raze-gles/polymer/eduke32/Windows/lib/minipng.dfa
hendricks266 dac94ce284 Win64 support! (Meaning it works, not that we recommend it for everyday use.)
This includes a complete Windows header and library refresh, including the addition of 64-bit compiled libs:
*libogg 1.3.0
*libvorbis 1.3.3
*zlib 1.2.7
*libpng 1.5.13
*libvpx 9a3de881c0e681ba1a79a166a86308bbc84b4acd
*SDL_mixer 1.2.12 (for RENDERTYPE=SDL)
*DirectX import libraries: dsound and dxguid (now included)

To build in 64-bit, you essentially need MinGW's MSYS (but not MinGW itself) and MinGW-w64 at the top of your PATH. The target is automatically detected using `$(CC) -dumpmachine`. The EDukeWiki will get detailed instrucitons.

All compiler and linker warnings when building in 64-bit mode have been fixed.

Remaining 64-bit to-do:
 - The ebacktrace dll does not build under 64-bit. It uses code specific to the format of 32-bit executables and will have to be ported to work with 64-bit executables. A future 64-bit version will be named ebacktrace1-64.dll.
 - RENDERTYPE=SDL crashes in SDL_mixer's Mix_Linked_Version().
 - DirectInput gives an error and does not function. This only affects joysticks, and the error never happens without any plugged in.
 - Port the classic renderer ASM to 64-bit. (Just kidding, this is way out of my league.)

This commit includes a fair bit of Makefile development spanning all platforms, including simplifying the SDLCONFIG code, fixing build on Mac OS X (thanks rhoenie!), globally factoring Apple brew/port inclusion, enforcing that all -L come before all -l, and ensuring that $(shell ) is always :='d.

In addition, I have resurrected the old GCC_MAJOR and GCC_MINOR detection using `$(CC) -dumpversion`, but I have made it failsafe in case the command fails or the version is manually specified. I have applied this new fine-grained detection where applicable, including allowing LTO, and restraining -W's to versions that support them.

git-svn-id: https://svn.eduke32.com/eduke32@3278 1a8010ca-5511-0410-912e-c29ae57300e0
2012-12-13 02:37:20 +00:00

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# Minimal LibPNG for EDuke32
# based on contrib/pngminim/encoder/pngusr.dfa of libpng
#
# Usage: from libpng source root and assuming zlib source in ../zlib,
# make -f scripts/pnglibconf.mak DFA_XTRA=./minipng.dfa CPP="gcc -E"
# make -f scripts/makefile.gcc libpng.a
#
# To clean up:
# make -f scripts/pnglibconf.mak clean
# make -f scripts/makefile.gcc clean
#
# For zlib, the following files are included in the 'mini' archive:
# crc32.o deflate.o adler32.o zutil.o trees.o
# ========== MODIFIED ORIGINAL FILE FOLLOWS ==========
# pngminim/encoder/pngusr.dfa
#
# Copyright (c) 2010-2011 Glenn Randers-Pehrson
#
# This code is released under the libpng license.
# For conditions of distribution and use, see the disclaimer
# and license in png.h
# First all the build options off:
everything = off
# Switch on the write code - this makes a minimalist encoder
option WRITE on
# You must choose fixed or floating point arithmetic:
#option FLOATING_POINT on
option FIXED_POINT on
# You must chose the internal fixed point implementation or to
# use the system floating point. The latter is considerably
# smaller (by about 1kbyte on an x86 system):
#option FLOATING_ARITHMETIC on
option FLOATING_ARITHMETIC off
# Your program will probably need other options. The example
# program here, pnm2pngm, requires the following. Take a look
# at pnglibconf.h to find out the full set of what has to be
# enabled to make the following work.
option SETJMP on
option USER_MEM on
option WRITE_TEXT on
option STDIO on
option INFO_IMAGE on