Question

这是我的task.json，为什么当我尝试使用GCC执行时构建失败？

{
"version": "2.0.0",
"tasks": [
    {
        "type": "shell",
        "label": "C/C++: g++.exe build active file",
        "command": "C:\\MinGW\\bin\\g++.exe",
        "args": [
            "-g",
            "${file}",
            "-o",
            "${fileDirname}\\${fileBasenameNoExtension}.exe"
        ],
        "options": {
            "cwd": "C:\\MinGW\\bin"
        },
        "problemMatcher": [
            "$gcc"
        ],
        "group": {
            "kind": "build",
            "isDefault": true
        }
    }
]

}

这是我在终端中键入“ gcc helloworld.exe”时的输出

> C:\Users\Administrator\projects\helloworld>gcc helloworld.exe
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: DWARF error: could not find abbrev number 3874
helloworld.exe:cygming-crtbegin.c:(.text+0x290): multiple definition of `_mingw32_init_mainargs'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.text+0x290): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x2d0): multiple definition of `mainCRTStartup'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.text+0x2d0): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x2f0): multiple definition of `WinMainCRTStartup'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.text+0x2f0): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x310): multiple definition of `atexit'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.text+0x310): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x320): multiple definition of `_onexit'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.text+0x320): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x330): multiple definition of `__gcc_register_frame'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/crtbegin.o:cygming-crtbegin.c:(.text+0x0): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.text+0x3e0): multiple definition of `__gcc_deregister_frame'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/crtbegin.o:cygming-crtbegin.c:(.text+0xb0): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.bss+0x4): multiple definition of `_argc'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.bss+0x4): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.bss+0x0): multiple definition of `_argv'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../crt2.o:(.bss+0x0): first defined here
c:/mingw/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: helloworld.exe:cygming-crtbegin.c:(.eh_frame+0xc8): multiple definition of `__EH_FRAME_BEGIN__'; c:/mingw/bin/../lib/gcc/mingw32/9.2.0/crtbegin.o:cygming-crtbegin.c:(.eh_frame+0x0): first defined here
collect2.exe: error: ld returned 1 exit status

评论中有解决方案，谢谢大家的帮助！

Answer 1

要编译C程序，命令是

gcc -g -o helloworld.exe -Wall helloworld.c

-g启用调试
-o helloworld.exe将可执行文件放入helloworld.exe
-Wall启用所有警告
helloworld.c在helloworld.c

您的命令正在尝试“编译”您希望编译器生成的文件。我不知道这是否会产生您所看到的错误，但这当然是不正确的。

Answer 2

好的，我找到了某种解决方案。

我相信当我打算执行该文件时，我已经尝试在完成编译之后再次进行编译。

所以我将代码切换到c并在终端中使用以下代码进行编译：

gcc -g -o helloworld.exe -Wall hiworld.c

然后执行我使用的新exe：

.\helloworld.exe

thanks for the help!

使用task.json和GCC在C中进行编译？

2 个答案: