Add grep package

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

cfg/alix/SQUASHFS

@@ -3,3 +3,4 @@ bash
 rootfs
 nano
 util-linux
+grep

cfg/rpi3/SQUASHFS

@@ -6,3 +6,4 @@ firmware-rpi3
 nano
 util-linux
 kmod
+grep

pkg/grep/build

@@ -0,0 +1,27 @@
+VERSION="3.1"
+SRCDIR="grep-${VERSION}"
+TARBALL="${SRCDIR}.tar.xz"
+URL="https://ftp.gnu.org/gnu/grep/"
+SHA256SUM="db625c7ab3bb3ee757b3926a5cfa8d9e1c3991ad24707a83dde8a5ef2bf7a07e"
+
+prepare() {
+	return
+}
+
+build() {
+	local INPUT="$1"
+	local OUTPUT="$2"
+
+	$INPUT/configure --prefix="" --host="$TARGET"
+
+	make -j $NUMJOBS
+}
+
+deploy() {
+	local SOURCE="$1"
+	local BUILD="$2"
+	local DEPLOY="$3"
+
+	make DESTDIR="$DEPLOY" install-strip
+	rm -r "$DEPLOY/share"
+}