diff --git a/src/05_prepare_glibc.sh b/src/05_prepare_glibc.sh
deleted file mode 100755
index d82603b8d..000000000
--- a/src/05_prepare_glibc.sh
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/bin/sh
-
-echo "*** PREPARE GLIBC BEGIN ***"
-
-SRC_DIR=$(pwd)
-
-# Save the kernel installation directory.
-KERNEL_INSTALLED=$(pwd)/work/kernel/kernel_installed
-
-cd work/glibc
-
-echo "Preparing glibc. This may take a while..."
-
-rm -rf glibc_prepared
-cp -r glibc_installed glibc_prepared
-
-cd glibc_prepared
-
-# Create custom 'usr' area and link it with some of the kernel header directories.
-# BusyBox compilation process uses these linked directories. The following
-# directories are affected:
-#
-# usr (glibc)
-# |
-# +--include (glibc)
-# |  |
-# |  +--asm (kernel)
-# |  |
-# |  +--asm-generic (kernel)
-# |  |
-# |  +--linux (kernel)
-# |  |
-# |  +--mtd (kernel)
-# |
-# +--lib (glibc)
-
-mkdir -p usr
-cd usr
-
-ln -s ../include include
-ln -s ../lib lib
-
-cd ../include
-
-ln -s $KERNEL_INSTALLED/include/linux linux
-ln -s $KERNEL_INSTALLED/include/asm asm
-ln -s $KERNEL_INSTALLED/include/asm-generic asm-generic
-ln -s $KERNEL_INSTALLED/include/mtd mtd
-
-cd $SRC_DIR
-
-echo "*** PREPARE GLIBC END ***"
-
diff --git a/src/05_prepare_sysroot.sh b/src/05_prepare_sysroot.sh
new file mode 100755
index 000000000..501f1e7ea
--- /dev/null
+++ b/src/05_prepare_sysroot.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+
+echo "*** PREPARE SYSROOT BEGIN ***"
+
+SRC_DIR=$(pwd)
+
+cd work
+
+echo "Cleaning existing sysroot. This may take a while..."
+rm -rf sysroot
+rm -rf sysroot.specs
+
+echo "Preparing glibc. This may take a while..."
+cp -r glibc/glibc_installed sysroot
+cd sysroot
+
+# Create custom 'usr' area and link it with some of the kernel header directories.
+# BusyBox compilation process uses these linked directories. The following
+# directories are affected:
+#
+# usr (glibc)
+# |
+# +--include (glibc)
+# |  |
+# |  +--asm (kernel)
+# |  |
+# |  +--asm-generic (kernel)
+# |  |
+# |  +--linux (kernel)
+# |  |
+# |  +--mtd (kernel)
+# |
+# +--lib (glibc)
+
+mkdir -p usr
+
+ln -s ../include usr/include
+ln -s ../lib usr/lib
+
+ln -s ../../kernel/kernel_installed/include/linux include/linux
+ln -s ../../kernel/kernel_installed/include/asm include/asm
+ln -s ../../kernel/kernel_installed/include/asm-generic include/asm-generic
+ln -s ../../kernel/kernel_installed/include/mtd include/mtd
+
+cd ..
+
+echo "generating sysroot.specs"
+SYSROOT="$PWD/sysroot"
+
+# gcc has a "internal" path that needs to be added to find the static versions of libgcc_*
+GCC_INTERNAL_PATH=$(dirname $(gcc -print-libgcc-file-name))
+
+cat << CEOF > sysroot.specs
+*link_libgcc:
+-L$SYSROOT/lib -L$SYSROOT/lib64 -L$SYSROOT/usr/lib -L$SYSROOT/usr/lib64 -L$SYSROOT/usr/local/lib -L$SYSROOT/usr/local/lib64 -L$GCC_INTERNAL_PATH
+CEOF
+
+cd $SRC_DIR
+
+echo "*** PREPARE SYSROOT END ***"
+
diff --git a/src/07_build_busybox.sh b/src/07_build_busybox.sh
index 03c3761be..aa9de0197 100755
--- a/src/07_build_busybox.sh
+++ b/src/07_build_busybox.sh
@@ -13,8 +13,8 @@ NUM_CORES=$(grep ^processor /proc/cpuinfo | wc -l)
 # Calculate the number of 'make' jobs to be used later.
 NUM_JOBS=$((NUM_CORES * JOB_FACTOR))
 
