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Date:	Thu, 17 Aug 2017 12:49:41 -0700 (PDT)
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Subject:	Re: cc1plus.exe: out of memory ...
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Hi,

On Thursday, August 17, 2017 at 11:17:17 AM UTC-5, Gregg wrote:
>
> Sorry if this is a repeat, but my searching is not yielding answer.
> 
> A very simple program compiles fine on Win7 using DJGPP GCC 4.73
> but not 7.2 (downloaded today using the zip picker).

Haven't you already edited the registry to increase the DPMI limit?

"
Add registry entry 'DpmiLimit' with large enough value to
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW
"

> Compile command from DOS prompt: gpp supersimple.cpp
> 
> Error message when compiling with 7.2:
> cc1plus.exe: out of memory allocating 2101247 bytes after a total
> of 54213688 bytes

I haven't checked in recent years, and this is barking up the
wrong tree, but for some minimal relief (probably not under
Win7, though!), you can use something like this:

--param ggc-min-expand=10 --param ggc-min-heapsize=4096
-Wa,--reduce-memory-overheads -Wl,--reduce-memory-overheads
 
> If the #include statement is commented out, the code compiles
> without error for both versions.

I doubt that's your problem. But instead you can use a Windows-native
cross-compiler (currently only 7.1.0):

https://github.com/andrewwutw/build-djgpp/releases

> Based on internet suggestions, the following have been tried
> without success.

DJGPP still works under NTVDM (barely), but NTVDM isn't exactly
well-supported anymore. Honestly, I don't even have any NTVDMs
anymore, rarely boot DOSEMU, often boot native FreeDOS.

> Assure file is saved as UTF-8

I don't think DJGPP builds support widechars. Pure ASCII is better!

> -save-temps or -ftrack-macro-expansion=0

No idea.

> unzip32 to prevent long file names

Uh, I think that will use LFNs if available (which is good!).

> What to do?

You could use FreeDOS under VM:

1). http://wiki.freedos.org/install/
2). https://www.lazybrowndog.net/freedos/virtualbox/

Or use a bootable USB:

3). http://rufus.akeo.ie/

> Thanks for any help.

DJGPP is still awesome.

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