[wix-users] error LGHT0091: Duplicate symbol

Wesley Manning wmanning at dynagen.ca
Mon Apr 25 04:55:59 PDT 2016 

Attachments are filtered off so it must be pasted in the main e-mail.

-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Farrukh Waheed
Sent: April-25-16 2:33 AM
To: ib at ianbellsoftware.com; WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Subject: Re: [wix-users] error LGHT0091: Duplicate symbol

I didn't find the zip file. However from log, it seems that you have added some files more than one times using same Component IDs (or may be File Ids). For example, main.cpp's Component at line 41 is also present at line 61. Please check Component definition where it says "Location of symbol related to previous error.".

Can you please share only Product.wxs?

On 25 April 2016 at 09:50, Ian Bell <ib at ianbellsoftware.com> wrote:

> I have not been able to resolve a "error LGHT0091: Duplicate symbol" 
> error message that has been plaguing me for 2 days and I am hoping to 
> find some help here.
>
>
>
> The attached ZIP file contains a small Visual Studio 2010 solution 
> which can
> be used to replicate the problem.   The sample VS2010 solution includes two
> C++ projects and a WIX installer.    The two C++ projects contain
> identically named source files (e.g. main.cpp, main.h, stdafx.cpp,
> stdafx.h).   Attempting to build a WIX project with non-unique source code
> filenames (i.e. their filepaths differ but the filenames are the same) 
> generates error messages similar to 'error LGHT0091: Duplicate symbol
> found'.   The complete error message generated for the sample solution is
> included at the end of this email message.   Google lists only handful of
> posts which cite the LGHT0091 and LGHT0092 error numbers and these 
> refer to GUI related problems - something my WIX installer avoids.
>
>
>
> One solution is to provide unique source code filenames between 
> projects - but this is a very impractical, particularly for files with 
> common Visual Studio generated filenames names such as 'stdafx.cpp', 
> 'stdafx.h', 'resource.h', etc.
>
>
>
> So my question is has anyone encountered the problem before and found a
> solution?   I would appreciate any suggestions you might have.
>
>
>
> ThanX
>
>
>
> Ian
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> 1>------ Build started: Project: WixInstaller, Configuration: Debug 
> 1>x86
> ------
>
> 1>            C:\Program Files (x86)\WiX Toolset v3.10\bin\candle.exe
> -dDebug -d"DevEnvDir=C:\Program Files (x86)\Microsoft Visual Studio 
> 10.0\Common7\IDE\\" -d"SolutionDir=e:\Users\admin\Documents\Visual 
> Studio 2010\Projects\testWixError\\" -dSolutionExt=.sln 
> -dSolutionFileName=testWixError.sln -dSolutionName=testWixError 
> -d"SolutionPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\testWixError.sln" -dConfiguration=Debug 
> -dOutDir=bin\Debug\ -dPlatform=x86 
> -d"ProjectDir=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\\" -dProjectExt=.wixproj 
> -dProjectFileName=WixInstaller.wixproj -dProjectName=WixInstaller 
> -d"ProjectPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\WixInstaller.wixproj"
> -d"TargetDir=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\bin\Debug\\" -dTargetExt=.msi 
> -dTargetFileName=WixInstaller.msi -dTargetName=WixInstaller 
> -d"TargetPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\bin\Debug\WixInstaller.msi"
> -dProjA.Configuration=Debug -d"ProjA.FullConfiguration=Debug|Win32"
> -dProjA.Platform=Win32 
> -d"ProjA.ProjectDir=e:\Users\admin\Documents\Visual
> Studio 2010\Projects\testWixError\ProjA\\" -dProjA.ProjectExt=.vcxproj 
> -dProjA.ProjectFileName=ProjA.vcxproj -dProjA.ProjectName=ProjA 
> -d"ProjA.ProjectPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\ProjA\ProjA.vcxproj"
> -d"ProjA.TargetDir=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\Debug\\" -dProjA.TargetExt=.exe 
> -dProjA.TargetFileName=ProjA.exe -dProjA.TargetName=ProjA 
> -d"ProjA.TargetPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\Debug\ProjA.exe" 
> -dProjB.Configuration=Debug -d"ProjB.FullConfiguration=Debug|Win32" 
> -dProjB.Platform=Win32 
> -d"ProjB.ProjectDir=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\ProjB\\" -dProjB.ProjectExt=.vcxproj 
> -dProjB.ProjectFileName=ProjB.vcxproj -dProjB.ProjectName=ProjB 
> -d"ProjB.ProjectPath=e:\Users\admin\Documents\Visual Studio 2010\Projects\testWixError\ProjB\ProjB.vcxproj"
> -d"ProjB.TargetDir=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\Debug\\" -dProjB.TargetExt=.exe 
> -dProjB.TargetFileName=ProjB.exe -dProjB.TargetName=ProjB 
> -d"ProjB.TargetPath=e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\Debug\ProjB.exe" -out obj\Debug\ -arch x86 
> Product.wxs
>
> 1>            C:\Program Files (x86)\WiX Toolset v3.10\bin\Light.exe 
> 1> -out
> "e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\bin\Debug\WixInstaller.msi" 
> -pdbout "e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\bin\Debug\WixInstaller.wixpdb"
> -cultures:null -contentsfile
> obj\Debug\WixInstaller.wixproj.BindContentsFileListnull.txt 
> -outputsfile 
> obj\Debug\WixInstaller.wixproj.BindOutputsFileListnull.txt
> -builtoutputsfile
> obj\Debug\WixInstaller.wixproj.BindBuiltOutputsFileListnull.txt
> -wixprojectfile "e:\Users\admin\Documents\Visual Studio 
> 2010\Projects\testWixError\WixInstaller\WixInstaller.wixproj"
> obj\Debug\Product.wixobj
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(41,0): error LGHT0091:
> Duplicate symbol 'File:main.cpp' found. This typically means that an 
> Id is duplicated. Check to make sure all your identifiers of a given 
> type (File, Component, Feature) are unique.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(67,0): error LGHT0092:
> Location of symbol related to previous error.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(45,0): error LGHT0091:
> Duplicate symbol 'File:main.h' found. This typically means that an Id 
> is duplicated. Check to make sure all your identifiers of a given type 
> (File, Component, Feature) are unique.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(71,0): error LGHT0092:
> Location of symbol related to previous error.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(49,0): error LGHT0091:
> Duplicate symbol 'File:Resource.h' found. This typically means that an 
> Id is duplicated. Check to make sure all your identifiers of a given 
> type (File, Component, Feature) are unique.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(75,0): error LGHT0092:
> Location of symbol related to previous error.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(53,0): error LGHT0091:
> Duplicate symbol 'File:stdafx.cpp' found. This typically means that an 
> Id is duplicated. Check to make sure all your identifiers of a given 
> type (File, Component, Feature) are unique.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(79,0): error LGHT0092:
> Location of symbol related to previous error.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(57,0): error LGHT0091:
> Duplicate symbol 'File:stdafx.h' found. This typically means that an 
> Id is duplicated. Check to make sure all your identifiers of a given 
> type (File, Component, Feature) are unique.
>
> 1>e:\Users\admin\Documents\Visual Studio
> 2010\Projects\testWixError\WixInstaller\Product.wxs(83,0): error LGHT0092:
> Location of symbol related to previous error.
>
> 1>Done building project "WixInstaller.wixproj" -- FAILED.
>
> 1>
>
> ========== Build: 0 succeeded, 1 failed, 2 up-to-date, 0 skipped 
> ==========
>
>
>
>
>
>
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