Following the instructions here on Ubuntu 16.04:

https://github.com/dlang/dlang.org/blob/master/CONTRIBUTING.md

I did the command

make -f posix.mak html

but it failed to successfully complete:
-----------------------------------------------
make[1]: Leaving directory '/home/user/dlang/dmd/src'
../dmd/generated//release//dmd -c -o- -Df/home/user/dlang/dlang.org/web/spec/spec.html macros.ddoc html.ddoc dlang.org.ddoc doc.ddoc .generated/2.078.0.ddoc  .generated/dblog_latest.ddoc .generated/twid_latest.ddoc spec/spec.ddoc spec/spec.dd
make: ../dmd/generated//release//dmd: Command not found
posix.mak:466: recipe for target '/home/user/dlang/dlang.org/web/spec/spec.html' failed
make: *** [/home/user/dlang/dlang.org/web/spec/spec.html] Error 127

On Thursday, 4 January 2018 at 01:50:47 UTC, Tony wrote:
> Following the instructions here on Ubuntu 16.04:
>
> https://github.com/dlang/dlang.org/blob/master/CONTRIBUTING.md
>
> I did the command
>
> make -f posix.mak html
>
> but it failed to successfully complete:
> -----------------------------------------------
> make[1]: Leaving directory '/home/user/dlang/dmd/src'
> ../dmd/generated//release//dmd -c -o- -Df/home/user/dlang/dlang.org/web/spec/spec.html macros.ddoc html.ddoc dlang.org.ddoc doc.ddoc .generated/2.078.0.ddoc  .generated/dblog_latest.ddoc .generated/twid_latest.ddoc spec/spec.ddoc spec/spec.dd
> make: ../dmd/generated//release//dmd: Command not found
> posix.mak:466: recipe for target '/home/user/dlang/dlang.org/web/spec/spec.html' failed
> make: *** [/home/user/dlang/dlang.org/web/spec/spec.html] Error 127

1) Did you clone the `dmd` repository yourself?
2) Is ../dmd existent?
Try nuking ../dmd and doing a fresh clone of ../dmd

It looks strange because normally the path should be ../dmd/generated/linux/release/64/dmd so it looks like the OS and MODEL detection doesn't work. That happens in dmd/src/osmodel.mak

On Thursday, 4 January 2018 at 02:20:32 UTC, Seb wrote:
> On Thursday, 4 January 2018 at 01:50:47 UTC, Tony wrote:
>> Following the instructions here on Ubuntu 16.04:
>>
>> https://github.com/dlang/dlang.org/blob/master/CONTRIBUTING.md
>>
>> I did the command
>>
>> make -f posix.mak html
>>
>> but it failed to successfully complete:
>> -----------------------------------------------
>> make[1]: Leaving directory '/home/user/dlang/dmd/src'
>> ../dmd/generated//release//dmd -c -o- -Df/home/user/dlang/dlang.org/web/spec/spec.html macros.ddoc html.ddoc dlang.org.ddoc doc.ddoc .generated/2.078.0.ddoc  .generated/dblog_latest.ddoc .generated/twid_latest.ddoc spec/spec.ddoc spec/spec.dd
>> make: ../dmd/generated//release//dmd: Command not found
>> posix.mak:466: recipe for target '/home/user/dlang/dlang.org/web/spec/spec.html' failed
>> make: *** [/home/user/dlang/dlang.org/web/spec/spec.html] Error 127
>
> 1) Did you clone the `dmd` repository yourself?
yes

> 2) Is ../dmd existent?
> Try nuking ../dmd and doing a fresh clone of ../dmd
>
I forgot to  check, but I deleted the dlang.org directory and tried again starting from git clone and this time it appears to have worked. Guess I should have tried that first before posting.