Tag Archives: Vscode error

VScode Error: extension failed XHR Failed (Ubuntu Virtual Machine)

[Solved] VScode Error: find_package(catkin) failed

Question:

In vscode, when using cmake for configure, I found that the CMakeLists.txt generated by catkin_init_workspace reported an error:
find_package(catkin) failed. catkin was neither found in the workspace···

analysis:

After investigation and analysis, it is found that there is a problem with the following code in CMakeLists.txt:

# use command ‘catkin_init_workspace’  to generate ‘CMakeLists.txt’
set(catkin_search_path "")
  foreach(path ${CMAKE_PREFIX_PATH})
    if(EXISTS "${path}/.catkin")
      list(FIND catkin_search_path ${path} _index)
      if(_index EQUAL -1)
        list(APPEND catkin_search_path ${path})
      endif()
    endif()
  endforeach()

Specifically, the path from the variable ${CMAKE_PREFIX_PATH} is not searched for .catkin.
By directly modifying the /opt/ros/melodic/share/catkin/cmake/toplevel.cmake print variable ${CMAKE_PREFIX_PATH} pointed to by CMakeLists.txt, the output was found to be empty.
However, the configure in the system terminal works, and the command executed is the same as the configure in vscde, as follows

# The actual command executed when configure with cmake-tool in vscode
/usr/bin/cmake \
--no-warn-unused-cli \
-DCMAKE_PREFIX_PATH=/opt/ros/melodic \
-DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE:STRING=Release \
-DCMAKE_C_COMPILER:FILEPATH=/usr/bin/x86_64-linux-gnu-gcc-7 \
-DCMAKE_CXX_COMPILER:FILEPATH=/usr/bin/x86_64-linux-gnu-g++-7 \
-S/home/will/allpros/avp_slam_sim \
-B/home/will/allpros/avp_slam_sim/build_vsc \
-G "Unix Makefiles"

Also, even if you add export CMAKE_PREFIX_PATH=/opt/ros/melodic:$CMAKE_PREFIX_PATH to ~/.bashrc, you will still get an error after restarting the computer and doing configure, where the path /opt/ros/melodic was determined when installing ros Of course, you can also use the command find / -iname *.catkin or locate *.catkin to find the specific path.
To summarize.
The reason for this is unclear. It is suspected that the environment variable ${CMAKE_PREFIX_PATH} obtained by vscode during cmake-configure is empty, but when using the system terminal ${CMAKE_PREFIX_PATH} has the value /opt/ros/melodic, which comes from the source /opt/ros/melodic at boot time. source /opt/ros/melodic/setup.bash, which is already written in the ~/.bashrc auto-execution file when we installed ROS, and after booting, echo $CMAKE_PREFIX_PATH in system terminal can output /opt/ros/melodic normally. .

Solution:
1. modify the system file directly

$ sudo gedit /opt/ros/melodic/share/catkin/cmake/toplevel.cmake

Add the following in /opt/ros/melodic/share/catkin/cmake/toplevel.cmake

list(APPEND CMAKE_PREFIX_PATH "/opt/ros/melodic")

The results are as follows:

# toplevel CMakeLists.txt for a catkin workspace
# catkin/cmake/toplevel.cmake

cmake_minimum_required(VERSION 3.0.2)

project(Project)

set(CATKIN_TOPLEVEL TRUE)

list(APPEND CMAKE_PREFIX_PATH "/opt/ros/melodic")

# search for catkin within the workspace
set(_cmd "catkin_find_pkg" "catkin" "${CMAKE_SOURCE_DIR}")
execute_process(COMMAND ${_cmd}
  RESULT_VARIABLE _res
  OUTPUT_VARIABLE _out
  ERROR_VARIABLE _err
  OUTPUT_STRIP_TRAILING_WHITESPACE
  ERROR_STRIP_TRAILING_WHITESPACE
)
...
...
...

2. add attribute in cmake setting of vscode

Ctrl+Shift+P –> preferences: open settings (JSON)
add:

"cmake.configureArgs": [
        "-DCMAKE_PREFIX_PATH=/opt/ros/melodic"
    ],

[Solved] VScode Error: build constraints exclude all Go files in syscall\js

When developing golang webassembly in vscode, an error is reported when importing the package. The code is as follows:

// main.go
package main

import "syscall/js"

func main() {
	alert := js.Global().Get("alert")
	alert.Invoke("Hello World!")
}

The error information is as follows:

could not import syscall/js (cannot find package "syscall/js" in any of 
	E:\Go\src\syscall\js (from $GOROOT)
	F:\go\Gopath\src\syscall\js (from $GOPATH))
error while importing syscall/js: build constraints exclude all Go files in E:\Go\src\syscall\js

The solution is as follows:

Open setting and enter go tools env

Open settings.JSON file, write in the file:

{
  "go.toolsEnvVars": {
    "GOOS":"js",
    "GOARCH":"wasm"
  }
}

Then reopen vscode.

