qt compile error: symbol(s) not found for architecture x86_64

Question

正在尝试使用 Qt 5.4 clang 64 位在 mac 上编译程序。该程序包括使用 Opal Kelly .dylib 文件和头文件与通过 USB 连接的 FPGA 通信。该程序在 windows 上使用 windows 版本的 .dylib (.dll) 和 windows 头文件编译得很好，但是在 mac 上我在尝试编译时遇到以下错误:

:-1: error: symbol(s) not found for architecture x86_64

编译器输出为：

Undefined symbols for architecture x86_64:
  "_okFrontPanelDLL_LoadLib", referenced from:
      MainWindow::AllocateMemory() in ProcessingFunctions.o
  "_okFrontPanelManager_Destruct", referenced from:
      OpalKelly::FrontPanelManager::~FrontPanelManager() in main.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in fpga.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in graphing.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in FPGAScanner.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in ProcessingFunctions.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in mainwindow.o
      OpalKelly::FrontPanelManager::~FrontPanelManager() in moc_mainwindow.o
      ...
  "_okFrontPanel_ConfigureFPGA", referenced from:
      OpalKellyLegacy::okCFrontPanel::ConfigureFPGA(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) in mainwindow.o
  "_okFrontPanel_Construct", referenced from:
      OpalKellyLegacy::okCFrontPanel::okCFrontPanel() in ProcessingFunctions.o
  "_okFrontPanel_Destruct", referenced from:
      OpalKellyLegacy::okCFrontPanel::~okCFrontPanel() in mainwindow.o
  "_okFrontPanel_GetDeviceCount", referenced from:
      OpalKellyLegacy::okCFrontPanel::GetDeviceCount() in ProcessingFunctions.o
  "_okFrontPanel_GetDeviceID", referenced from:
      OpalKellyLegacy::okCFrontPanel::GetDeviceID() in ProcessingFunctions.o
  "_okFrontPanel_GetSerialNumber", referenced from:
      OpalKellyLegacy::okCFrontPanel::GetSerialNumber() in ProcessingFunctions.o
  "_okFrontPanel_GetWireOutValue", referenced from:
      OpalKellyLegacy::okCFrontPanel::GetWireOutValue(int) in FPGAScanner.o
  "_okFrontPanel_IsFrontPanelEnabled", referenced from:
      OpalKellyLegacy::okCFrontPanel::IsFrontPanelEnabled() in ProcessingFunctions.o
  "_okFrontPanel_LoadDefaultPLLConfiguration", referenced from:
      OpalKellyLegacy::okCFrontPanel::LoadDefaultPLLConfiguration() in mainwindow.o
  "_okFrontPanel_OpenBySerial", referenced from:
      OpalKellyLegacy::okCFrontPanel::OpenBySerial(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) in ProcessingFunctions.o
  "_okFrontPanel_ReadFromPipeOut", referenced from:
      OpalKellyLegacy::okCFrontPanel::ReadFromPipeOut(int, long, unsigned char*) in FPGAScanner.o
  "_okFrontPanel_SetWireInValue", referenced from:
      OpalKellyLegacy::okCFrontPanel::SetWireInValue(int, unsigned int, unsigned int) in fpga.o
      OpalKellyLegacy::okCFrontPanel::SetWireInValue(int, unsigned int, unsigned int) in FPGAScanner.o
  "_okFrontPanel_UpdateWireIns", referenced from:
      OpalKellyLegacy::okCFrontPanel::UpdateWireIns() in fpga.o
      OpalKellyLegacy::okCFrontPanel::UpdateWireIns() in FPGAScanner.o
  "_okFrontPanel_UpdateWireOuts", referenced from:
      OpalKellyLegacy::okCFrontPanel::UpdateWireOuts() in FPGAScanner.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [AFE-MP-512.app/Contents/MacOS/AFE-MP-512] Error 1
13:38:18: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project AFE (kit: Clone of Desktop Qt 5.4.0 clang 32bit)
When executing step "Make"
13:38:18: Elapsed time: 00:31.

我知道当头文件中有 SLOT 或函数未被使用时会发生这种错误，但是我不知道如何找到导致问题的原因。

Opal Kelly 头文件位于 here。

非常感谢任何帮助，如果您需要更多信息，请告诉我！

Answer 1

表示存在以下问题：

当你应该 link 64 位
链接器找不到库
或者库中不存在所需的符号。

您可以查看编译器和 linker 选项以确保正在 linked 库。使用 nm 或 string 确保库中存在函数。

Answer 2

The program includes using Opal Kelly .dylib files and header files to talk to an FPGA connected through USB.... Undefined symbol for std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >...

__1 表示您正在使用 LLVM C++ 运行时 (libc++)。在某个地方，您可能正在混合和匹配 GNU C++ 运行时 (libstdc++)。 GNU C++ 运行时 (libstdc++) 缺少符号中的 __1。

您应该检查项目和所有预构建的库，并确保它们正在使用一个或另一个。对于每个，您应该使用 (1) -stdlib=libc++ (LLVM) 或 (2) -stdlib=libstdc++ (GNU) 中的 CXXFLAGS。

请注意，像 Xcode 这样的 IDE 可能使用与像 Opal Kelly 这样的库不同的 -stdlib=... 设置。在这种情况下，让 Xcode 匹配 Opal Kelly 库，或重建 Opal Kelly 库以匹配 Xcode.

如果有兴趣，__1 是用于版本控制的内联命名空间。参见 What are inline namespaces for? and 。

Answer 3

iphonesimulator:

CONFIG(iphonesimulator, iphoneos | iphonesimulator)
QMAKE_APPLE_SIMULATOR_ARCHS = x86_64 #i386 for 32bit

iphoneos:

CONFIG(iphoneos, iphoneos | iphonesimulator)

qt compile error: symbol(s) not found for architecture x86_64

qt compile error: symbol(s) not found for architecture x86_64

c++

macos

qt

compiler-errors