On Thursday, 1 October 2020 at 20:28:58 UTC, kinke wrote:
On Thursday, 1 October 2020 at 20:03:19 UTC, WhatMeWorry wrote:
Yes, but shouldn't the /NOENTRY option take care of that. Say,
I just want to make a DLL of simple functions.
Your little example has 2 problems, the first being an
incompatible extern(D) ex/import (mydll.myAddSeven vs.
user.myAddSeven) and the second being an incomplete/wrong
linker cmdline. When changing the myAddSeven declarations to
extern(C++) (another option being a mydll.di header for the
import), it works with
dmd -m64 -shared -L/NOENTRY mydll.d
dmd -m64 user.d mydll.lib
For more details, see also
https://wiki.dlang.org/Win32_DLLs_in_D.
Thanks all. I've gotten it to work with:
dmd -m64 -ofmydll.dll mydll.d -L/NOENTRY -L/DLL
dmd -m64 user.d mydll.lib
user.exe
total = 12
But then I got cocky and decided to just added a writeln() in the
mydll.d file and I've been fighting this link error ever since:
C:\Program Files (x86)\Microsoft Visual
Studio\2019\Community\VC\Tools\MSVC\14.27.29110\bin\Hostx64\x64\link.exe /NOLOGO "mydll.obj" /OUT:"mydll.dll" /DEFAULTLIB:phobos64 /NOENTRY /DLL /OPT:NOICF /LIBPATH:"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\lib\x64" legacy_stdio_definitions.lib /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.18362.0\ucrt\x64" /LIBPATH:"C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x64"
Creating library mydll.lib and object mydll.exp
mydll.obj : error LNK2019: unresolved external symbol fwrite
referenced in function
_D3std5stdio__T13trustedFwriteTaZQsFNbNiNePOS4core4stdcQBx6_iobufxAaZm
phobos64.lib(object_72_81a.obj) : error LNK2001: unresolved
external symbol memcpy
phobos64.lib(exception_cf4_fff.obj) : error LNK2001: unresolved
external symbol memcpy
phobos64.lib(bits_23fa_21c.obj) : error LNK2001: unresolved
external symbol memcpy
phobos64.lib(gc_2413_a4e.obj) : error LNK2001: unresolved
external symbol memcpy
phobos64.lib(gc_2415_a03.obj) : error LNK2001: unresolved
external symbol memcpy
phobos64.lib(gc_2478_432.obj) : error LNK2001: unresolved
external symbol memcpy
o o o