-# Remember the glibc installation area.
-GLIBC_PREPARED=$(pwd)/work/glibc/glibc_prepared
+# Remember the sysroot
+SYSROOT=$(pwd)/work/sysroot
 
 cd work/busybox
 
@@ -53,10 +53,10 @@ fi
 
 # This variable holds the full path to the glibc installation area as quoted string.
 # All back slashes are escaped (/ => \/) in order to keep the 'sed' command stable.
-GLIBC_PREPARED_ESCAPED=$(echo \"$GLIBC_PREPARED\" | sed 's/\//\\\//g')
+SYSROOT_ESCAPED=$(echo \"$SYSROOT\" | sed 's/\//\\\//g')
 
 # Now we tell BusyBox to use the glibc prepared area.
-sed -i "s/.*CONFIG_SYSROOT.*/CONFIG_SYSROOT=$GLIBC_PREPARED_ESCAPED/" .config
+sed -i "s/.*CONFIG_SYSROOT.*/CONFIG_SYSROOT=$SYSROOT_ESCAPED/" .config
 
 # Read the 'CFLAGS' property from '.config'
 CFLAGS="$(grep -i ^CFLAGS .config | cut -f2 -d'=')"
diff --git a/src/09_generate_rootfs.sh b/src/09_generate_rootfs.sh
index e8485fe97..37c07534a 100755
--- a/src/09_generate_rootfs.sh
+++ b/src/09_generate_rootfs.sh
@@ -4,8 +4,8 @@ echo "*** GENERATE ROOTFS BEGIN ***"
 
 SRC_ROOT=$(pwd)
 
-# Remember the glibc prepared folder.
-GLIBC_PREPARED=$(pwd)/work/glibc/glibc_prepared
+# Remember the sysroot
+SYSROOT=$(pwd)/work/sysroot
 
 # Remember the BysyBox install folder.
 BUSYBOX_INSTALLED=$(pwd)/work/busybox/busybox_installed
@@ -44,22 +44,22 @@ fi
 BUSYBOX_ARCH=$(file bin/busybox | cut -d' '  -f3)
 if [ "$BUSYBOX_ARCH" = "64-bit" ] ; then
   mkdir lib64
-  cp $GLIBC_PREPARED/lib/ld-linux* lib64
+  cp $SYSROOT/lib/ld-linux* lib64
   echo "Dynamic loader is accessed via '/lib64'."
 else
-  cp $GLIBC_PREPARED/lib/ld-linux* lib
+  cp $SYSROOT/lib/ld-linux* lib
   echo "Dynamic loader is accessed via '/lib'."
 fi
 
 # Copy all necessary 'glibc' libraries to '/lib' BEGIN.
 
 # BusyBox has direct dependencies on these libraries.
-cp $GLIBC_PREPARED/lib/libm.so.6 lib
-cp $GLIBC_PREPARED/lib/libc.so.6 lib
+cp $SYSROOT/lib/libm.so.6 lib
+cp $SYSROOT/lib/libc.so.6 lib
 
 # These libraries are necessary for the DNS resolving.
-cp $GLIBC_PREPARED/lib/libresolv.so.2 lib
-cp $GLIBC_PREPARED/lib/libnss_dns.so.2 lib
+cp $SYSROOT/lib/libresolv.so.2 lib
+cp $SYSROOT/lib/libnss_dns.so.2 lib
 
