LDC2 -I option results in unresolved externals

Oct 12, 2018

I'm using the latest LDC2 beta, and when running the compiler with -I (Look for imports also in <directory>) it fails with unresolved externals. These are my commands. ===================================================== $ ldc2 "source\setup.d" -I "source" -J "build\vars" -of "build\bin\setup.exe" -m32 -g setup.obj : error LNK2019: unresolved external symbol __D6common17createErrorDialogFxC9ExceptionZv referenced in function __Dmain setup.obj : error LNK2019: unresolved external symbol __D6common14getConsoleArgsFxPuZAAya referenced in function __D5setup20getAvailableBrowsersFZ14__foreachbody1MFKC3std7windows8registry3KeyZi setup.obj : error LNK2001: unresolved external symbol __D6common12__ModuleInfoZ build\bin\setup.exe : fatal error LNK1120: 3 unresolved externals Error: C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\link.exe failed with status: 1120 ===================================================== But this next one works fine. ===================================================== $ ldc2 "source\setup.d" "source/common.d" -J "build\vars" -of "build\bin\setup.exe" -m32 -g ===================================================== I'm using LDC2 version 1.12.0-beta2, on DMD v2.082.0, on Windows with VS Build Tools 2017. Any solutions or corrections appreciated.

October 12, 2018

Re: LDC2 -I option results in unresolved externals

Posted by Mike Parker
in reply to spikespaz

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Mike Parker

Posted in reply to spikespaz

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On Friday, 12 October 2018 at 06:01:12 UTC, spikespaz wrote:
> I'm using the latest LDC2 beta, and when running the compiler with -I (Look for imports also in <directory>) it fails with unresolved externals. These are my commands.
>
> =====================================================
>
> $ ldc2 "source\setup.d" -I "source" -J "build\vars" -of "build\bin\setup.exe" -m32 -g
> setup.obj : error LNK2019: unresolved external symbol __D6common17createErrorDialogFxC9ExceptionZv referenced in function __Dmain
> setup.obj : error LNK2019: unresolved external symbol __D6common14getConsoleArgsFxPuZAAya referenced in function __D5setup20getAvailableBrowsersFZ14__foreachbody1MFKC3std7windows8registry3KeyZi
> setup.obj : error LNK2001: unresolved external symbol __D6common12__ModuleInfoZ
> build\bin\setup.exe : fatal error LNK1120: 3 unresolved externals
> Error: C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\link.exe failed with status: 1120
>
> =====================================================
>
> But this next one works fine.
>
> =====================================================
>
> $ ldc2 "source\setup.d" "source/common.d" -J "build\vars" -of "build\bin\setup.exe" -m32 -g
>
> =====================================================
>
> I'm using LDC2 version 1.12.0-beta2, on DMD v2.082.0, on Windows with VS Build Tools 2017.
> Any solutions or corrections appreciated.

-I does not tell the compiler to actually compile the modules it finds in the given directory. It's only for symbol lookup.

DMD has the -i option which tells the compiler to automatically compile all imported modules. I don't know if LDC has anything similar, the wiki page listing its command line options hasn't been updated in a while.

On Friday, 12 October 2018 at 07:32:26 UTC, Mike Parker wrote: > DMD has the -i option which tells the compiler to automatically compile all imported modules. I don't know if LDC has anything similar. It does, same option.

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