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ImageMagick++ in Eclipse CDT [message #1747526]

Tue, 15 November 2016 16:21

Joyita Das

Messages: 4
Registered: November 2016

Junior Member

Hi, I am new to Eclipse CDT. I am trying to integrate ImageMagick into eclipse. After installing Image magick and maintaining the path in Environment variables, I created a new c++ project with MINGW GCC compiler.

I am trying to test the below simple program-

#include <Magick++.h>
#include <iostream>
#include <string>


using namespace std;
using namespace Magick;

int main(int argc, char**argv){

	InitializeMagick(*argv);
	Image img;
	img.read("Image/happy-fish.jpg");
	img.write("Image/fish.png");

	return 0;
}

But i get the below error while trying to Build the project-

Info: Internal Builder is used for build
g++ "-LC:\\Development\\ImageMagick-7.0.3-Q8\\lib" -o magickTest.exe "src\\zoom.o" -lCORE_RL_Magick++_ -lCORE_RL_MagickWand_ -lCORE_RL_MagickCore_ 
src\zoom.o: In function `main':
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:18: undefined reference to `Magick::InitializeMagick(char const*)'
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:19: undefined reference to `Magick::Image::Image()'
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:20: undefined reference to `Magick::Image::read(std::string const&)'
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:21: undefined reference to `Magick::Image::write(std::string const&)'
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:23: undefined reference to `Magick::Image::~Image()'
C:\Development\Workspace\magickTest\Debug/../src/zoom.cpp:23: undefined reference to `Magick::Image::~Image()'
collect2.exe: error: ld returned 1 exit status

I have added the header file path to GCC c++ Compiler --> Include path (-I)
"C:\Development\ImageMagick-7.0.3-Q8\include"

and the library files to MinGW C++ Linker --> Libraries(-I):
CORE_RL_Magick++_
CORE_RL_MagickWand_
CORE_RL_MagickCore_
and the path to Library Search Path(-L)
C:\Development\ImageMagick-7.0.3-Q8\lib

My system details are as below:
Windows 7 OS, SP1
Eclipse Neon CDT
ImageMagick-7.0.3-Q8

Can someone please help me with this. Please let me know how do I solve this error.

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Re: ImageMagick++ in Eclipse CDT [message #1747563 is a reply to message #1747526]

Wed, 16 November 2016 01:11

David Vavra

Messages: 1413
Registered: October 2012

Senior Member

You seem to have set the libraries correctly.
If those are the actual libraries (I have never used ImageMagick) they could be in the wrong order.
The order of the libraries is important to the linker.
The library containing the code must follow all references to that code.
Try shuffling the order or use a utility (like "nm") to list the library names.

OR, you may have a missing library.
FWIW: in Linux, pkg-config lists only -lMagickCore-6.Q16 as the needed library option.
That may not apply in other configurations.

Generally, this is OT as it is not an Eclipse/CDT issue.

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