This is an attempt to unify the code for all build systems (CMake,
autotools with make), platforms (operating systems) and toolchains
(make + gcc/clang, Visual Studio IDE, Xcode ...) to avoid duplicate
code and clarify the differences for future devs and to simplify
maintenance.
The goal is to minimize the platform specific code.
Much of the new code are comments to describe the different situations.
The main program does now all the "hard work" to construct the paths
necessary to access the other applications and data files.
Use macOS specific code to determine the application path (app_path)
in main() instead of function dobut(), when test apps are activated.
Remove obsolete comments and dead code.
Tested on Windows and Linux with both autotools/configure/make
and CMake with make (Linux + MinGW), Visual Studio.
The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11),
Microsoft(r) Windows(r), and MacOS(r) X. FLTK provides
modern GUI functionality without the bloat and supports 3D
graphics via OpenGL(r) and its built-in GLUT emulation. It
was originally developed by Mr. Bill Spitzak and is
currently maintained by a small group of developers across
the world with a central repository in the US.
For more information see README.txt:
https://github.com/fltk/fltk/blob/master/README.txt
af7f485e06