Duncan Gibson wrote: >> I'm using FLTK 1.1.9, installed as an RPM package under CentOS 5 >> (RHEL 5) and using Cmake 2.4 to build a third party application. >> Depending on whether I set the compiler include directory to >> /usr/include or /usr/include/Fl, I get different storms of error >> messages. >> >> As I read the FLTK documentation, the proper method in C++ source >> files is: >> #include <FL/Fl_xyz.H> >> The include directive to the compiler should be -I/usr/include, >> or specified as /usr/include in the CMakeLists.txt file. >> ... >> > > Yes, that's #include <FL/FL_xyz.H> and not <Fl/FL_xyz.H> ! > > This can be hard to spot if you've already been developing on a > case-insensitive system and then move code to a case-sensitive one. > > On my system there's a /usr/include/FL (both F and L in capitals) > directory, and a /usr/include/Fl (big F, small l) symbolic link. > > Many people are using FLTK because of the cross-platform support, > so it's usually a question of _when_ rather than _if_ this problem > occurs. There's been some discussion about removing the Fl symbolic > link in FLTK 1.3.x because it masks this sort of problem. By the > time the user has a significant body of code to port to the other > platform(s), it's not a trivial task to repair all #include lines > and file names. > > Cheers > Duncan > >
My system also has FL and it's Fl link. The problem I'm seeing seems related to the order in which the compiler searches include directories. What works is searching /usr/include first, then searching /usr/include/Fl, and then only if I've renamed FL/math.h to something else (eg. Fl_math.h). I don't know enough about Cmake to tell it what order the include directories should be in. What I got from the FLTK docs is that I shouldn't put /usr/include/FL in the include search path at all. That doesn't seem to work because the FLTK includes don't put the directory qualification in their includes. Thanks, Ted _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
