Hi I am having trouble configuring an Eclipse C++ (32bit) project to use libcurl. I am using MinGW. I am on a 64bit windows OS. I have done the following so far:
Add "libcurl.lib" to the project's Libraries
Add the path of libcurl.lib to the Library Paths
Add the path to the curl header files to the Includes path
In source, I included "curl/curl.h"
However, I am seeing the following message:
Info: Internal Builder is used for build
g++ "-LC:\\projectsrc\\Network\\curl-7.34.0-win32\\lib" "-LC:\\projectsrc\\Network\\curl-7.34.0-win32\\dlls" "-LC:\\projectsrc\\Network\\curl-7.34.0-win32\\bin" -o TestLibCurl.exe "src\\TestLibCurl.o" "-lC:\\projectsrc\\Network\\curl-7.34.0-win32\\lib\\libcurl.lib"
c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: cannot find -lC:\projectsrc\Network\curl-7.34.0-win32\lib\libcurl.lib
collect2.exe: error: ld returned 1 exit status
Below is the sample source
#include <stdio.h>
#include <curl/curl.h>
#include <curl/easy.h>
#include <string>
#include <sstream>
#include <iostream>
using namespace std;
int main()
{
cout << "test" <<< endl;
return 0;
}
Below is a screenshot of where I added the include path and the library file:
For your reference, I have uploaded my sample C++ eclipse project to dropbox here:
https://www.dropbox.com/s/2jowlkz6qypqe9g/TestingLibCurl.zip
The project file includes main.cpp, the libcurl.lib file, the libcurl header files, and the eclipse project setting files (.cproject, .project, .settings)
Oddly, I am able to get this to work in CodeBlocks IDE, using the same MinGW and using the same computer (Windows 64 bit). Do I need to add linker/options/flags when using Eclipse IDE?
Related
I'm trying to use asio in VSCode with C++. I keep getting the warning:
fatal error: 'asio.hpp' file not found
#include <asio.hpp>
Using the code:
#include <iostream>
#include <asio.hpp>
#include <asio/ts/buffer.hpp>
#include <asio/ts/internet.hpp>
int main(){
asio::error_code ec;
//Create a 'context which is like a platform specific interface
asio::io_context context;
//Get the address of somewhere we wish to connect to
asio::ip::tcp::endpoint endpoint(asio::ip::make_address("93.184.216.34", ec),80);
return 0;
}
In the include path UI settings, I have the following paths listed which should take care of things:
${workspaceFolder}/**
/opt/homebrew/Cellar/asio/**
/opt/homebrew/Cellar/asio/1.24.0_1/include
/opt/homebrew/Cellar/boost/**
/opt/homebrew/Cellar/boost/1.81.0/include/boost
/opt/homebrew/Cellar/boost/1.81.0/include
/Library/Developer/CommandLineTools/SDKs/MacOSX13.1.sdk/usr/include
(there are redundant paths here but I am trying everything at this point)
Finally, it should be able to find the file since the file is there:
ls /opt/homebrew/Cellar/asio/1.24.0_1/include ls /opt/homebrew/Cellar/asio/1.24.0_1/include
Gives:
/opt/homebrew/Cellar/asio/1.24.0_1/include:
asio asio.hpp
I would expect it to just find those files. I have also installed boost using brew. It is available at the boost path included.
I am using Mac M1 with Monterey 12.5.1, and VSCode Version: 1.74.2.
Thanks for the help!
The includePath element in the json file is for intelliSense and not your compiler. If you aren't using CMake you will have to go into tasks.json, there you can specify additional compiler flags.
You want to add a flag: -Ipath/to/asio.
So I made a library with 2 simple functions and I wanted to add it to my codeblocks project but when I run it I get the following error: undefined reference to info::aritmetica::aduna(double, double).
What I did: I went to build options>linker settings and added the full path to my library (the name of it is info_lib.lib). And I also included the full path in the beginning of the main.cpp file (another question, how do I just use the #include "myfile.h" instead of adding the full path of the header file?)
main.cpp code :
#include <iostream>
#include "A:\Programming\info_lib\info_mai_simplu.h"
using namespace std;
int main()
{
cout<<info::aritmetica::aduna(1,2);
return 0;
}
I am working on Windows 10 and I downloaded Boost 1.60 for Visual Studio 2015.
