run mach build --dev?

[shreyarastogi]

It is building in a regular windows terminal window. I opened Command prompt in VS code itself and it is getting built there. So what do you suggest, I shouldn't build it using the bash terminal?

[jdm]

If the terminal is running bash, it's not a regular terminal window. Only the windows command prompt environment is supported; you can launch it by running "cmd" from the windows start menu search.

[Darkspirit]

I followed the steps from https://github.com/servo/servo#on-windows-msvc and got the same error.
(Chocolatery + Gstreamer 1.16.2 + without "troubleshooting" + had to uninstall LLVM-9.0.0-win64.exe because of mozjs_sys(?) failure)
Powershell: ./mach build -d, cmd: .\mach build -d

---

https://github.com/servo/servo#on-windows-msvc

If you got the error DLL file api-ms-win-crt-runtime-l1-1-0.dll not found! then set the WindowsSdkDir environment variable to an appropriate Windows Kit directory containing Redist\ucrt\DLLs\x64\api-ms-win-crt-runtime-l1-1-0.dll, for example C:\Program Files (x86)\Windows Kits\10.

$env:WindowsSdkDir="C:\Program Files (x86)\Windows Kits\10"; ./mach build -d
only worked after changing

servo/python/servo/build_commands.py

Lines 1006 to 1007 in 8f3622a

	if "WindowsSdkDir" in os.environ:
	redist_dirs += [path.join(os.environ["WindowsSdkDir"], "Redist", "ucrt", "DLLs", vs_platform)]

to

import glob
redist_dirs += glob.glob(path.join(os.environ["WindowsSdkDir"], "Redist", "*", "ucrt", "DLLs", vs_platform))

because the correct path is C:\Program Files (x86)\Windows Kits\10\Redist\10.0.17763.0\ucrt\DLLs\x64\api-ms-win-crt-runtime-l1-1-0.dll.

[jdm]

I worked around the problem by running mach build -d inside of a Visual Studio command prompts, rather than the stock Windows command prompt.