optlink options to reduce file size?

[simendsjo]

On 27.07.2011 23:00, Dmitry Olshansky wrote:
> On 27.07.2011 21:16, simendsjo wrote:
>> On 27.07.2011 15:45, Dmitry Olshansky wrote:
>>> On 27.07.2011 15:21, simendsjo wrote:
>>>> A simple hello world like dfl application takes 1.2mb. Upx does a
>>>> great job packing this to 200k, but I wonder if there is a way to make
>>>> optlink generate smaller executables?
>>>>
>>>> I couldn't find a way to get help on the numerous options in optlink,
>>>> and the help page at digitalmars doesn't list them either.
>>> I've noticed around two times smaller exes when linked with unilink. So
>>> if you don't like packing you may try it:
>>> ftp://ftp.styx.cabel.net/pub/UniLink/ulnb0319.zip
>>> <ftp://ftp.styx.cabel.net/pub/UniLink/>
>>> just make sure you configured it correctly (should be straightforward,
>>> there are examples)
>>>
>>
>> Thanks. Any idea if unilink works with libraries linked with optlink?
>> I get "Error: Invalid library file (3) 'some optlink.lib'"
>
> For what it's worth any D2 app uses phobos.lib and obviously that
> worked. Not that it was linked, library is a sort of a package with obj
> files. Also check if this is in fact library it might very well be
> renamed executable in which case 2 first bytes of file are 'MZ'.
> It should work with both OMF (DMC, old MS VC++ etc.) and COFF (MinGW,
> modern MS C++ etc.) libraries.
>

Tried a minimal sample using only phobos. Gave me another error:
Error: Unresolved external '__acrtused_con' referenced from 't.obj'
I downloaded the entire dm compiler and added snn.lib which solved the 
problem.

I'm still getting linker errors on the old file though.

 > dmd t3 dfl.lib
No problem.

 > ulink.exe -Go -Tpe t3.obj,t3.exe,,dfl.lib
UniLink v1.07 [beta] (build 3.19)
Error: Invalid library file (3) 'c:\d\ext\dwin\lib\dfl.lib'