#!/bin/bash

# This script is designed to tweak the system for eselect-opengl/opengl-update.

# move symlinks to a malleable /etc/opengl directory.
install -d test/lib/modules/extensions

# First, we remove all of the symlinks, so we can point them to our own
# /etc/opengl directory
rm -f /usr/lib*/libGL{,core}.{a,so}* > /dev/null 2>&1
rm -f /usr/lib*/modules/extensions/libglx* > /dev/null 2>&1
rm -f /usr/lib*/xorg/modules/extensions/libglx* > /dev/null 2>&1

# We start with the "default" libdir of /usr/lib
ln -sf /etc/opengl/lib/libGL.so /usr/lib/libGL.so
ln -sf /etc/opengl/lib/libGL.so.1 /usr/lib/libGL.so.1
ln -sf /etc/opengl/lib/libGLcore.so /usr/lib/libGLcore.so
ln -sf /etc/opengl/lib/libGLcore.so.1 /usr/lib/libGLcore.so.1
ln -sf /etc/opengl/lib/libGL.la /usr/lib/libGL.la

# We then check for /usr/lib32
if [ -d /usr/lib32 ]
then
	ln -sf /etc/opengl/lib32/libGL.so /usr/lib32/libGL.so
	ln -sf /etc/opengl/lib32/libGL.so.1 /usr/lib32/libGL.so.1
	ln -sf /etc/opengl/lib32/libGLcore.so /usr/lib32/libGLcore.so
	ln -sf /etc/opengl/lib32/libGLcore.so.1 /usr/lib32/libGLcore.so.1
	ln -sf /etc/opengl/lib32/libGL.la /usr/lib32/libGL.la
fi

# We create symlinks fo the libglx.so and libglx.a
if [ -d /usr/lib/modules/extensions ]
then
	ln -sf /etc/opengl/lib/modules/extensions/libglx.so \
		/usr/lib/modules/extensions/libglx.so
	ln -sf /etc/opengl/lib/modules/extensions/libglx.a \
		/usr/lib/modules/extensions/libglx.a
	if [ -d /usr/lib32 ]
	then
		ln -sf /etc/opengl/lib32/modules/extensions/libglx.so \
			/usr/lib32/modules/extensions/libglx.so
		ln -sf /etc/opengl/lib32/modules/extensions/libglx.a \
			/usr/lib32/modules/extensions/libglx.a
	fi
elif [ -d /usr/lib/xorg/modules/extensions ]
then
	ln -sf /etc/opengl/lib/modules/extensions/libglx.so \
		/usr/lib/xorg/modules/extensions/libglx.so
	ln -sf /etc/opengl/lib/modules/extensions/libglx.a \
		/usr/lib/xorg/modules/extensions/libglx.a
	if [ -d /usr/lib32 ]
	then
		ln -sf /etc/opengl/lib32/modules/extensions/libglx.so \
			/usr/lib32/xorg/modules/extensions/libglx.so
		ln -sf /etc/opengl/lib32/modules/extensions/libglx.a \
			/usr/lib32/xorg/modules/extensions/libglx.a
	fi
fi