Premake5中ImGui、GLFW、GLEW链接失败（LNK2019/LNK2001）求助

你的LNK2019/LNK2001错误核心原因是依赖库的项目配置缺失关键源码文件，导致编译出的静态库为空或缺少必要实现，无法提供OpenGL函数的定义。以下是具体问题和修复后的配置：

1. GLEW项目：缺失源码文件，未定义静态库宏 #

当前GLEW配置只包含头文件，没有编译核心源码，且未声明使用静态库，导致无法生成包含OpenGL函数实现的静态库。

修正后的premake5.lua (GLEW)：

project "GLEW"
    kind "StaticLib"
    language "C"

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

    files {
        "include/GL/*.h",
        "src/glew.c",
        "premake5.lua"
    }

    defines { "GLEW_STATIC" }

    filter "configurations:Debug"
        runtime "Debug"
        symbols "on"

    filter "configurations:Release"
        runtime "Release"
        optimize "on"

2. GLFW项目：缺失源码文件 #

GLFW配置仅包含头文件，未编译其窗口管理的核心源码，生成的静态库无实际功能。

修正后的premake5.lua (GLFW)：

project "GLFW"
    kind "StaticLib"
    language "C"

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

    files {
        "include/**.h",
        "src/*.c",
        "src/win32/*.c",
        "premake5.lua"
    }

    defines { "_GLFW_WIN32", "_GLFW_USE_OPENGL", "_GLFW_USE_WGL" }

    filter "configurations:Debug"
        runtime "Debug"
        symbols "on"

    filter "configurations:Release"
        runtime "Release"
        optimize "on"

3. ImGui项目：缺失GLFW/OpenGL后端绑定 #

ImGui仅编译了核心库，未包含与GLFW窗口、OpenGL渲染交互的后端实现，无法调用OpenGL函数完成渲染。

修正后的premake5.lua (ImGui)：

project "ImGui"
    kind "StaticLib"
    language "C++"
    cppdialect "C++17"

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

    files {
        "imconfig.h",
        "imgui.h",
        "imgui.cpp",
        "imgui_draw.cpp",
        "imgui_internal.h",
        "imgui_widgets.cpp",
        "imgui_tables.cpp",
        "imstb_rectpack.h",
        "imstb_textedit.h",
        "imstb_truetype.h",
        "imgui_demo.cpp",
        "backends/imgui_impl_glfw.h",
        "backends/imgui_impl_glfw.cpp",
        "backends/imgui_impl_opengl3.h",
        "backends/imgui_impl_opengl3.cpp",
        "premake5.lua"
    }

    includedirs {
        "../glfw/include",
        "../glew/include"
    }

    filter "configurations:Debug"
        runtime "Debug"
        symbols "on"

    filter "configurations:Release"
        runtime "Release"
        optimize "on"

4. MyApp项目：修复路径与依赖配置 #

• 将outputdir移到workspace级别，确保子项目能正确访问输出路径
• 移除手动指定的预编译GLEW库目录，依赖Premake自动链接子项目编译的库
• 确保平台（Win32/Win64）与编译的库匹配

修正后的premake5.lua (MyApp)：

workspace "MyApp"
    configurations { "Debug", "Release" }
    platforms { "Win32", "Win64" }
    outputdir = "%{cfg.buildcfg}/%{cfg.platform}"

project "MyApp"
    kind "ConsoleApp"
    language "C++"
    cppdialect "C++17"

    targetdir ("bin/" .. outputdir)
    objdir ("obj/" .. outputdir)

    IMGUI_LIB = "lib/imgui"
    IMGUI_LIB_BE = IMGUI_LIB .. "/backends"

    files {
        "src/**.h",
        "src/**.cpp",
        "premake5.lua"
    }

    includedirs {
        IMGUI_LIB,
        IMGUI_LIB_BE,
        "lib/glm",
        "lib/glew/include",
        "lib/glfw/include"
    }

    include "lib/imgui"
    include "lib/glfw"
    include "lib/glew"

    links { "opengl32", "GLEW", "GLFW", "ImGui" }

    filter "configurations:Debug"
        defines { "DEBUG", "GLEW_STATIC" }
        symbols "On"

    filter "configurations:Release"
        defines { "NDEBUG", "GLEW_STATIC" }
        optimize "On"

    filter "platforms:Win64"
        system "Windows"
        architecture "x86_64"

    filter "platforms:Win32"
        system "Windows"
        architecture "x86"

额外注意事项 #

• 确保所有子项目的目录结构与配置中的路径一致
• 清理之前编译的空静态库，重新执行premake5 vs2022生成解决方案后全量编译
• 检查主项目中是否在GLFW窗口创建后正确调用glewInit()初始化GLEW

内容的提问来源于stack exchange，提问作者Síofra