fatal error lnk1120 unresolved externals with a plugin which contains .lib

[StarFox00007 (FoxBandyKoot)]

Hello, I’m trying to package a project with this SVG plugin, I check with ChatGPT and the web, I updated my Build.cs file, I tried to include the luna lib like this (and other variants):

		/*string LunaSVGRoot = Path.Combine(ModuleDirectory, "../../Plugins/SVG/Source/ThirdParty/lunasvg/");

		// Windows x64 configuration.
		if (Target.Platform == UnrealTargetPlatform.Win64)
		{
			// Adds lunasvg includes.
			PrivateIncludePaths.Add(Path.Combine(LunaSVGRoot, "inc/x64-windows/"));

			// Adds lunasvg library.
			PublicAdditionalLibraries.Add(Path.Combine(LunaSVGRoot, "lib/x64-windows/lunasvg.lib"));
			PublicAdditionalLibraries.Add(Path.Combine(LunaSVGRoot, "lib/x64-windows/plutovg.lib"));
		}*/
		//PublicAdditionalLibraries.Add(Path.Combine("Plugins/SVG/Source/ThirdParty/lunasvg/", "lib/x64-windows/lunasvg.lib"));

        string SVGDir = Path.Combine(ModuleDirectory, "../../Plugins/SVG/");
        string includeDir = Path.Combine(SVGDir, "Source/ThirdParty/lunasvg/");
		string libFile = Path.Combine(includeDir, "lib/x64-windows/lunasvg.lib");
		
		PublicIncludePaths.Add(includeDir);
		PublicPreBuildLibraries.Add(libFile);

I got these errors and I’m stuck for days to solve it,

“UATHelper: Packaging (Windows): Module.SVG.cpp.obj : error LNK2019: symbole externe non r solu “declspec(dllimport) public: cdecl lunasvg::Bitmap::Bitmap(int,int)” (imp_??0Bitmap@lunasvg@@QEAA@HH@Z) r f renc dans la fonction “public: cdecl FSVGBitmap::FSVGBitmap(unsigned int,unsigned int)” (??0FSVGBitmap@@QEAA@II@Z)”

This plugin contain a c++ dependency with luna, I paste here a part of his Build.cs

        string LunaSVGRoot = Path.Combine(PluginDirectory, "Source/ThirdParty/lunasvg/");

        if (Target.bBuildEditor)
        {
            PrivateDependencyModuleNames.AddRange(new string[]
            {
                "UnrealEd",
                "SlateCore",
                "Slate",
                "DesktopPlatform",
            });
        }

        // Windows x64 configuration.
        if (Target.Platform == UnrealTargetPlatform.Win64)
        {
            // Adds lunasvg includes.
            PrivateIncludePaths.Add(Path.Combine(LunaSVGRoot, "inc/x64-windows/"));

            // Adds lunasvg library.
            PublicAdditionalLibraries.Add(Path.Combine(LunaSVGRoot, "lib/x64-windows/lunasvg.lib"));
            PublicAdditionalLibraries.Add(Path.Combine(LunaSVGRoot, "lib/x64-windows/plutovg.lib"));
        }

someone has an idea?

[StarFox00007 (FoxBandyKoot)]

It seems that moving the SVG plugin from one folder to another folder (still in the Plugins folder) allows packaging. For example from Plugins/Marketplace to Plugins. It worked for me, then the error came back again, I recreated a Marketplace folder in Plugins, put the SVG folder in it, and it was good again.