This patch fix the irrlicht makefile which contains the paths
that point to the host system libraries that are not used and
are not available in Buildroot what's unsafe for cross-compilation.
In addition it fixes linking to the X11 libraries and the following errors:
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `XSetSelectionOwner'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `glXGetProcAddress'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `glXMakeCurrent'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `XF86VidModeSetViewPort'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `XF86VidModeSwitchToMode'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `glClearDepth'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `XGetVisualInfo'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `XGrabKeyboard'
/home/bartekk/buildroot/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: /home/bartekk/buildroot/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libIrrlicht.so: undefined reference to `glMatrixMode'
Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
98c57af89d