diff --git a/toolchain/make.sh b/toolchain/make.sh
index 477973b..50a29ee 100644
--- a/toolchain/make.sh
+++ b/toolchain/make.sh
@@ -8,6 +8,7 @@ SRC_NEWLIB=newlib-1.20.0
 SRC_GMP=gmp-4.3.2
 SRC_MPFR=mpfr-3.1.2
 SRC_MPC=mpc-1.0.1
+SRC_GDB=gdb-7.12
 
 # ---------------------------------------------------------------
 # 10. Binutils bauen und installieren
@@ -181,5 +182,34 @@ else
   echo $SRC_GCC is already built.
 fi
 
+# ---------------------------------------------------------------
+# 50. GDB bauen und installieren
+# ---------------------------------------------------------------
+if [ ! -e $SRC_GDB.tar.bz2 ]; then
+  echo Downloading $SRC_GDB
+  wget ftp://ftp.gnu.org/gnu/gdb/$SRC_GDB.tar.xz || exit 1
+else
+  echo Skipped downloading $SRC_GDB
+fi  
+
+if [ ! -e ./$SRC_GDB ]; then
+  echo Unpacking $SRC_GDB
+  tar -xJf $SRC_GDB.tar.xz || exit 1
+else
+  echo Skipped unpacking $SRC_GDB
+fi
+
+if [ ! -e ./$SRC_GDB-build ]; then
+  echo Building $SRC_GDB
+  mkdir -p $SRC_GDB-build
+  cd $SRC_GDB-build
+  ../$SRC_GDB/configure --target=$TARGET --prefix=$PREFIX || exit 1
+  make || exit 1
+  make install || exit 1
+  cd ..
+else
+  echo $SRC_GDB is already built.
+fi
+
 echo Finished building toolchain.