HTOD

[Walter Bright via Digitalmars-d]

On 8/22/2017 8:14 AM, Jonathan Shamir wrote:
> https://dlang.org/htod.html
> 
> I click download and get an exe!
> 
> And in the bugs section:
> No linux version.
> 
> I'll start with the productive part. If anyone can point me out to the sources 
> of htod I would love to compile for linux + osx. Any task seems more attractive 
> to me than manually converting a 1000 line header to D.

You're right about htod, and it's on me. It's built out of the DMC++ front end. 
I haven't gotten around yet to releasing it as open source.

The second problem is the DMC++ front end is tuned to deal with Windows compiler 
extensions, not Linux compiler extensions. So compiling it and running it on 
Linux will fail because every non-trivial C header file writer is unable to 
resist using every extension.

There's also the gcc problem with its reliance on many hundreds (!) of 
predefined macros that are turned on/off by various gcc compiler switches. It's 
a madhouse. And, of course, every gcc on every platform has a different set of 
these. The situation was so bad that when I developed Warp (a fast C 
preprocessor) I left the predefined list up to the user to load from a special file.

gcc on Ubuntu has 240 predefined macros when using the default switches. Who 
knows what the full list actually is.

     gcc -dM -E - </dev/null

will print the list.

https://stackoverflow.com/questions/2224334/gcc-dump-preprocessor-defines