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September 29, 2020 Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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module user; export { int myAddSeven(int a, int b); } void main() { int total = myAddSeven(2, 3); } >dmd -m64 -c user.d module mydll; export extern(D) { int myAddSeven(int a, int b) { return a+b+7; } /* <-- function body */ } >dmd -c -shared -m64 mydll.d >link mydll.obj /DLL /NOENTRY Microsoft (R) Incremental Linker Version 14.27.29111.0 Copyright (C) Microsoft Corporation. All rights reserved. Creating library mydll.lib and object mydll.exp >link user.obj /implib:mydll.lib Microsoft (R) Incremental Linker Version 14.27.29111.0 Copyright (C) Microsoft Corporation. All rights reserved. LINK : fatal error LNK1104: cannot open file 'phobos64.lib' or when I give the linker phobos64.lib >link user.obj /implib:mydll.lib /LIBPATH:C:\D\dmd2\windows\lib64 Microsoft (R) Incremental Linker Version 14.27.29111.0 Copyright (C) Microsoft Corporation. All rights reserved. user.obj : error LNK2019: unresolved external symbol __imp__D4user10myAddSevenFiiZi referenced in function _Dmain phobos64.lib(stacktrace_1be8_3e5.obj) : error LNK2019: unresolved external symbol snprintf referenced in function _D4core3sys7windows10stacktrace10StackTrace13resolveNoSyncFAxmZAAa phobos64.lib(demangle_c96_79b.obj) : error LNK2001: unresolved external symbol snprintf phobos64.lib(parseoptions_e2c_21b.obj) : error LNK2001: unresolved external symbol snprintf phobos64.lib(parseoptions_e2c_21b.obj) : error LNK2019: unresolved external symbol sscanf referenced in function _D4core8internal12parseoptions5parseFNbNiAxaKANgaKfQkZb user.exe : fatal error LNK1120: 3 unresolved externals |
September 30, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to WhatMeWorry | On Tuesday, 29 September 2020 at 21:22:21 UTC, WhatMeWorry wrote: > module user; > > export { int myAddSeven(int a, int b); } > > [...] it is better to use this template https://github.com/dlang/dmd/tree/master/samples/mydll You don't have a DllMain. |
October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to Ferhat Kurtulmuş | On Wednesday, 30 September 2020 at 11:45:53 UTC, Ferhat Kurtulmuş wrote: > On Tuesday, 29 September 2020 at 21:22:21 UTC, WhatMeWorry wrote: >> module user; >> >> export { int myAddSeven(int a, int b); } >> >> [...] > > it is better to use this template https://github.com/dlang/dmd/tree/master/samples/mydll > > You don't have a DllMain. yeah that's the problem, check [0] OP. The author makes commercial dll on windows so he knows what he speaks about [0] https://forum.dlang.org/post/mscgsclxwtjcferfxoet@forum.dlang.org |
October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to WhatMeWorry | On Tuesday, 29 September 2020 at 21:22:21 UTC, WhatMeWorry wrote: > module user; > > export { int myAddSeven(int a, int b); } > > [...] As example, DLL: https://github.com/vitalfadeev/dlang-dll |
October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to user1234 | On Thursday, 1 October 2020 at 09:22:29 UTC, user1234 wrote:
> On Wednesday, 30 September 2020 at 11:45:53 UTC, Ferhat Kurtulmuş wrote:
>> On Tuesday, 29 September 2020 at 21:22:21 UTC, WhatMeWorry wrote:
>>> module user;
>>>
>>> export { int myAddSeven(int a, int b); }
>>>
>>> [...]
>>
>> it is better to use this template https://github.com/dlang/dmd/tree/master/samples/mydll
>>
>> You don't have a DllMain.
>
> yeah that's the problem, check [0] OP. The author makes commercial dll on windows so he knows what he speaks about
>
> [0] https://forum.dlang.org/post/mscgsclxwtjcferfxoet@forum.dlang.org
Yes, but shouldn't the /NOENTRY option take care of that. Say, I just want to make a DLL of simple functions.
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October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to WhatMeWorry | 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. |
October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to kinke | 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 |
October 01, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to WhatMeWorry | On Thursday, 1 October 2020 at 21:35:42 UTC, WhatMeWorry wrote:
> On Thursday, 1 October 2020 at 20:28:58 UTC, kinke wrote:
>> [...]
>
>
> Thanks all. I've gotten it to work with:
>
>>[...]
>
>>[...]
>
>>[...]
> total = 12
>
> [...]
1) try running your commands in Visual Studio Native x64 CMD.
2) try link with msvcrt.lib
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October 02, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to Ferhat Kurtulmuş | On Thursday, 1 October 2020 at 21:56:46 UTC, Ferhat Kurtulmuş wrote: > On Thursday, 1 October 2020 at 21:35:42 UTC, WhatMeWorry wrote: >> On Thursday, 1 October 2020 at 20:28:58 UTC, kinke wrote: >>> [...] >> >> >> Thanks all. I've gotten it to work with: >> >>>[...] >> >>>[...] >> >>>[...] >> total = 12 >> >> [...] > > 1) try running your commands in Visual Studio Native x64 CMD. Yes, I've been doing that. > 2) try link with msvcrt.lib The only msvcrt.lib I can find on my Windows 10 machine is: "C:\Windows Kits\10\Lib\10.0.19041.0\um\x64\ntstc_msvcrt.lib" Also on Microsoft's docs https://docs.microsoft.com/en-us/cpp/c-runtime-library/crt-library-features?view=vs-2019 it talks about a ucrt.lib? |
October 02, 2020 Re: Trying to create a trivial 64 bit D Lang DLL on a Windows 10 machine and cant get past linking. | ||||
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Posted in reply to WhatMeWorry | On Friday, 2 October 2020 at 07:34:03 UTC, WhatMeWorry wrote: > On Thursday, 1 October 2020 at 21:56:46 UTC, Ferhat Kurtulmuş wrote: >> On Thursday, 1 October 2020 at 21:35:42 UTC, WhatMeWorry wrote: >>> On Thursday, 1 October 2020 at 20:28:58 UTC, kinke wrote: >>>> [...] >>> >>> >>> Thanks all. I've gotten it to work with: >>> >>>>[...] >>> >>>>[...] >>> >>>>[...] >>> total = 12 >>> >>> [...] >> >> 1) try running your commands in Visual Studio Native x64 CMD. > > Yes, I've been doing that. > >> 2) try link with msvcrt.lib > > The only msvcrt.lib I can find on my Windows 10 machine is: > > "C:\Windows Kits\10\Lib\10.0.19041.0\um\x64\ntstc_msvcrt.lib" > > Also on Microsoft's docs > https://docs.microsoft.com/en-us/cpp/c-runtime-library/crt-library-features?view=vs-2019 it talks about a ucrt.lib? Here are the steps I used with success: in a VCx64 cmd -> set PATH=%PATH%;D:\dlang\dmd.2.094.0.windows\dmd2\windows\bin64 ------------------------ module user; import std.stdio; import mydll; // Yes, I imported the dll here //export { int myAddSeven(int a, int b); } void main() { int total = mydll.myAddSeven(2, 3); writeln(total); } ------------------------- module mydll; export extern(D) { int myAddSeven(int a, int b) { return a+b+7; } /* <-- function body */ } --------------------------- dmd -m64 -ofmydll.dll mydll.d -L/NOENTRY -L/DLL dmd -m64 user.d mydll.lib |
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