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[MinGW] Fix [Linker error] undefined reference to '_imp__curl_easy_init'

Recently, I found some error during the compiling progress of my curl program with Code::Blocks. The error keep showing in Code::Blocks like this: [Linker error] undefined reference to `_imp__curl_easy_init' I try to repair the Linker settings and Search directories but found out that there’s nothing wrong with it. It turns out the MinGW version has been modified to Win64 version last time when I was trying to deal with some W64 programs few days ago. I found that the MinGW download directly from the official website cannot be used in Code::Block properly. Hence, I use tdm-gcc instead . Here’s the procedure to fix the curl reference error. Download the tdm32 bundle from: http://tdm-gcc.tdragon.net/ Install MinGW/TDM(32-bit) by just clicking Next in the next few steps After the installation process, the MinGW will be installed under C:\TDM-GCC-32 Open your Code::Blocks program and go to Settings>Compiler Change the setting as followed Now th...
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[LAMP] How to install Apache on windows system

Apache is a popular platform to establish website on your local machine. In this tutorial, we are going to demonstrate how to setup Apache 2.4 on Windows 7 system. First, Go to the Apache Lounge website Download both: 1. the latest C++ Redistributable Visual Studio 2017 and 2. Apache *.zip files for your operation system (For me is Win64 version) Unzip the file after downloaded and put the Apache24 folder to the location of C:\ Run the CMD.ext as Administrator and change the direction to the folder of C:\Apache24\bin Type in httpd.exe -k install Go to the folder of C**:\Apache24\bin** and double click on ApacheMonitor.exe You can see the Apache 2.4 server with green light if the server has been started properly. Type in localhost in your browser address. If the Apache works properly. You can see a web page displayed in your browser. This is the first step to start up your own website with Apache! Uninstall Type in these code with the admin...

[pi] Headless pi connection with VNC on Mac system

Sometimes we have to access our pi with limited resources like lacking of monitor or keyboard. The Headless mode is useful to connect to your pi with another computer or your laptop without additional screen! Now let’s get started to give it a try! Setting Raspberry pi board Connection to pi connect to raspberry pi board with ssh pi@rapberrypi.local and input your password(Default password has been setted to raspberry ) Configue the VNC Input sudo raspi-config Navigate to Advance Option Select [P3 VNC] and click [OK] After setting up of the VNC, reboot the pi sudo reboot On Mac Downlaod VNC viewer from: https://www.realvnc.com/en/download/viewer/ After installed the VNC viewer, Input the IP address of raspberry pi and click Continue . Now we have successfully connect to our pi with VNC! Improve the resolution We have justed connected to the pi with VNC. However, the screen is quite small and the resolution wasn’t really good. How can ...

[curl] Download URL to file

cURL provides two kinds of interface to access the internet: easy and multi . Easy interface is synchronous and efficient. The multi interface has asynchronous method also multi-file data transfer ability. In this tutorial, we are going to demonstrate how to simply download an HTTP file from internet with cURL easy method in C++ . Easy interface Let’s talk about the easy interface, steps for data transfer purpose can be separated into three. curl_easy_init() Initialization an easy-session and get a handle. The handle will be used as an input for the following functions. curl_easy_setopt() Setting all the options you want for the internet data transfer including URL, port or the way to write data. curl_easy_perform() After the options you want for the upcoming transfer has been settled. you can call the curl_easy_perform() function. It will do the entire job and won’t return until the job has been done or failed. curl_easy_cleanup() After the job has be...

[curl] Useful Curl learning information

Here listed some useful resources for curl learning. curl.haxx.se The latest development of curl will can be find on curl website. Package can be download from this site, too. Everything curl If you want to find more detail information of curl, Everything curl will be a helpful resource for you. curl Sample codes For a good start, sample codes can be download from: https://curl.haxx.se/libcurl/c/example.html Good luck!

[curl]First curl program with Code::Block

Code::Block is tiny powerful cross-platform IDE for C/C++ program. However, the pre-installed complier is 32-bit. Both curl and openSSL is needed in this tutorial. Hence, it is really important to make sure if they are also installed accordingly. Compiler of your Code::Block can be check from: Setting>Toolchan executables It shows that the compiler is located at C:\MinGW and it is Win32 based. Both Curl and openSSL need to be download for this tutorial.It is highly recommended to install all the program with win32 version!! 1. Download and install the openSSL openSSL can be download from this location. https://slproweb.com/products/Win32OpenSSL.html In this demo, full version of v1.1 is installed. The openSSL folder will be located at C:\OpenSSL-Win32 2. Download and install curl You can find the guideline to setup curl properly from previous article. Just need to remind again that Win32 version is needed in this case. https://aconcaguac...

[curl] how to install curl on windows

How to install Curl on windows Curl is a universal library and command-line tool for data transferring with various common protocols. The protocols including DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, Telnet and TFTP. Curl also supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, HTTP/2, cookies, user+password authentication (Basic, Plain, Digest, CRAM-MD5, NTLM, Negotiate and Kerberos), file transfer resume, proxy tunneling and more. However, Curl is not preinstalled in the windows system. But it can be easily build up in your windows system followed by these few steps. 1. Download curl from internet Connect to https://curl.haxx.se and click on download . 2. Download the curl package Please choose the package that suit for your system. In this demonstration, I used the version 7.54.1 provided by Viktor Szakáts . 3. Unzip the file an...