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

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?

hello.cpp is the one from the FLTK 1.4.0 documentation: https://fltk.gitlab.io/fltk/basics.html

Thank you!

On Wednesday, October 21, 2020 at 5:16:54 PM UTC+2 ken williams wrote:

He is using Visual Studio but he doesn't have an express recommendation, as far as I know.
I started with VS on Windows.. but I switched VS Code and now to Linux to force myself to understand more of what's behind the scenes...

On Wednesday, October 21, 2020 at 5:09:36 PM UTC+2 Ian MacArthur wrote:
On 21 Oct 2020, at 15:28, ken williams wrote:
>
> Thanks Greg.. it works with fltk-config
> Thanks wea...@gmail.com, I was so focused on installing it that I forgot about the documentation
> Going back to reading it...

As an aside - what does Dr.S recommend to do for compiling stuff in his book?

You said you were following the book, so I wonder what mechanism it recommends...

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