Cannot open libc.lib

I'm trying to compile a plugin using Visual Studio 2008, but I get the following error message:

LINK : fatal error LNK1104: cannot open file 'LIBC.lib'

How do I solve this? I don't see libc.lib included anywhere, so I don't even know why it's looking for it...

2008 is not supported by SCons. See some recent threads on the subject.

I know. I'm not using SCons. I'm trying to compile a third-party plugin.

If you're importing a dsp file, remove the libc reference and use the flags in C/C++ properties page (/MT, /MD, etc.).

I converted/imported the ExDll project from v2.42. I searched through all files, libc.lib is not included anywhere. I tried both /MT and /MD, both give the same result. (Cannot open libc.lib)

I think it's the provided pluginapi.lib file that depends on libc.lib. Is there anything I can do about that?

You do not need libc.lib with VS 2008. It is implied and links without an explicit libc.lib reference. Remove it from the project.

From what project? My project (ExDll) does not include libc.lib anywhere.

Are you compiling via a VS 2008 project or via Scons?

VS 2008 project

The plug-in library is requesting libc.lib for an unknown reason. I will check it out. You should open a bug report for it.

Reported.

I've looked a bit more into it and all files contain that reference. It's the /NODEFAULTLIB flag that cancels them. You should use that flag with VS2008 too and it should work. I don't know how it's called in the GUI but it should be under Linker in Project Settings. Maybe Ignore Default Libraries or something similar.

This is the output with /NODEFAULTLIB turned on:

1>------ Build started: Project: exdll, Configuration: Debug Win32 ------

1>Compiling...

1>exdll.c

1>Compiling manifest to resources...

1>Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.0

1>Copyright (C) Microsoft Corporation.  All rights reserved.

1>Linking...

1>   Creating library .\Debug/exdll.lib and object .\Debug/exdll.exp

1>exdll.obj : error LNK2019: unresolved external symbol ___security_cookie referenced in function _myFunction

1>exdll.obj : error LNK2019: unresolved external symbol @__security_check_cookie@4 referenced in function _myFunction

1>exdll.obj : error LNK2019: unresolved external symbol @_RTC_CheckStackVars@8 referenced in function _myFunction

1>exdll.obj : error LNK2019: unresolved external symbol __RTC_CheckEsp referenced in function _myFunction

1>exdll.obj : error LNK2001: unresolved external symbol __RTC_Shutdown

1>exdll.obj : error LNK2001: unresolved external symbol __RTC_InitBase

1>LINK : error LNK2001: unresolved external symbol __DllMainCRTStartup@12

1>.\Debug/exdll.dll : fatal error LNK1120: 7 unresolved externals

1>Build log was saved at "file://c:\Program\NSIS\Examples\Plugin\Debug\BuildLog.htm"

1>exdll - 8 error(s), 0 warning(s)

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

specify DllMain as the entry point

And get rid of all the safety checks.

So I manually defined the entry point and disabled "Buffer Security Check" (/GS-).

I'm now down to the following error messages:

1>------ Build started: Project: exdll, Configuration: Debug Win32 ------

1>Compiling...

1>exdll.c

1>Linking...

1>   Creating library .\Debug/exdll.lib and object .\Debug/exdll.exp

1>exdll.obj : error LNK2019: unresolved external symbol @_RTC_CheckStackVars@8 referenced in function _myFunction

1>exdll.obj : error LNK2019: unresolved external symbol __RTC_CheckEsp referenced in function _myFunction

1>exdll.obj : error LNK2001: unresolved external symbol __RTC_Shutdown

1>exdll.obj : error LNK2001: unresolved external symbol __RTC_InitBase

1>.\Debug/exdll.dll : fatal error LNK1120: 4 unresolved externals

1>Build log was saved at "file://c:\Program\NSIS\Examples\Plugin\Debug\BuildLog.htm"

1>exdll - 5 error(s), 0 warning(s)

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Got rid of the last errors by setting "Basic Runtime Checks" to "Default" in the project properties.

Could you post the resulting vcproj/sln so I can include it?

Most certainly 🙂

Thanks.