Horrible DMD startup performance on Windows

[Andrei Alexandrescu via Digitalmars-d]

On 5/31/16 2:34 PM, Bruno Medeiros wrote:
> On 31/05/2016 19:21, Martin Krejcirik wrote:
>> On Tuesday, 31 May 2016 at 18:13:05 UTC, Bruno Medeiros wrote:
>>> performance on Windows has become horrible. Takes over 3 seconds on my
>>> machine just to display the version.
>>
>> Doesn't happen to me. I doubt the problem is in dmd itself. Maybe deep
>> path search, antivirus, or something like that ?
>
> Hum, I didn't suspect anti-virus because DMD 2.068 (a version before the
> port to D) works fine. However it turns out that indeed anti-virus is
> the problem. My laptop is on Windows 7 and if I turn off real-time
> protection on Microsoft Security Essentials, DMD starts instantaneously.

I wonder how we can sign dmd to prevent a scan with every run. Any 
experts in the matter n da house? -- Andrei