使用 Premake 构建 Assimp 时出现链接器错误

Question

我正在引擎中实现 assimp 5.0.1，但我无法访问 link，我猜是因为包含它的方式，但我不知道它是什么我做错了。

我在 Windows，使用 Visual Studio 2019 (C++)，我采取的步骤是使用 cmake 构建 assimp 作为文档中的状态并复制文件夹 'code/' 'contrib/' 和 'include/' 在项目中，在 'Assimp' 文件夹中。有了这个，我制作了一个 premake 文件以在引擎项目中构建它（我使用 premake5 作为生成器）。

问题是我遇到了 5 个 linker 错误。我假设我没有在 premake 中包含一些需要的文件。 linker 错误是下一个：

包括包含给出 linker 错误的函数的文件会产生更多 linker 问题，我无法通过继续添加或包含文件来解决这些问题，所以我不知道如何继续。

在 premake 文件（下面复制）中，如果我，例如，评论一些像“ASSIMP_BUILD_NO_IFC_IMPORTER”这样的定义，它会触发更多 linker 错误（在这种情况下是 IFC 函数)，这就是为什么我猜有一些错误的包含或其他东西。有谁知道这可能是错的？它会有帮助吗，因为我真的迷路了，我已经用了一个星期了。

我正在使用的 premake 文件是下一个：

project 'Assimp'
    kind 'StaticLib'
    language "C++"
    cppdialect "C++17"
    staticruntime "On"

    targetdir ("bin/" .. outputdir .. "/%{prj.name}")
    objdir ("bin-int/" .. outputdir .. "/%{prj.name}")

    defines
    {
        -- "SWIG",
        --"ASSIMP_BUILD_NO_OWN_ZLIB",
        "ASSIMP_BUILD_NO_X_IMPORTER",
        "ASSIMP_BUILD_NO_3DS_IMPORTER",
        "ASSIMP_BUILD_NO_MD3_IMPORTER",
        "ASSIMP_BUILD_NO_MDL_IMPORTER",
        "ASSIMP_BUILD_NO_MD2_IMPORTER",
        "ASSIMP_BUILD_NO_PLY_IMPORTER",
        "ASSIMP_BUILD_NO_ASE_IMPORTER",
        -- "ASSIMP_BUILD_NO_OBJ_IMPORTER",
        "ASSIMP_BUILD_NO_AMF_IMPORTER",
        "ASSIMP_BUILD_NO_HMP_IMPORTER",
        "ASSIMP_BUILD_NO_SMD_IMPORTER",
        "ASSIMP_BUILD_NO_MDC_IMPORTER",
        "ASSIMP_BUILD_NO_MD5_IMPORTER",
        "ASSIMP_BUILD_NO_STL_IMPORTER",
        "ASSIMP_BUILD_NO_LWO_IMPORTER",
        "ASSIMP_BUILD_NO_DXF_IMPORTER",
        "ASSIMP_BUILD_NO_NFF_IMPORTER",
        "ASSIMP_BUILD_NO_RAW_IMPORTER",
        "ASSIMP_BUILD_NO_OFF_IMPORTER",
        "ASSIMP_BUILD_NO_AC_IMPORTER",
        "ASSIMP_BUILD_NO_BVH_IMPORTER",
        "ASSIMP_BUILD_NO_IRRMESH_IMPORTER",
        "ASSIMP_BUILD_NO_IRR_IMPORTER",
        "ASSIMP_BUILD_NO_Q3D_IMPORTER",
        "ASSIMP_BUILD_NO_B3D_IMPORTER",
        "ASSIMP_BUILD_NO_COLLADA_IMPORTER",
        "ASSIMP_BUILD_NO_TERRAGEN_IMPORTER",
        "ASSIMP_BUILD_NO_CSM_IMPORTER",
        "ASSIMP_BUILD_NO_3D_IMPORTER",
        "ASSIMP_BUILD_NO_LWS_IMPORTER",
        "ASSIMP_BUILD_NO_OGRE_IMPORTER",
        "ASSIMP_BUILD_NO_OPENGEX_IMPORTER",
        "ASSIMP_BUILD_NO_MS3D_IMPORTER",
        "ASSIMP_BUILD_NO_COB_IMPORTER",
        "ASSIMP_BUILD_NO_BLEND_IMPORTER",
        "ASSIMP_BUILD_NO_Q3BSP_IMPORTER",
        "ASSIMP_BUILD_NO_NDO_IMPORTER",
        "ASSIMP_BUILD_NO_IFC_IMPORTER",
        "ASSIMP_BUILD_NO_XGL_IMPORTER",
        --"ASSIMP_BUILD_NO_FBX_IMPORTER",
        "ASSIMP_BUILD_NO_ASSBIN_IMPORTER",
        "ASSIMP_BUILD_NO_GLTF_IMPORTER",
        "ASSIMP_BUILD_NO_C4D_IMPORTER",
        "ASSIMP_BUILD_NO_3MF_IMPORTER",
        "ASSIMP_BUILD_NO_X3D_IMPORTER",
        "ASSIMP_BUILD_NO_MMD_IMPORTER",

