带有 mingw-w64 的 SDL2 - 链接器找到 libSDL2.a,但抛出"undefined reference"错误
SDL2 with mingw-w64 - linker finds libSDL2.a but throws "undefined reference" errors
尽管根据-Xlinker --verbose
,链接器识别(并使用(libSDL2.a
,但我使用的每个 SDL 函数都被 ld.exe
报告为"未定义的引用"。这是我调用的链接器命令行:
x86_64-w64-mingw32-g++.exe -L./Client/deps/SDL2/x86_64-w64-mingw32/lib -lgdi32 -lSDL2main -lSDL2 ./Client/deps/gl3w/obj/windows/x86_64/release/gl3w.o ./Client/build/output/o/windows/x86_64/dev/GVGLObjects.cpp.o ./Client/build/output/o/windows/x86_64/dev/GVRenderer.cpp.o ./Client/build/output/o/windows/x86_64/dev/GVWorldObjects.cpp.o
./Client/build/output/o/windows/x86_64/dev/main.cpp.o -o ./Client/build/output/exe/windows/x86_64/dev/GemVerse.exe
如您所见,我使用正确的库版本(x86_64
库,x86_64
编译器(。 nm
找到所有函数,因此静态库文件非常好。顺便说一句,我不使用 SDL_main
,因此它不在列表中。
那么,为什么ld
找不到 SDL 功能呢?
根据 Keltar 的评论和 HolyBlackCat 的评论,我将静态库放在目标文件之后,并添加了更多库(以及删除-lSDLmain
(,库列表变为:
-lSDL2 -lgdi32 -lole32 -loleaut32 -lmingw32 -limm32 -lwinmm -lversion -lSetupAPI
所以最后的命令行是:
PS> 86_64-w64-mingw32-g++.exe -L./Client/deps/SDL2/x86_64-w64-mingw32/lib ./Client/deps/gl3w/obj/windows/x86_64/release/gl3w.o ./Client/build/output/o/windows/x86_64/dev/GVGLObjects.cpp.o ./Client/build/output/o/windows/x86_64/dev/GVRenderer.cpp.o ./Client/build/output/o/windows/x86_64/dev/GVWorldObjects.cpp.o
./Client/build/output/o/windows/x86_64/dev/main.cpp.o -lSDL2 -lgdi32 -lole32 -loleaut32 -lmingw32 -limm32 -lwinmm -lversion -lSetupAPI -o ./Client/build/output/exe/windows/x86_64/dev/GemVerse.exe
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