From: Jason Woofenden <jason@jasonwoof.com>
Date: Fri, 12 Nov 2010 11:16:28 +0000 (-0500)
Subject: Improve autoconf detection of sdl(_image|_mixer)
X-Git-Tag: 0.5.6~9
X-Git-Url: https://jasonwoof.com/gitweb/?p=vor.git;a=commitdiff_plain;h=a9e7cce3e8831c267147fe0f24e8991dc31d6b0c;hp=a9e7cce3e8831c267147fe0f24e8991dc31d6b0c

Improve autoconf detection of sdl(_image|_mixer)

This commit makes VoR cross-compile for windows on linux using stock
mingw-cross-env (make sdl-image sdl-mixer) with just

./configure --host=i686-pc-mingw32 && make

This removes the m4 craziness and instead relies on pkg-config to tell us how
to compile and link against SDL.

pkg-config files for SDL_image and SDL_mixer are used if found, but are not
required (they default to -lSDL_image and -lSDL_mixer respectively.)

Also the check for a symbol in SDL_mixer was updated to try to check for vorbis
support.
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