#!/bin/bash
# change link libEGL.so , libEGL.so.1 , libGLESv2.so , libGLESv2.so.2
set -Ceu

if [ "$USER" == "root" ]; then
    :
else
    echo "please sudo chg_libegl.sh."
    exit 0
fi

LIBDIR0=/usr/lib/arm-linux-gnueabihf
LIBEGL0="${LIBDIR0}/libEGL.so.1.0.0"
LIBGLESV20="${LIBDIR0}/libGLESv2.so.2.0.0"

LIBEGL1=/usr/lib/chromium-browser/libEGL.so
LIBGLESV21=/usr/lib/chromium-browser/libGLESv2.so

LIBEGL2=/opt/vc/lib/libbrcmEGL.so
LIBGLESV22=/opt/vc/lib/libbrcmGLESv2.so

LIBEGLSRC=
LIBGLESV2SRC=

echo "change libEGL.so , libGLESv2.so"
echo "  0 : ${LIBEGL0}"
echo "  1 : ${LIBEGL1}"
echo "  2 : ${LIBEGL2}"
read -p "select (0/1/2/n): " num

case "${num}" in
    "0" )
        LIBEGLSRC="${LIBEGL0}"
        LIBGLESV2SRC="${LIBGLESV20}"
        echo "# select 0"
        ;;
    "1" )
        LIBEGLSRC="${LIBEGL1}"
        LIBGLESV2SRC="${LIBGLESV21}"
        echo "# select 1"
        ;;
    "2" )
        LIBEGLSRC="${LIBEGL2}"
        LIBGLESV2SRC="${LIBGLESV22}"
        echo "# select 2"
        ;;
esac

if [ -n "${LIBEGLSRC}" ]; then
    if [ -e "${LIBEGLSRC}" ]; then
        echo "# Found ${LIBEGLSRC}"
        echo "sudo ln -fs ${LIBEGLSRC} ${LIBDIR0}/libEGL.so"
        echo "sudo ln -fs ${LIBEGLSRC} ${LIBDIR0}/libEGL.so.1"
        ln -fs ${LIBEGLSRC} ${LIBDIR0}/libEGL.so
        ln -fs ${LIBEGLSRC} ${LIBDIR0}/libEGL.so.1
    else
        echo "Not found ${LIBEGLSRC}"
    fi
else
    echo "hold libEGL.so link."
fi

if [ -n "${LIBGLESV2SRC}" ]; then
    if [ -e "${LIBGLESV2SRC}" ]; then
        echo "# Found ${LIBGLESV2SRC}"
        echo "sudo ln -fs ${LIBGLESV2SRC} ${LIBDIR0}/libGLESv2.so"
        echo "sudo ln -fs ${LIBGLESV2SRC} ${LIBDIR0}/libGLESv2.so.2"
        ln -fs ${LIBGLESV2SRC} ${LIBDIR0}/libGLESv2.so
        ln -fs ${LIBGLESV2SRC} ${LIBDIR0}/libGLESv2.so.2
    else
        echo "Not found ${LIBGLESV2SRC}"
    fi
else
    echo "hold libGLESv2.so link."
fi

if [ -n "${LIBEGLSRC}" -o -n "${LIBGLESV2SRC}" ]; then
    echo "sudo ldconfig"
    ldconfig
fi

echo -e "\n"
/bin/ls -alF --color=auto ${LIBDIR0}/libEGL*
/bin/ls -alF --color=auto ${LIBDIR0}/libGLESv2*
exit 0