The LaTeX header file used when creating PDF documentation depends on
the doxygen and latex versions, respectively.
The old header file 'documentation/src/fltk-book.tex.in' had been
generated manually and needed to be updated for new doxygen versions
which made the PDF documentation generation dependent on the
doxygen/latex versions on the build system.
The new LaTeX header file 'fltk-book.tex' is generated by doxygen,
i.e. taking into account the doxygen and latex versions on the build
system and "edited" to include the page title defined in the new
file 'documentation/src/fltk-title.tex.in'.
This makes the PDF documentation independent of the doxygen and
latex versions of the build system.
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
b713b91975