        "ASSIMP_BUILD_NO_STEP_EXPORTER",
        "ASSIMP_BUILD_NO_SIB_IMPORTER",     
        -- "ASSIMP_BUILD_NO_MAKELEFTHANDED_PROCESS",
        -- "ASSIMP_BUILD_NO_FLIPUVS_PROCESS",
        -- "ASSIMP_BUILD_NO_FLIPWINDINGORDER_PROCESS",
        -- "ASSIMP_BUILD_NO_CALCTANGENTS_PROCESS",
        "ASSIMP_BUILD_NO_JOINVERTICES_PROCESS",
        -- "ASSIMP_BUILD_NO_TRIANGULATE_PROCESS",
        "ASSIMP_BUILD_NO_GENFACENORMALS_PROCESS",
        -- "ASSIMP_BUILD_NO_GENVERTEXNORMALS_PROCESS",
        "ASSIMP_BUILD_NO_REMOVEVC_PROCESS",
        "ASSIMP_BUILD_NO_SPLITLARGEMESHES_PROCESS",
        "ASSIMP_BUILD_NO_PRETRANSFORMVERTICES_PROCESS",
        "ASSIMP_BUILD_NO_LIMITBONEWEIGHTS_PROCESS",
        -- "ASSIMP_BUILD_NO_VALIDATEDS_PROCESS",
        "ASSIMP_BUILD_NO_IMPROVECACHELOCALITY_PROCESS",
        "ASSIMP_BUILD_NO_FIXINFACINGNORMALS_PROCESS",
        "ASSIMP_BUILD_NO_REMOVE_REDUNDANTMATERIALS_PROCESS",
        "ASSIMP_BUILD_NO_FINDINVALIDDATA_PROCESS",
        "ASSIMP_BUILD_NO_FINDDEGENERATES_PROCESS",
        "ASSIMP_BUILD_NO_SORTBYPTYPE_PROCESS",
        "ASSIMP_BUILD_NO_GENUVCOORDS_PROCESS",
        "ASSIMP_BUILD_NO_TRANSFORMTEXCOORDS_PROCESS",
        "ASSIMP_BUILD_NO_FINDINSTANCES_PROCESS",
        "ASSIMP_BUILD_NO_OPTIMIZEMESHES_PROCESS",
        "ASSIMP_BUILD_NO_OPTIMIZEGRAPH_PROCESS",
        "ASSIMP_BUILD_NO_SPLITBYBONECOUNT_PROCESS",
        "ASSIMP_BUILD_NO_DEBONE_PROCESS",
        "ASSIMP_BUILD_NO_EMBEDTEXTURES_PROCESS",
        "ASSIMP_BUILD_NO_GLOBALSCALE_PROCESS",
    }

    files
    {
        "include/**",
        "code/Common/Assimp.cpp",
        "code/Common/BaseImporter.cpp",
        "code/Collada/ColladaLoader.cpp",
        "code/Collada/ColladaParser.cpp",
        "code/Common/CreateAnimMesh.cpp",
        "code/Ply/PlyParser.cpp",
        "code/Ply/PlyLoader.cpp",
        "code/Common/BaseProcess.cpp",
        "code/PostProcessing/EmbedTexturesProcess.cpp",
        "code/PostProcessing/ConvertToLHProcess.cpp",
        "code/Common/DefaultIOStream.cpp",
        "code/Common/DefaultIOSystem.cpp",
        "code/Common/DefaultLogger.cpp",
        "code/PostProcessing/GenVertexNormalsProcess.cpp",
        "code/Common/Importer.cpp",
        "code/Common/ImporterRegistry.cpp",
        "code/Material/MaterialSystem.cpp",
        "code/Common/PostStepRegistry.cpp",
        "code/PostProcessing/ProcessHelper.cpp",
        "code/Common/scene.cpp",
        "code/Common/ScenePreprocessor.cpp",
        "code/PostProcessing/ScaleProcess.cpp",
        "code/Common/SGSpatialSort.cpp",
        "code/Common/SkeletonMeshBuilder.cpp",
        "code/Common/SpatialSort.cpp",
        "code/PostProcessing/TriangulateProcess.cpp",
        "code/PostProcessing/ValidateDataStructure.cpp",
        "code/Common/Version.cpp",
        "code/Common/VertexTriangleAdjacency.cpp",
        "code/Obj/ObjFileImporter.cpp",
        "code/Obj/ObjFileMtlImporter.cpp",
        "code/FBX/FBXAnimation.cpp",
        "code/FBX/FBXBinaryTokenizer.cpp",
        "code/FBX/FBXConverter.cpp",
        "code/FBX/FBXDeformer.cpp",
        "code/FBX/FBXDocument.cpp",
        "code/FBX/FBXDocumentUtil.cpp",
        "code/FBX/FBXImporter.cpp",
        "code/FBX/FBXMaterial.cpp",
        "code/FBX/FBXMeshGeometry.cpp",
        "code/FBX/FBXModel.cpp",
        "code/FBX/FBXNodeAttribute.cpp",
        "code/FBX/FBXParser.cpp",
        "code/FBX/FBXProperties.cpp",
        "code/FBX/FBXTokenizer.cpp",
        "code/FBX/FBXExporter.cpp",
        "code/FBX/FBXExportNode.cpp",
        "code/FBX/FBXExportProperty.cpp",
        "code/FBX/FBXUtil.cpp",
        "code/Obj/ObjFileParser.cpp",
        "code/glTF/glTFImporter.cpp",
        "code/glTF2/glTF2Importer.cpp",
        "code/PostProcessing/MakeVerboseFormat.cpp",
        "code/PostProcessing/CalcTangentsProcess.cpp",
        "code/PostProcessing/ScaleProcess.cpp",
        "code/PostProcessing/EmbedTexturesProcess.cpp",
        "contrib/irrXML/*",
    }

    includedirs
    {
        "include",
        "contrib/irrXML",
        "contrib/rapidjson/include",
        "code"
    }

    -- And more lines of platform-related configurations that have nothing to do

Answer 1

也许你可以查看一些你遇到LNK 2019的案例

https://docs.microsoft.com/en-us/cpp/error-messages/tool-errors/linker-tools-error-lnk2019?view=msvc-160

使用 Premake 构建 Assimp 时出现链接器错误

Linker Errors when Building Assimp with Premake

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