Linking COFF and OMF

[Trass3r]

> In 2.052 several of the most complicated dependencies on snn.lib (those 
> relating to exception handling) were removed. I don't know how many more 
> DMC-specific ones there are, but using another snn.lib might be possible 
> now.

Compiled a hello world with empty snn.lib:


OPTLINK (R) for Win32  Release 8.00.8
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
helloworld.obj(helloworld) 
 Error 42: Symbol Undefined __acrtused_con
C:\dmd\windows\bin\..\lib\phobos.lib(dmain2) 
 Error 42: Symbol Undefined ___alloca
C:\dmd\windows\bin\..\lib\phobos.lib(dmain2) 
 Error 42: Symbol Undefined __except_list
helloworld.obj(helloworld) 
 Error 42: Symbol Undefined _fprintf
C:\dmd\windows\bin\..\lib\phobos.lib(dmain2) 
 Error 42: Symbol Undefined _wcslen
C:\dmd\windows\bin\..\lib\phobos.lib(deh) 
 Error 42: Symbol Undefined __tls_array
C:\dmd\windows\bin\..\lib\phobos.lib(deh) 
 Error 42: Symbol Undefined __tls_index
C:\dmd\windows\bin\..\lib\phobos.lib(gc) 
 Error 42: Symbol Undefined _memcpy
C:\dmd\windows\bin\..\lib\phobos.lib(gc) 
 Error 42: Symbol Undefined _malloc
C:\dmd\windows\bin\..\lib\phobos.lib(memory) 
 Error 42: Symbol Undefined __xi_a
C:\dmd\windows\bin\..\lib\phobos.lib(memory) 
 Error 42: Symbol Undefined __end
C:\dmd\windows\bin\..\lib\phobos.lib(gcx) 
 Error 42: Symbol Undefined _calloc
C:\dmd\windows\bin\..\lib\phobos.lib(gcx) 
 Error 42: Symbol Undefined _free
C:\dmd\windows\bin\..\lib\phobos.lib(gcx) 
 Error 42: Symbol Undefined _memset
C:\dmd\windows\bin\..\lib\phobos.lib(object_) 
 Error 42: Symbol Undefined _strlen
C:\dmd\windows\bin\..\lib\phobos.lib(thread) 
 Error 42: Symbol Undefined __beginthreadex
C:\dmd\windows\bin\..\lib\phobos.lib(thread) 
 Error 42: Symbol Undefined __tlsend
C:\dmd\windows\bin\..\lib\phobos.lib(thread) 
 Error 42: Symbol Undefined __tlsstart
C:\dmd\windows\bin\..\lib\phobos.lib(object_) 
 Error 42: Symbol Undefined _memcmp
C:\dmd\windows\bin\..\lib\phobos.lib(gcx) 
 Error 42: Symbol Undefined _memmove
C:\dmd\windows\bin\..\lib\phobos.lib(gcx) 
 Error 42: Symbol Undefined _realloc
C:\dmd\windows\bin\..\lib\phobos.lib(regexp) 
 Error 42: Symbol Undefined _printf
C:\dmd\windows\bin\..\lib\phobos.lib(regexp) 
 Error 42: Symbol Undefined _memchr
C:\dmd\windows\bin\..\lib\phobos.lib(datetime) 
 Error 42: Symbol Undefined _localtime
C:\dmd\windows\bin\..\lib\phobos.lib(datetime) 
 Error 42: Symbol Undefined _tzset
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined __iob
C:\dmd\windows\bin\..\lib\phobos.lib(monitor) 
 Error 42: Symbol Undefined __assert
C:\dmd\windows\bin\..\lib\phobos.lib(lifetime) 
 Error 42: Symbol Undefined __LDIV@
C:\dmd\windows\bin\..\lib\phobos.lib(outbuffer) 
 Error 42: Symbol Undefined __vsnprintf
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _fclose
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _tmpfile
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _ftell
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _fseek
C:\dmd\windows\bin\..\lib\phobos.lib(exception) 
 Error 42: Symbol Undefined _strerror
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _setmode
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined ___fhnd_info
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _fread
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined _fopen
C:\dmd\windows\bin\..\lib\phobos.lib(conv) 
 Error 42: Symbol Undefined __ULDIV@
C:\dmd\windows\bin\..\lib\phobos.lib(format) 
 Error 42: Symbol Undefined ___pfloatfmt
C:\dmd\windows\bin\..\lib\phobos.lib(errno) 
 Error 42: Symbol Undefined _errno
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined ___fp_unlock
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined __fgetc_nlock
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined __fgetwc_nlock
C:\dmd\windows\bin\..\lib\phobos.lib(stdio) 
 Error 42: Symbol Undefined ___fp_lock
C:\dmd\windows\bin\..\lib\phobos.lib(ti_cfloat) 
 Error 42: Symbol Undefined __Ccmp