My first code snippet looks as:
#include <boost/thread.hpp>
#include <vector>
#include <iostream>
#include <sstream>
#include <cmath>
#include <iostream>
using namespace std;
void main()
{
std::cout << "Hello World";
}
I get the error:
>LINK : fatal error LNK1104: cannot open file 'libboost_thread-vc140-mt-gd-1_60.lib'
I have provided path for boost and also libraries as shown in pics:
You need to compile the library before using it. Here's how to compile it:
In your Windows Start menu open the "Developer Command Prompt for VS2015". Then inside the opened command prompt, execute those commands:
cd C:\boost_1_60_0
bootstrap.bat
.\b2 runtime-link=shared toolset=msvc-14.0
Wait for a couple of minutes, since compilation takes a while.
Specify in your project in Linker -> General, the Additional Library Directories path as C:\boost_1_60_0\stage\lib, and in C++ -> General the Additional Include Directories path as C:\boost_1_60_0
You should now be able to compile your code without problem.
this will probably a dumb question for you guy's but I have no experience in C++ what so ever. I'm using an open source project osrm (which is awesome). Still to request a route, you have make an http request. To reduce the running time, I would like to build a wrapper around the code and call it using the command line. So I googled a bit and found that osrm already creates a static lib (.a file) when compiling the project. I also found a piece of code that points me in the right directions for building a wrapper. So to begin I build a simple hello world program (see below) that includes some files from that static lib. To compile I followed this tutorial.
My directory structure looks like this:
./helloWorld.cpp
./libs/libOSRM.a
And the command to compile is this:
gcc –static helloworld.cpp –L ./libs –l libOSRM.a
The code it selve:
#include "Router.h"
#include "boost/filesystem/path.hpp"
#include "ServerPaths.h"
#include "ProgramOptions.h"
#include <InternalDataFacade.h>
#include <viaroute.hpp>
#include <iostream.h>
main()
{
cout << "Hello World!";
return 0;
}
the exact error I got:
fatal error: ServerPaths.h: No such file or directory #include "ServerPaths.h"
Add the -IPathToTheHeaderFiles to the compiler options. So it will find the files to be included. Replace PathToTheHeaderFiles with the path where your file ServPaths.h resides.
Edit: Add as many -I as you need for further header files.
Additionally it would be worth to read a book about C++ or/and the GCC manual1
1 Section 3.11 will help.
I'm having some troubles to get my CodeLite IDE working with Boost library.
So basically, I've got CodeLite v.6.1.1 and Boost library downloaded from sourceforge. I would love to make it actually working, but I failed to do so using the following concept:
I did create new workspace, than I did go -> Settings -> Build Settings -> Compilers (here I have two compilers, one of which is CodeLite 4.8.1 and the other one is MinGW Code::Blocks, I did select CodeLite 4.8.1. -> Advanced -> Global Paths -> and I did provide two blank lines of Include Path and Libraries Path with the directory of unpacked boost library (Windows 7): C:\boostlib\boost_1_57_0.
In this catalog (i.e.: C:\boostlib\boost_1_57_0), I have got all neccesary files, all of them are unzipped and yet I can't get it working.
Besides, I can't click on apply when I'm done with setting path to files containing boost library, all I can do is click ok but once I'm done with this I can't work with libraries from boost.
The following code isn't working:
#include <boost/lambda/lambda.hpp>
#include <iostream>
#include <iterator>
#include <algorithm>
int main()
{
using namespace boost::lambda;
// ERROR MESSAGE: boost/lambda/lambda.hpp, No such file or directory
typedef std::istream_iterator in;
std::for_each(in(std::cin), in(), std::cout << (_1 * 3) << ” ” );
return 0;
}
The message I get is:
boost/lambda/lambda.hpp: No such file or directory
Is there any chance I can get CodeLite working with boost library or should I simply switch IDE and forget about it ?
Your on the right track but need to point to the libs and include folders inside the boost directory.
I use the the http://nuwen.net/mingw.html version of mingw as STL (the guy) includes boost as part of his distribution.
So in codeLite I just have to add
C:\MinGW\lib to the libraries path
C:\MinGW\include to the include path