c++ - uwebsockets 无法启动：libuv.c:-1: 错误：未定义对 `uv_is_closing' 的引用

Question

我的项目已经链接了 uwebsockets。 链接库：

C:/Users/Sunway/.conan/data/zlib/1.2.11/_/_/package/a955db98e980a5ab86ae50d6df8bfee361185c27/lib/libzlib.a;
C:/Users/Sunway/.conan/data/libuv/1.41.0/_/_/package/a955db98e980a5ab86ae50d6df8bfee361185c27/lib/libuv_a.a;
C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a;
iphlpapi.dll;psapi.dll;userenv.dll;ws2_32.dll

主文件

#include "main.h"

int main()
{
  uWS::App().get("/hello", [](auto *res, auto *req) {
      res->end("Hello");
    });
  std::cout << "exiting now!" << std::endl;
  return 0;
}

我有错误

libuv.c:-1: error: undefined reference to `uv_is_closing'
libuv.c:-1: error: undefined reference to `uv_poll_init_socket'
……

35 个函数未定义，但我不能直接在 main.cpp 中调用这些函数。

操作系统：Windows10 x64

IDE：QtCreator4.14.2

编译器：MinGW 32 位

充满错误日志

11:04:53: 为项目rfid-cmd执行步骤... 11:04:53: 正在启动 "C:\Qt\Tools\CMake_64\bin\cmake.exe" --build . --目标全部

[1/1 0.3/sec] 链接 CXX 可执行文件 rfid-cmd.exe 失败：rfid-cmd.exe cmd.exe /C "cd . && C:\Qt\Tools\mingw810_32\bin\g++.exe -g CMakeFiles/ rfid-cmd.dir/main.cpp.obj -o rfid-cmd.exe -Wl,--out-imlib,librfid-cmd.dll.a -Wl,--major-image-version,0,--minor -image-version,0 -LD:/Project/misc/qt/rfid-cmd/lib -LD:/Project/misc/qt/rfid-cmd/lib/NFC9 -lReader -lEasyUSB214x C:/Users/Sunway/。 conan/data/zlib/1.2.11 ///package/a955db98e980a5ab86ae50d6df8bfee361185c27/lib / libzlib.a C:/Users/Sunway/.conan/data/libuv/1.41.0///package /a955db98e980a5ab86ae50d6df8bfee361185c27/ libuv_a /。 C : /Users/Sunway/.conan/data/usockets/0.7.1///package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a -liphlpapi -lpsapi -luserenv -lws2_32 -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32/&/. conan/data/usockets/0.7.1 ///package / c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a( libuv.o):libuv.c:(.text+0xce): undefined reference to uv_is_closing' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x143): undefined reference to uv_poll_init_socket' C:/Users/Sunway/ .conan/data/usockets/0.7.1//package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/ libuSockets.a( libuv.o):libuv.c:(.text+0x1ee): 未定义对uv_poll_stop' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x2c9): undefined reference to uv_prepare_init' C:/Users/Sunway的引用/.conan/data/usockets/0.7.1/ //package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x2dc): undefined reference to uv_prepare_start' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x2e7): undefined reference to uv_unref' C:/Users/Sunway/.conan/data/usockets/0.7.1/ //package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x30a) : undefined reference to uv_check_init' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x315): undefined reference to uv_unref' C:/Users/Sunway/.conan/data/usockets/0.7.1 ///package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x328 ) : undefined reference to uv_check_start' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x371): undefined reference to uv_loop_new' C:/Users/Sunway/.conan/data/usockets/0.7。 1 ///package / c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(. text+0x38f): undefined reference to uv_ref' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x39a): undefined reference to uv_prepare_stop' C:/Users/Sunway/.conan/data/usockets/0.7 .1///package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x3af) : undefined reference to uv_close' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x3ba): undefined reference to uv_ref' C:/Users/Sunway/.conan/data/usockets/0.7.1 ///package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x3c5 ) : undefined reference to uv_check_stop' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x3da): undefined reference to uv_close' C:/Users/Sunway/.conan/data/usockets/0.7。 1 ///package / c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(. text+0x40f): undefined reference to uv_run' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x41a): undefined reference to uv_loop_delete' C:/Users/Sunway/.conan/data/usockets/0.7 .1 ///package / c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(. text+0x44f): 未定义引用uv_run' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x4f3): undefined reference to uv_timer_init' C:/Users/Sunway/.conan/data/usockets/0.7.1/ / /package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x514): 未定义引用to uv_unref' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x550): undefined reference to uv_ref' C:/Users/Sunway/.conan/data/usockets/0.7.1/ / /package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x558): 未定义参考uv_timer_stop' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x56b): undefined reference to uv_close' C:/Users/Sunway/.conan/data/usockets/0.7.1/ /package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x5d2 ): undefined reference to uv_timer_start' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x620): undefined reference to uv_ref' C:/Users/Sunway/.conan/data/usockets/0.7.1/ //package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x633): undefined reference to uv_close' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x669): undefined reference to uv_async_init' C:/Users/Sunway/.conan/data/usockets/0.7.1/ //package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x671) : undefined reference to uv_unref' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x15f): undefined reference to uv_poll_start' C:/Users/Sunway/.conan/data/usockets/0.7.1 ///package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x1cf ) : undefined reference to uv_poll_start' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x20b): undefined reference to uv_close' C:/Users/Sunway/.conan/data/usockets/0.7。 1 ///package / c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(. text+0x5a7): 未定义引用uv_timer_stop' C:/Users/Sunway/.conan/data/usockets/0.7.1/_/_/package/c8f7ac6f549a378a4f5ea4f08b4f33a70398fa20/lib/libuSockets.a(libuv.o):libuv.c:(.text+0x686): undefined reference to uv_async_send' collect2.exe：错误：ld 返回 1 退出状态 ninja：构建停止：子命令失败。11:04:58: 进程"C:\Qt\Tools\CMake_64\bin\cmake.exe"退出，退出代码 1 . Error while building/deploying project rfid-cmd (kit: Desktop Qt 5.15.2 MinGW 32-bit ) 执行步骤“Build”时 11:04:58：经过时间：00:05。

Answer 1

有链接顺序问题吗？我看到usockets后面的链接libuv，也许我们可以尝试交换序列：先链接usockets。

您正在使用静态链接，并且usockets依赖于libuv，因此交换序列将解决问题。

相关问题：

为什么链接库的顺序有时会导致 GCC 出错？