DMD - issue building shared library

[Dibyendu Majumdar via Digitalmars-d]

Hi

I have an existing C shared library that I am trying to link to a 
D shared library. The D shared library at present only has a 
binding (extern (C)) definition, nothing else.

When I try to create the shared library using the DMD command 
line I get link errors.

Platform is Windows 10 64-bit.

The command I am using is:

dmd -m64 -shared -v -L/LIBPATH:c:\ravi\lib -Lravimatrix.lib 
source\matrix.d

Partial output from DMD follows:

binary    C:\D\dmd2\windows\bin\dmd.exe
version   v2.069.2
config    C:\D\dmd2\windows\bin\sc.ini
parse     matrix
importall Dmatrix
import    object        
(C:\D\dmd2\windows\bin\..\..\src\druntime\import\object.d)
import    std.stdint    
(C:\D\dmd2\windows\bin\..\..\src\phobos\std\stdint.d)
import    core.stdc.stdint      
(C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\stdc\stdint.d)
...
import    core.stdc.string      
(C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\stdc\string.d)
semantic2 Dmatrix
semantic3 Dmatrix
code      Dmatrix
C:\Program Files (x86)\Microsoft Visual Studio 
14.0\VC\\bin\x86_amd64\link.exe /NOLOGO matrix   /DLL 
/LIBPATH:c:\ravi\lib ravimatrix.lib /OPT:NOICF 
/LIBPATH:"C:\Program Files (x86)\Microsoft Visual Studio 
14.0\VC\\lib\amd64" /LIBPATH:"C:\Program Files (x86)\Windows 
Kits\8.1\\lib\x64"  /LIBPATH:"C:\Program Files (x86)\Windows 
Kits\10\\lib\10.0.10240.0\ucrt\x64" legacy_stdio_definitions.lib
matrix.obj : error LNK2001: unresolved external symbol 
_D3std5stdio12__ModuleInfoZ
matrix.obj : error LNK2001: unresolved external symbol 
_D15TypeInfo_Struct6__vtblZ
matrix.obj : error LNK2019: unresolved external symbol _d_assert 
referenced in function _D7Dmatrix8__assertFiZv
matrix.obj : error LNK2019: unresolved external symbol 
_d_unittest referenced in function _D7Dmatrix15__unittest_failFiZv
matrix.obj : error LNK2019: unresolved external symbol 
_d_arraybounds referenced in function _D7Dmatrix7__arrayZ
LINK : error LNK2001: unresolved external symbol 
_DllMainCRTStartup
matrix.dll : fatal error LNK1120: 6 unresolved externals
--- errorlevel 1120