Add rgbds package

and byacc as rgbds dependency and self-valuable package.

packages/byacc/build.sh

@@ -0,0 +1,5 @@
+TERMUX_PKG_HOMEPAGE=http://invisible-island.net/byacc/
+TERMUX_PKG_DESCRIPTION="Berkeley Yacc"
+TERMUX_PKG_VERSION=20170709
+TERMUX_PKG_SRCURL=ftp://ftp.invisible-island.net/byacc/byacc-${TERMUX_PKG_VERSION}.tgz
+TERMUX_PKG_SHA256=27cf801985dc6082b8732522588a7b64377dd3df841d584ba6150bc86d78d9eb

packages/rgbds/build.sh

@@ -0,0 +1,10 @@
+TERMUX_PKG_HOMEPAGE=https://rednex.github.io/
+TERMUX_PKG_DESCRIPTION="Rednex Game Boy Development System"
+TERMUX_PKG_VERSION=0.3.2
+TERMUX_PKG_SRCURL=https://github.com/rednex/rgbds/releases/download/v${TERMUX_PKG_VERSION}/rgbds-${TERMUX_PKG_VERSION}.tar.gz
+TERMUX_PKG_FOLDERNAME=rgbds-$TERMUX_PKG_VERSION
+TERMUX_PKG_SHA256=632a6c29341ac8b2d7c4e2081f7825a74b4184d16f8a1ff570229df8006a5ab6
+TERMUX_PKG_BUILD_DEPENDS="byacc,flex,libpng-dev,pkg-config"
+TERMUX_PKG_DEPENDS="libpng"
+TERMUX_PKG_BUILD_IN_SRC=true
+TERMUX_PKG_EXTRA_MAKE_ARGS="PREFIX=${TERMUX_PREFIX} Q= STRIP="