Fix build on Hurd.

[Dariqq]

What does this PR do?

Fixes a build failure when building for Hurd systems.

I tried to crossbuild for a gnu hurd system and found this error in os_getpass.c

../../src/host/os_getpass.c:42:18: error: #error Not implemented yet for this platform

How does this PR change Premake's behavior?
N/A

Are there any breaking changes? Will any existing behavior change?

No

Anything else we should know?

Are there any rules for the order in PLATFORM_POSIX, i put it before PLATFORM_COSMO to join the group of the other OSes as

Did you check all the boxes?

• Focus on a single fix or feature; remove any unrelated formatting or code changes
• Add unit tests showing fix or feature works; all tests pass
• Mention any related issues (put closes #XXXX in comment to auto-close issue when PR is merged)
• Follow our coding conventions
• Minimize the number of commits
• Align documentation to your changes

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[nickclark2016]

This should probably be added to the system API as well (and the docs).

[Dariqq]

Hi,

I think this is already there? There are some system:hurd filters in this premake5.lua and hurd is an accepted value for --os. Or are you talking about something different?

[nickclark2016]

I am talking specifically about adding it to the system API, as well as the corresponding documentation.

[Dariqq]

I apologise but I dont quite understand what you mean by that.

The option should be already there https://github.com/premake/premake-core/blob/master/src/_premake_init.lua#L1595

This was originally added in cf9fb33

It is missing from the documentation but the list at https://premake.github.io/docs/system seems a bit out of date with the accepted options in that file in general.

Am I missing something or is there more to it?

[Dariqq]

On another note should all the | be actually || in os_getnumcpus.c

[nickclark2016]

I apologise but I dont quite understand what you mean by that.

The option should be already there https://github.com/premake/premake-core/blob/master/src/_premake_init.lua#L1595

This was originally added in cf9fb33

It is missing from the documentation but the list at https://premake.github.io/docs/system seems a bit out of date with the accepted options in that file in general.

Am I missing something or is there more to it?

Here is where you can register it as a system and the corresponding docs:

premake-core/src/_premake_init.lua

Line 857 in 5353206

api.register {

https://github.com/premake/premake-core/blob/master/website/docs/system.md