diff --git a/toolchain/make.sh b/toolchain/make.sh
new file mode 100644
index 0000000..974d611
--- /dev/null
+++ b/toolchain/make.sh
@@ -0,0 +1,151 @@
+#!/bin/sh
+TARGET=mipsel-elf
+PREFIX=/usr/local
+
+SRC_BINUTILS=binutils-2.19
+SRC_GCC=gcc-4.3.3
+SRC_NEWLIB=newlib-1.16.0
+SRC_GMP=gmp-4.2.4
+SRC_MPFR=mpfr-2.4.0
+
+# ---------------------------------------------------------------
+# 1. Binutils bauen und installieren
+# ---------------------------------------------------------------
+if [ ! -e $SRC_BINUTILS.tar.bz2 ]; then
+  echo Downloading $SRC_BINUTILS
+  wget ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/ftp.gnu.org/binutils/$SRC_BINUTILS.tar.bz2 || exit 1
+else
+  echo Skipped downloading $SRC_BINUTILS
+fi  
+
+if [ ! -e ./$SRC_BINUTILS ]; then
+  echo Unpacking $SRC_BINUTILS
+  tar -xjf $SRC_BINUTILS.tar.bz2 || exit 1
+else
+  echo Skipped unpacking $SRC_BINUTILS
+fi
+
+if [ ! -e ./$SRC_BINUTILS-build ]; then
+  echo Building $SRC_BINUTILS
+  mkdir -p $SRC_BINUTILS-build
+  cd $SRC_BINUTILS-build
+  ../$SRC_BINUTILS/configure --target=$TARGET --prefix=$PREFIX || exit 1
+  make || exit 1
+  make install || exit 1
+  cd ..
+else
+  echo $SRC_BINUTILS is already built.
+fi
+
+# ---------------------------------------------------------------
+# 2. GMP bauen und installieren
+# ---------------------------------------------------------------
+if [ ! -e $SRC_GMP.tar.bz2 ]; then
+  echo Downloading $SRC_GMP
+  wget http://ftp.sunet.se/pub/gnu/gmp/$SRC_GMP.tar.bz2 || exit 1
+else
+  echo Skipped downloading $SRC_GMP
+fi  
+
+if [ ! -e ./$SRC_GMP ]; then
+  echo Unpacking $SRC_GMP
+  tar -xjf $SRC_GMP.tar.bz2 || exit 1
+else
+  echo Skipped unpacking $SRC_GMP
+fi
+
+if [ ! -e ./$SRC_GMP-build ]; then
+  echo Building $SRC_GMP
+  mkdir -p $SRC_GMP-build
+  cd $SRC_GMP-build
+  ../$SRC_GMP/configure --prefix=$PREFIX || exit 1
+  make || exit 1
+  make check || exit 1
+  make install || exit 1
+  cd ..
+else
+  echo $SRC_GMP is already built.
+fi
+
+# ---------------------------------------------------------------
+# 3. MPFR bauen und installieren
+# ---------------------------------------------------------------
+if [ ! -e $SRC_MPFR.tar.bz2 ]; then
+  echo Downloading $SRC_MPFR
+  wget http://www.mpfr.org/mpfr-current/$SRC_MPFR.tar.bz2 || exit 1
+else
+  echo Skipped downloading $SRC_MPFR
+fi  
+
+if [ ! -e ./$SRC_MPFR ]; then
+  echo Unpacking $SRC_MPFR
+  tar -xjf $SRC_MPFR.tar.bz2 || exit 1
+else
+  echo Skipped unpacking $SRC_MPFR
+fi
+
+if [ ! -e ./$SRC_MPFR-build ]; then
+  echo Building $SRC_MPFR
+  mkdir -p $SRC_MPFR-build
+  cd $SRC_MPFR-build
+  ../$SRC_MPFR/configure --prefix=$PREFIX || exit 1
+  make || exit 1
+  make check || exit 1
+  make install || exit 1
+  cd ..
+else
+  echo $SRC_MPFR is already built.
+fi
+
+# ---------------------------------------------------------------
+# 4. GCC & newlib bauen und installieren
+# ---------------------------------------------------------------
+if [ ! -e $SRC_NEWLIB.tar.gz ]; then
+  echo Downloading $SRC_NEWLIB
+  wget ftp://sources.redhat.com/pub/newlib/$SRC_NEWLIB.tar.gz || exit 1
+else
+  echo Skipped downloading $SRC_NEWLIB
+fi  
+
+if [ ! -e ./$SRC_NEWLIB ]; then
+  echo Unpacking $SRC_NEWLIB
+  tar -xzf $SRC_NEWLIB.tar.gz || exit 1
+  if [ -e  $SRC_NEWLIB-jens.patch ]; then
+    echo Patching $SRC_NEWLIB
+    patch -p0 < $SRC_NEWLIB-jens.patch || exit 1
+  fi	
+else
+  echo Skipped unpacking $SRC_NEWLIB
+fi
+
+if [ ! -e $SRC_GCC.tar.bz2 ]; then
+  echo Downloading $SRC_GCC
+  wget ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/ftp.gnu.org/gcc/$SRC_GCC/$SRC_GCC.tar.bz2 || exit 1
+else
+  echo Skipped downloading $SRC_GCC
+fi  
+
+if [ ! -e ./$SRC_GCC ]; then
+  echo Unpacking $SRC_GCC
+  tar -xjf $SRC_GCC.tar.bz2 || exit 1
+  cd ./$SRC_GCC
+  ln -sf ../$SRC_NEWLIB/newlib/ .
+  cd ..
+else
+  echo Skipped unpacking $SRC_GCC
+fi
+
+if [ ! -e ./$SRC_GCC-build ]; then
+  echo Building $SRC_GCC
+  mkdir -p $SRC_GCC-build
+  cd $SRC_GCC-build
+  ../$SRC_GCC/configure --target=$TARGET --prefix=$PREFIX --with-float=soft --with-newlib --verbose --enable-languages="c,c++" || exit 1
+  LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PREFIX/lib make all || exit 1
+  make info || exit 1
+  make install || exit 1
+  cd ..
+  echo $PREFIX/lib >>/etc/ld.so.conf.d/local.conf
+  ldconfig
+else
+  echo $SRC_GCC is already built.
+fi