collect2.exe: error: ld returned 5 exit status

Question

我最近更新了所有 msys2 包，现在我无法构建我的项目。链接 .dll 之一时发生错误 - target_library.dll.

我不清楚错误消息。状态 5 是什么意思？

collect2.exe: error: ld returned 5 exit status

完整消息：

g++ -Wl,-s,--relax,--gc-sections -shared -Wl,-subsystem,windows -mthreads -Wl,--out-implib,C:/msys64/workspace/Project_Root_Directory/project/src/../build/release/plugins/libtarget_library.dll.a -o ../../../../build/release/plugins/target_library.dll object_script.target_library.Release  -lglu32 -lopengl32 -luser32 -LC:/msys64/workspace/Project_Root_Directory/project/build/release -LC:/msys64/workspace/Project_Root_Directory/project/third-party/out/lib -LC:/msys64/workspace/Project_Root_Directory/project/deps/lib -lexif -ldecimal -lsqlite3 -lutils -LC:/Python35/libs -lpython35 -lkmlbase -lkmlengine -lkmldom -lkmlxsd -lminizip -luriparser -lkmlconvenience -lcore -lrender -lraster -lgui -LC:/msys64/workspace/Project_Root_Directory/project/deps/lib/target_library/win64 -LC:/msys64/mingw64/lib  C:/msys64/mingw64/lib/libQt5Widgets.dll.a C:/msys64/mingw64/lib/libQt5WinExtras.dll.a C:/msys64/mingw64/lib/libQt5Gui.dll.a C:/msys64/mingw64/lib/libQt5Network.dll.a C:/msys64/mingw64/lib/libQt5Concurrent.dll.a C:/msys64/mingw64/lib/libQt5Xml.dll.a C:/msys64/mingw64/lib/libQt5Core.dll.a

collect2.exe: error: ld returned 5 exit status
make[4]: *** [Makefile.Release:159: ../../../../build/release/plugins/target_library.dll] Error 1
make[4]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins/target_library'
make[3]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins/target_library'
make[2]: *** [Makefile:384: sub-target_library-make_first] Error 2
make[2]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules/plugins'
make[1]: *** [Makefile:297: sub-plugins-make_first] Error 2
make[1]: Leaving directory '/workspace/Project_Root_Directory/project/src/modules'
make: *** [Makefile:44: sub-modules-make_first] Error 2

gcc 7.1.0、Qt5 5.9.1、qmake、Win7 x64

Answer 1

我遇到了同样的问题。我 link 我的项目有静态库。 mingw64 升级后，我的项目停止构建并出现同样的错误。我发现调试版本构建成功。所以我比较了 linker 标志。在发行版 Qt 中添加此标志“-Wl,-s,--relax,--gc-section”。我找不到关于“-s”标志的任何信息，但由于 this link 我发现 -gc-section 标志是失败的原因。我将以下代码添加到我的 .pro 文件中，它起作用了

mingw {
        contains(QT_ARCH, x86_64): {
            LIBS+=-Wl,--no-gc-sections
        }
}

Answer 2

以防万一有人发现这是由于同样的问题，请将以下标志添加到您的编译器 -Wl,--verbose（或 --verbose 到链接器）。这将显示未找到哪个库或为您提供有关该问题的更多信息。

collect2.exe: error: ld returned 5 exit status

collect2.exe: error: ld returned 5 exit status

c++

dll

qt5

msys2