在Code::Blocks中编译raylib程序时遇链接错误求助

我在Code::Blocks中配置raylib库，编译时出现大量未定义引用的链接错误，错误信息如下：

-------------- Build: Debug in teste (compiler: GNU GCC Compiler)---------------

gcc.exe -LC:\Users\tiago\Documents\raylib -o bin\Debug\teste.exe obj\Debug\main.o   C:\Users\tiago\Documents\raylib\libraylib.a
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rcore.o):rcore.c:(.text+0x16ba2): undefined reference to `timeEndPeriod@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rcore.o):rcore.c:(.text+0x1c8cb): undefined reference to `timeBeginPeriod@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x18e3): undefined reference to `_imp__CreateRectRgn@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x1927): undefined reference to `_imp__DeleteObject@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x198c): undefined reference to `_imp__SwapBuffers@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x245d): undefined reference to `_imp__GetDeviceCaps@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x2b3a): undefined reference to `_imp__CreateDCW@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x2b50): undefined reference to `_imp__GetDeviceGammaRamp@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x2b5c): undefined reference to `_imp__DeleteDC@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x65b6): undefined reference to `_imp__CreateDCW@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x65ef): undefined reference to `_imp__GetDeviceCaps@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x661d): undefined reference to `_imp__DeleteDC@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x67ba): undefined reference to `_imp__GetDeviceCaps@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x6a5f): undefined reference to `_imp__CreateDIBSection@24'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x6aaa): undefined reference to `_imp__CreateBitmap@20'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x6b44): undefined reference to `_imp__DeleteObject@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x6b97): undefined reference to `_imp__DeleteObject@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x8574): undefined reference to `_imp__CreateDCW@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x8586): undefined reference to `_imp__SetDeviceGammaRamp@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0x8592): undefined reference to `_imp__DeleteDC@4'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xe947): undefined reference to `_imp__ChoosePixelFormat@8'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xe95b): undefined reference to `_imp__SetPixelFormat@12'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xedf2): undefined reference to `_imp__DescribePixelFormat@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xeee5): undefined reference to `_imp__DescribePixelFormat@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xf2ff): undefined reference to `_imp__DescribePixelFormat@16'
C:\MinGW\bin/ld.exe: C:\Users\tiago\Documents\raylib\libraylib.a(rglfw.o):rglfw.c:(.text+0xf32a): undefined reference to `_imp__SetPixelFormat@12'
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 0 second(s))
27 error(s), 0 warning(s) (0 minute(s), 0 second(s))

解决方案 #

这些未定义的函数都属于Windows系统库，需要在链接时显式指定依赖：

1. 打开Code::Blocks，点击顶部菜单栏的Project -> Build options
2. 在左侧列表选中你的项目，切换到Linker settings标签页
3. 在Other linker options输入框中添加以下内容：

   -lgdi32 -lwinmm -luser32
   

4. 点击OK保存设置，重新编译项目

说明 #

• timeBeginPeriod/timeEndPeriod属于winmm.lib（多媒体定时库）
• CreateRectRgn/SwapBuffers/GetDeviceCaps等图形相关函数属于gdi32.lib（图形设备接口库）
• 部分用户界面相关函数属于user32.lib

内容的提问来源于stack exchange，提问作者Albino Almeida