-----Original Message-----
From: Bryn M. Reeves <bmr@xxxxxxxxxx>
Reply-to: Development discussions related to Fedora <devel@xxxxxxxxxxxxxxxxxxxxxxx>
To: Development discussions related to Fedora <devel@xxxxxxxxxxxxxxxxxxxxxxx>
Cc: Miloslav Trmač <mitr@xxxxxxxx>
Subject: Re: fltk
Date: Wed, 19 Dec 2012 18:01:40 +0000
On 19/12/12 17:30, Miloslav Trmač wrote: > On Wed, Dec 19, 2012 at 6:27 PM, Bryn M. Reeves <bmr@xxxxxxxxxx> wrote: >> On Fedora the following command fails: >> >> g++ -I/usr/include/freetype2 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE >> -D_THREAD_SAFE -D_REENTRANT -pipe -Wall -fexceptions -O2 -ffast-math >> -finline-functions -fomit-frame-pointer -DNDEBUG -g -O2 -o flrig >> [...] -Wl,-Bsymbolic-functions -lfltk_images -lfltk -ldl -lrt -lpthread >> >> While on Ubuntu it works (run in a similarly prep'ed source tree); >> something appears to be "magically" adding -lX11 during the link step on >> Ubuntu > Probably http://fedoraproject.org/wiki/Features/ChangeInImplicitDSOLinking > Mirek > So it seems to be down to the fact that flrig includes <FL/x.H>: $ fgrep 'FL/x.H' rig.cxx #include <FL/x.H> #include <FL/x.H> >From FL/x.h: // These are internal fltk symbols that are necessary or useful for // calling Xlib. You should include this file if (and ONLY if) you // need to call Xlib directly. These symbols may not exist on non-X // systems. There are macros further on that use XCreatePixmap in their definition: # define fl_create_offscreen(w,h) \ XCreatePixmap(fl_display, \ (Fl_Surface_Device::surface()->class_name() == Fl_Display_Device::class_id ? \ fl_window : fl_xid(Fl::first_window()) ) , \ w, h, fl_visual->depth) So I'd say that fltk apps that use this header really do need to specify -lX11 in their own LDFLAGS as they will need these symbols directly. So it's an flrig bug. It's easy to work around: $ LDFLAGS="-lX11" ./configure && make [...] $ ldd src/flrig linux-vdso.so.1 => (0x00007fffccb82000) libX11.so.6 => /lib64/libX11.so.6 (0x0000003c77600000) [...] I couldn't see where to report bugs on w1hkj.com... Regards, Bryn. So why does this bug not show itself on Suse, and any of the Debian based builds? vk4tux
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