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[libmagic] x64-windows-static: linking failure "DllMain already defined" #44559

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PolarGoose opened this issue Mar 22, 2025 · 0 comments · May be fixed by #44566
Open

[libmagic] x64-windows-static: linking failure "DllMain already defined" #44559

PolarGoose opened this issue Mar 22, 2025 · 0 comments · May be fixed by #44566
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@Cheney-W
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category:port-bug The issue is with a library, which is something the port should already support

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@PolarGoose
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PolarGoose commented Mar 22, 2025 •
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Operating system

Windows

Compiler

MSVC

Steps to reproduce the behavior

  • Add libmagic to your list of dependencies
  • Build the project as x64-windows-static-rel or x64-windows-static-dbg
  • The magic.lib that vcpkg will use contains DllMain because the variable BUILD_AS_WINDOWS_STATIC_LIBARAY is not set during the build of the libmagic package. source code of magic.c

Failure logs

Error	LNK2005	DllMain already defined in MyProjectName.obj	MyProjectName C:\MyProject\magic.lib(magic.obj)	1

Additional context

No response
@PolarGoose PolarGoose added the category:port-bug The issue is with a library, which is something the port should already support label Mar 22, 2025
@PolarGoose PolarGoose linked a pull request Mar 23, 2025 that will close this issue
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@Cheney-W Cheney-W

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category:port-bug The issue is with a library, which is something the port should already support
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[libmagic] Fix build with x64-windows-static triplet PolarGoose/vcpkg-fix-libmagic-port
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@PolarGoose @Cheney-W