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| Alglib error :"undefined reference to" in ubuntu with g++4.5 http://forum.alglib.net/viewtopic.php?f=2&t=425 |
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| Author: | chengch [ Tue Aug 30, 2011 12:40 pm ] |
| Post subject: | Alglib error :"undefined reference to" in ubuntu with g++4.5 |
I'm new here and trying to make use of alglib. The alg.net told me 'Adding ALGLIB to your project is easy - just pick packages you need and... add them to your project!!" But I can't compile even a simplest example: " #include<stdio.h> #include<iostream> #include "specialfunctions.h" #include "specialfunctions.cpp" using namespace std; int main () { const double x = 2; double y = alglib::besselj0(x); cout << y << "\n"; return 0; " I got the errors: " undefined reference to `alglib_impl::namesoffunctions. .. .. .. .. " is there anyone who can help me ? I first find this when i compile my codes (which could be successfully done under visual studio in Win7) under ubuntu with g++4.5.2. So I write a simple test but still get only errors. I' have visited sevaral webs for this problem, and someone told me I should not only include .h but also .cpp files. But you see, it does not work. Should someone knows why and tell me how to use this in linux? Thanks a lot! |
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| Author: | DiaG [ Sun Mar 04, 2012 5:17 pm ] |
| Post subject: | Re: Alglib error :"undefined reference to" in ubuntu with g+ |
I think, that you should add the paths to alglib's src in settings of compiler. In qt (but Windows) I'm add folder with source to project, and this error disappear |
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| Author: | Sergey.Bochkanov [ Mon Mar 05, 2012 8:02 am ] |
| Post subject: | Re: Alglib error :"undefined reference to" in ubuntu with g+ |
Hello! You should compile .cpp files instead of including them. Compile .cpp as a separate object file, include .h - and it should work. Also, you should compile all cpp files - not just ones you need. |
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