Re: Do we still need MSDOS support?

[Petr M. <mi...@ph...>]

I build gnuplot on OS/2 via gcc/emx. The binary then runs on OS/2, 
eCommStation, DOS with emx.exe or rsx.exe. Thus it is necessary to keep 
__OS2__ and __EMX__.

The gcc/emx I use is gcc 2.8.1, and it does not know command line option 
"-std=c99".

I've prepared some patches for OS/2 in 2017 but not committed them due to the 
transfer of cvs to git. I'll have to learn how to submit them.

BTW, would not C99 syntax break VMS/VAX compilers? Its makefile is still 
in the config/ directory.

Petr


>> EMX:  Used on DOS and OS/2, so removing support for it might break
>>    OS/2, too (Petr?)
>
> Petr:
>
> Are you still building gnuplot on OS/2?
> What toolset[s] are needed for that?
>
> In particular I am wondering if the __EMX__ conditional code and the
> emxvga.trm driver can be removed.
>
> The EMX project web page seems to show that the most recent
> supported gcc is 3.0.4 (from 2002).  I suspect that if we move to
> requiring a compiler that accepts C99 syntax that version is too old.