FLTK linker problem (Eclipse & Windows)

vectrum · 08-28-2015, 12:47 PM

When I try to link this with fltk lib (1.3 win-bin) I get the following errors. My gcc is TDM 4.8 (32 bit). I use eclipse cdt. Please tell me what goes wrong here.

Code:

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Box.H>

int main(int argc, char **argv) {
  Fl_Window *window = new Fl_Window(340,180);
  Fl_Box *box = new Fl_Box(20,40,300,100,"Hello, World!");
  box->box(FL_UP_BOX);
  box->labelfont(FL_BOLD+FL_ITALIC);
  box->labelsize(36);
  box->labeltype(FL_SHADOW_LABEL);
  window->end();
  window->show(argc, argv);
  return Fl::run();
}

Info: Internal Builder is used for build g++ "-IC:\fltk\include" "-includeC:\fltk\include\FL\Fl.H" "-includeC:\fltk\include\FL\Fl_Box.H" "-includeC:\fltk\include\FL\Fl_Window.H" -O0 -g3 -Wall -c -fmessage-length=0 -o fltkcpp.o "..\fltkcpp.cpp" g++ "-LC:\fltk\lib" -o fltkproject.exe fltkcpp.o -lfltk -lfltk_forms -lfltk_gl -lfltk_images -lfltk_jpeg -lfltk_png -lfltk_z

C:\fltk\lib/libfltk.a(Fl.o):Fl.cxx

.text+0x179): undefined reference to OleUninitialize@0' . .(18 errors) . C:\fltk\lib\/libfltk.a(Fl.o):Fl.cxx

.text+0x537): undefined reference toGdiFlush@0' c:/gcc/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: C:\fltk\lib/libfltk.a(Fl.o): bad reloc address 0x4 in section `.data' c:/gcc/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/bin/ld.exe: final link failed: Invalid operation collect2.exe: error: ld returned 1 exit status

It seems eclipse's found the libs and linked.

ButterflyMelissa · 08-29-2015, 07:36 AM

umm...is'nt that a ***dows question? Unless I'm mistaken, then...sowwyyyy

Thor

ntubski · 08-29-2015, 09:27 AM

A similar question suggests to link Gdi32.lib.

Quote:

Originally Posted by MortenMacFly

You are missing to link against the windows libs. Search on MSDN for each of the symbols the linker complains about. MSDN will tell you which lib(s) you have to link against.
For example "DeleteObject": Find it here:
https://msdn.microsoft.com/en-us/library/dd183539.aspx [ed: URL updated]
Find the info about libs as there are: "Library: Use Gdi32.lib" -> written on that webpage
Add "gdi32" to the libs to link against.

For gcc I think would mean adding -lgdi32, I'm not sure how to accomplish that via Eclipse.

Quote:

Originally Posted by Thor_2.0

umm...is'nt that a ***dows question?

The Programming forum is under "Non-*NIX Forums".

ButterflyMelissa · 08-29-2015, 11:55 AM

Quote:

The Programming forum is under "Non-*NIX Forums".

Indeed, however, OP's (very complete) info makes some suggestions to windows...hence my observation...if the problem lies there...there's not a lot we can do...

Thor

NevemTeve · 08-29-2015, 12:46 PM

> undefined reference to OleUninitialize

If your linker is able to link from *.dll files, simply specify this DLL: c:\windows\system32\ole32.dll (in case 64-bit Windows, 64-bit linker, 32-bit target: c:\windows\syswow64\ole32.dll)

Otherwise you have to find/create an ole32.lib file.

a4z · 08-29-2015, 12:47 PM

Quote:

Originally Posted by Thor_2.0

umm...is'nt that a ***dows question? Unless I'm mistaken, then...sowwyyyy

Thor

and ?
mingw ,gcc , fltk , all open source,

Non-*NIX Forums > Programming

Quote:

This forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.

you have problems with reading, or is it that you just want to rant around a little bit

ButterflyMelissa · 08-30-2015, 03:48 AM

Quote:

you have problems with reading, or is it that you just want to rant around a little bit

yea sure...
Basic politeness and a misunderstanding (for which I apologised beforehand)...but...politeness seems not to be your strongest point...
excusing myself from this thread...

Quote:

Unless I'm mistaken, then...sowwyyyy

Seems you dont read well...
maybe this helps?
Keep wankin'...maybe that'll help

Peace...for those that understand what it is...
Edit

Quote:

a4z has not made any friends yet

figures...added to my ignore list, so we dont clash anymore...distance seems the safer option...

vectrum · 09-07-2015, 03:46 PM

@ntubski, @NevemTeve

Thank you very much. I've got the clue 'n I'm quite relieved that I have got no issue with eclipse and fltk lib itself.

Thanks again.

P.S Do I have to fight the tons of ego for the rest of life?

I can hit it wrong...
I can not know everything...
I can cry...
I can laugh...
I can be happy...
...because I'm human... and lunatic....