Requested by yugami:
> might I suggest explicitly including libGL as well as libpng.
> One of the previous builders errors needed that explicitly added in
As Peter Stuge pointed out, it works anyway if fltk is built with png
support because solvespace uses the flags returned by fltk-config.
If fltk was built with png support enabled, these include -lpng.
The libslvs library and CDemo program can now be built by Autotools. A few
code changes were needed for this: C++ comments in C code had to be
converted, constraint.cpp required some massaging, and fltkutil.cpp needed
a stub for InitHeaps().
Place a pre-built copy of generated source files in src/built/, so that
users building SolveSpace from Git without the tools or setup necessary to
generate these can still complete the process.
Makefile.msvc: Use slashes consistently, and added rules to copy files from
src/built/ if needed
configure.ac: Check for presence of src/built/ at configure time
src/Makefile.am: Handle the generated *.table.h files together with
icon*.h; updated the source-generation rules so that the files are created
in builddir, not srcdir; added rules to copy files from src/built/ if
needed
The SolveSpace top-level directory was getting a bit cluttered, so
following the example of numerous other free-software projects, we move the
main application source into a subdirectory and adjust the build systems
accordingly.
Also, got rid of the obj/ directory in favor of creating it on the fly in
Makefile.msvc.
With this commit, SolveSpace gains an Autotools build system and a new
platform-dependent backend implemented using the FLTK GUI toolkit. These
will allow the application to be built and run on Linux and other Unix-like
operating systems, and prospectively, MacOS X.
A number of new files have been added:
* Makefile.am: Automake makefile template; this contains some experimental
support for MinGW and MSVC++ builds that needs further development
* ac-aux/ax_fltk.m4: Autoconf M4 macro to locate and query the system's
installation of FLTK; this will eventually be contributed to the GNU
Autoconf Archive
* autogen.sh: Script to bootstrap the Autotools build system, usually for a
tree just checked out from source control
* configure.ac: Source for the Autoconf configure script; note that this
file specifies a version of 2.1, near the top
* fltk/fltkmain.cpp: Main FLTK backend implementation
* fltk/fltkutil.cpp: Utility functions for the FLTK backend
* fltk/xFl_Gl_Window_Group.{H,cxx}: Implementation of a new
Fl_Gl_Window_Group widget for FLTK, needed to facilitate drawing FLTK
widgets on top of OpenGL graphics as SolveSpace does. This has been
submitted to the FLTK project for (hopefully) eventual upstream
inclusion:
http://www.fltk.org/str.php?L2992
The following minor changes are also a part of this commit:
* Makefile.msvc: Define PACKAGE_VERSION=2.1 for the benefit of
solvespace.cpp in MSVC++ builds
* solvespace.cpp: In the About dialog text, use PACKAGE_VERSION rather than
hard-coding the version of the program
* solvespace.h: Don't define the C99 integer types if
HAVE_C99_INTEGER_TYPES is defined, to facilitate MinGW builds
Roland Lutz
Daniel Richard G