VSCode Error: collect2.exe: error: ld returned 1 exit status

error can not generate the compiled file, probably because the same name it.
delete the previously generated .exe, and then in the current .cpp file page, press the key combination Ctrl+Shift+B to regenerate it, no error reported.

VSCode Error: collect2.exe:error:1d returned 1 exit status [How to Solve]

Recently, I learned the C + + program video of dark horse. When I realized the employee management system based on polymorphism, I knocked the same code as the video, but I couldn’t compile it successfully by using vscode, and the following errors occurred:

[Employee_Management_System.cpp 2021-10-22 13:58:17.099]
,,C:\Users\AAE3~1\AppData\Local\Temp\cc7ZdaG7.o:Employee_Management_System.cpp:(.text+0x1b): undefined reference to `WorkerManager::WorkerManager()'
C:\Users\AAE3~1\AppData\Local\Temp\cc7ZdaG7.o:Employee_Management_System.cpp:(.text+0x27): undefined reference to `WorkerManager::Show_Menu()'
C:\Users\AAE3~1\AppData\Local\Temp\cc7ZdaG7.o:Employee_Management_System.cpp:(.text+0x44): undefined reference to `WorkerManager::~WorkerManager()'
C:\Users\AAE3~1\AppData\Local\Temp\cc7ZdaG7.o:Employee_Management_System.cpp:(.text+0x57): undefined reference to `WorkerManager::~WorkerManager()'
collect2.exe: error: ld returned 1 exit status

After querying many blogs, it is found that the causes and solutions of errors such as collect.exe: error: 1D returned 1 exit status are as follows
1. The last compiled program is not closed, that is, the black box still exists. Find it and close or restart the IDE
2. The program has no main function or the main function is misspelled
3. Running in vscode will not help you save the code. You need to save the code before running
4. The file name and file path may cause errors in some compilers
5. There is an undefined reference. This is the case for this error. When instantiating the classes of other files in the main function, you need to define the .H file and .Cpp file of other classes to solve the problem.

#include<iostream>
#include"workerManager.h"
#include"workerManager.cpp"

[Solved] Vscode Error: “export ‘default‘ (imported as ‘VueRouter‘) was not found in ‘vue-router‘

import Vue from 'vue'
import VueRouter from 'vue-router'

const Home = () => import('../views/home/Home')
const Category = () => import('../views/category/Category')
const Cart = () => import('../views/cart/Cart')
const Profile = () => import('../views/profile/Profile')

Vue.use(VueRouter)

const routes = [
    {
        Path: '',
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home
    },
    {
        path: '/category',
        component: Category
    },
    {
        path: '/cart',
        component: Cart
    },
    {
        path: '/profile',
        component: Profile
    }
]

const router = new VueRouter({
    routes,
    mode: 'history'
})

export default router

There is no problem with using vue2 and vue3 in this code, but we are now vue4, and many things have changed. For example, for this routing problem, the error reported in the vscode terminal is: “export ‘default’ (imported as’ vuerouter ‘) was not found in’ Vue router ‘

The result of Baidu translation is that the default value of “export” cannot be found in “Vue router” (imported as “vuerouter”)

The errors reported in the browser are: Uncaught TypeError: Cannot read property ‘use’ of undefined

The result of Baidu translation is: uncapped typeerror: the undefined attribute “use” cannot be read

Let’s go to the terminal first. The main keys are “vuerouter” and “Vue router”, which we have imported and installed here

Then the problem may not be here. Next, let’s look at the problem on the browser. Its key is “use”. According to our understanding, “use” should be a function defined in Vue. Then we press and hold Ctrl and left click in vscode to find its definition. The result is no response, so the problem may appear here, We can also go to the folder and look for it. Here I provide vue2 and the folder where we have problems

This is vue2’s

This is a problem

If you have an idea, you can also look in the two imported files. There is no definition, which is the reason for the error. The solution is to use another method to use routing.

import {createRouter, createWebHistory} from "vue-router";

const Home = () => import('../views/home/Home')
const Category = () => import('../views/category/Category')
const Cart = () => import('../views/cart/Cart')
const Profile = () => import('../views/profile/Profile')

const routes = [
    {
        Path: '',
        redirect: '/home'
    },
    {
        path: '/home',
        component: Home
    },
    {
        path: '/category',
        component: Category
    },
    {
        path: '/cart',
        component: Cart
    },
    {
        path: '/profile',
        component: Profile
    }
]

const router = createRouter({
    history: createWebHistory(),
    routes
})

export default router

This level is solved.

Vscode modifier error resolution

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