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+August 30, 1998 -- Paul Garceau (pgarceau@teleport.com)

+

+DISCLAIMER:  I make this extension to the Mesa 3-D Graphics Library as a service

+to the general public.  I can, in no way support or make any guarantee that the

+EGCS-Mingw32 build or any Gnu-Win32 build will work for your system. The

+associated packages and batch files I have included as part of the EGCS-Mingw32

+extension are provided "As-is" with out any guarantee of support or functionality

+from the author of this EGCS-Mingw32 native windows port of the Mesa 3-D Graphics

+Library.

+

+	Feel free to modify or change things as you see fit, just remember that

+I can't support any modifications you might want to make to the files which I

+have included OR the lgpl protected Mesa 3-D Graphics Library.

+

+

+	EGCS-Mingw32 Beta 3.08 Archive Manifest:

+		mingw32.bat

+		src/makefile.nt4

+		src/wmesa.c

+		src-glu/makefile.nt4

+

+###############

+

+Greetings,

+

+	In order to build the Mingw32 set of Mesa 3-D Graphics Library for Beta3.08

+it will be necessary for you to use the Dos or Command Prompt that is available

+on most of the i86 based MS Windows machines.  Also, I believe that this build

+will run on Win95, Win98, WinNT4 and WinNT5.

+

+	I haven't tested Win95/98 or WinNT5.  This build was generated under

+WinNT4 with SP3 installed.

+

+	This has not been tested under any systems outside of

+a WinNT4 Workstation with EGCS-Mingw32 toolchain, v.1.0.2 installed.

+

+	EGCS-Mingw32 uses a variation of gcc to handle its build.  The Mesa 3-D

+Graphics Library build that I have generated is based, in small part, on the

+Cygwin32 build and associated makefiles that Stephane Rehel (rehel@worldnet.fr)

+defined back in 1997.  The EGCS-Mingw32 toolchain is capable of generating

+native windows code and, as of the date of this readme, can be obtained from:

+

+	http://www.xraylith.wisc.edu/~khan/software/gnu-win32/egcs-mingw32-102.html

+

+	Much thanks to the combined efforts of Mumit Khan, Jan-Jaap Vanderhagen

+and Colin Peters for making it possible for the EGCS-Mingw32 toolchain to exist.

+

+Installing EGCS-Mingw32 Build Revisions:

+

+	To install the makefile and source revisions incorporated with this build

+of the Mesa 3-D Graphics Library, you'll have to use a version of winzip.  I am

+in the process of finding a suitable Win32 compatible tar executable so that if

+you don't have winzip, you can still decompress the files into their respective

+folders/directories.

+

+	a) Move the mingw32.zip file to the top level of the hard drive on your

+system.

+

+	b) Copy all of the Beta 3.08 src/windows files to the src/ directory.

+

+	b) Open the Winzip file

+

+	c) Verify that the files will be properly extracted.

+

+	d) Extract the files with the Winzip "Overwrite" and "Use Folder Names"

+	   options enabled.

+

+	The zip file directory structure extraction defaults to the top level of

+the hard drive where the mingw32.zip file exists unless otherwise instructed by

+you.

+

+	The version of wmesa.c included with the mingw32 archive needs to replace

+the current version of the Beta 3.08 wmesa.c file in order for the egcs-mingw32

+build to work.  This is because the original Win32 stuff assumes that the glut

+utilities are to be installed.  The Glut utilities are not part of the

+egcs-mingw32 build for Beta 3.08.

+

+

+Build Considerations:

+

+	In order to get the build to work, I needed to create a special makefile

+for each library which the Mesa 3-D Graphics Library requires since there is no

+comparable make-config/config on a native windows platform.

+

+	Since I was only creating a few of the possible libraries for 

+Mesa (gl, glu), I only created the new make files in their respective libraries

+src, src-glu).  For libMesaaux.a. you will find a makefile for it in the

+src-aux directory.  libMesatk.a and libglut.a were not ported.

+

+	The build itself is a .bat based build and uses Gnu Make,Version 3.76.1 to

+process the makefiles noted above.  The build must be run from the directory

+where the mingw32.bat file is.  You can get the binary version of Make 3.76.1

+from Jan-Jaap van der Heijden's site in Germany:

+

+	http://agnes.dida.physik.uni-essen.de/~janjaap/mingw32/download.html

+

+	It was necessary to modify some source code, specifically the source code

+in the src-glu directory.  I needed to modify nurbs.c, quadric.c and tess.c in

+order to get them to work using the EGCS-Mingw32 toolchain.

+

+	The original EGCS-Mingw32 Toolchain, is available from:

+

+	http://www.xraylith.wisc.edu/~khan/software/gnu-win32/egcs-mingw32-102.html	

+

+Running the Build:

+

+	Ok, now that we've got the basics out of the way, follows is all you need

+to do in order to build the EGCS-Mingw32 version of libMesaGL.a and libMesaGLU.a:

+

+	Open your Command Prompt/Dos prompt.

+	Go to your Mesa-3.0 beta 'root' directory.

+		This is the same directory that the Mesa mingw32.zip file was

+		originally stored in if you've installed the Mesa-3.0 beta 3-D

+		Graphics Library source as outlined in the "readme" file included

+		with the Mesa-3.0 beta distribution.

+	At the command line type: mingw32

+		mingw32 is the .bat file that actually does the build.

+

+	Enjoy!

+

+	Peace,

+

+		Paul G. (pgarceau@teleport.com)
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