FLTK logo

Re: [fltk.general] Re: I just installed FLTK on Linux but I have a compile error

FLTK matrix user chat room
(using Element browser app)   FLTK gitter user chat room   GitHub FLTK Project   FLTK News RSS Feed  
  FLTK Apps      FLTK Library      Forums      Links     Login 
 All Forums  |  Back to fltk.general  ]
 
Previous Message ]New Message | Reply ]Next Message ]

Re: Re: I just installed FLTK on Linux but I have a compile error Albrecht Schlosser Oct 22, 2020  
 
On 10/22/20 3:58 PM ken williams wrote:
It seems I can't compile it with g++ ...
I tried this:

    g++ hello.cpp -o hello -I/usr/local/include -L/usr/local/lib -lfltk -lXext -lX11 -lm

and I get this:

    /usr/bin/ld: /usr/local/lib/libfltk.a(Fl_X11_Window_Driver.cxx.o): undefined reference to symbol 'dlsym@@GLIBC_2.2.5'     /usr/bin/ld: /usr/lib/libdl.so.2: error adding symbols: DSO missing from command line
     collect2: error: ld returned 1 exit status

Could someone tell me what I should add or change?

That particular error is (AFAICT) because you missed to include '-ldl' in your command.

A more general approach would be to use either

$ fltk-config --compile hello.cxx

and learn from the output which options you need or to use fltk-config to provide the necessary options for you, like this:

$ fltk-config --cxxflags
$ fltk-config --ld[static]flags

See docs and/or

$ fltk-config --help

for more info.

Thank you!

Welcome.

--
You received this message because you are subscribed to the Google Groups "fltk.general" group.
To unsubscribe from this group and stop receiving emails from it, send an email to fltkgeneral+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/fltkgeneral/300af06c-bf07-c441-7831-e03836b642fb%40online.de.
Direct Link to Message ]
 
     
Previous Message ]New Message | Reply ]Next Message ]
 
 

Comments are owned by the poster. All other content is copyright 1998-2024 by Bill Spitzak and others. This project is hosted by The FLTK Team. Please report site problems to 'erco@seriss.com'.