diff --git a/src/build.sh b/src/build.sh
new file mode 100755
index 000000000..c407f58bc
--- /dev/null
+++ b/src/build.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# this is not really used as we don't do 'make install'. You can still specify
+# it in case you _want_ to manually 'make install' the target libosmocore.
+CROSS_INST_PREFIX=/usr/local/gnuarm-4.0.2/arm-elf
+
+# this is the prefix of your cross-toolchain programs
+CROSS_TOOL_PREFIX=arm-elf-
+
+TOPDIR=`pwd`
+
+# autoreconf libosmocore if needed
+if [ ! -f shared/libosmocore/configure ]; then
+	(cd shared/libosmocore && autoreconf -i)
+fi
+
+echo "building the target (ARM) version of libosmocore"
+cd "$TOPDIR/shared/libosmocore"
+if [ ! -d build-target ]; then
+	mkdir build-target
+fi
+cd build-target
+export CC="${CROSS_TOOL_PREFIX}gcc"
+export LD="${CROSS_TOOL_PREFIX}ld"
+export RANLIB="${CROSS_TOOL_PREFIX}ranlib"
+if [ ! -f Makefile ]; then
+	../configure --host=arm-elf-linux --disable-shared --prefix="$CROSS_INST_PREFIX"
+fi
+make
+unset CC
+unset LD
+unset RANLIB
+
+echo "building the host (X86) version of libosmocore"
+cd "$TOPDIR/shared/libosmocore"
+if [ ! -d build-host ]; then
+	mkdir build-host
+fi
+cd build-host
+if [ ! -f Makefile ]; then
+	../configure
+fi
+make
+
+echo "building the target firmware "
+cd "$TOPDIR/target/firmware"
+make
+
+echo "building osmocon"
+cd "$TOPDIR/host/osmocon"
+make
+
+echo "READY!"