 # Copy all necessary 'glibc' libraries to '/lib' END.
 
diff --git a/src/build_minimal_linux_live.sh b/src/build_minimal_linux_live.sh
index 82fae6b4b..1d32a3c14 100755
--- a/src/build_minimal_linux_live.sh
+++ b/src/build_minimal_linux_live.sh
@@ -1,16 +1,6 @@
 #!/bin/sh
 
-time sh 00_clean.sh
-time sh 01_get_kernel.sh
-time sh 02_build_kernel.sh
-time sh 03_get_glibc.sh
-time sh 04_build_glibc.sh
-time sh 05_prepare_glibc.sh
-time sh 06_get_busybox.sh
-time sh 07_build_busybox.sh
-time sh 08_prepare_src.sh
-time sh 09_generate_rootfs.sh
-time sh 10_pack_rootfs.sh
-time sh 11_get_syslinux.sh
-time sh 12_generate_iso.sh
-
+for script in $(ls | grep '^[0-9]*_.*.sh'); do
+  echo "$script"
+  time sh "$script"
+done
diff --git a/src/minimal_overlay/bundles/cf_cli/01_get.sh b/src/minimal_overlay/bundles/cf_cli/01_get.sh
index ae47f0360..534e2495c 100755
--- a/src/minimal_overlay/bundles/cf_cli/01_get.sh
+++ b/src/minimal_overlay/bundles/cf_cli/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 #DOWNLOAD_URL=$(grep -i CLOUD_FOUNDRY_CLI_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -32,11 +29,11 @@ fi
 
 # Delete folder with previously prepared cloud foundry cli.
 echo "Removing cloud foundry cli work area. This may take a while..."
-rm -rf ../../work/overlay/clofo
-mkdir ../../work/overlay/clofo
+rm -rf $WORK_DIR/overlay/clofo
+mkdir $WORK_DIR/overlay/clofo
 
 # Copy cf-cli.tgz to folder 'work/overlay/clofo'.
-cp cf-cli.tgz ../../work/overlay/clofo
+cp cf-cli.tgz $WORK_DIR/overlay/clofo
 
 cd $SRC_DIR
 
diff --git a/src/minimal_overlay/bundles/cf_cli/02_install.sh b/src/minimal_overlay/bundles/cf_cli/02_install.sh
index 4a125cace..70314f276 100755
--- a/src/minimal_overlay/bundles/cf_cli/02_install.sh
+++ b/src/minimal_overlay/bundles/cf_cli/02_install.sh
@@ -2,17 +2,14 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 echo "Removing old cloud foundry artifacts. This may take a while..."
-rm -rf $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed
-mkdir -p $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed/opt/clofo
-mkdir -p $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed/bin
+rm -rf $WORK_DIR/overlay/clofo/clofo_installed
+mkdir -p $WORK_DIR/overlay/clofo/clofo_installed/opt/clofo
+mkdir -p $WORK_DIR/overlay/clofo/clofo_installed/bin
 
-cd $MAIN_SRC_DIR/work/overlay/clofo
+cd $WORK_DIR/overlay/clofo
 
 cp $MAIN_SRC_DIR/source/overlay/cf-cli.tgz .
 
@@ -20,14 +17,13 @@ tar -xvf cf-cli.tgz
 rm -f LICENSE NOTICE cf-cli.tgz
 chmod +rx cf
 
-cp cf $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed/opt/clofo/cf
+cp cf $WORK_DIR/overlay/clofo/clofo_installed/opt/clofo/cf
 
-cd $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed
+cd $WORK_DIR/overlay/clofo/clofo_installed
 
 ln -s ../opt/clofo/cf bin/cf
 
-cp -r $MAIN_SRC_DIR/work/overlay/clofo/clofo_installed/* \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/clofo/clofo_installed/* $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "cloud foundry cli has been installed."
 
diff --git a/src/minimal_overlay/bundles/dropbear/01_get.sh b/src/minimal_overlay/bundles/dropbear/01_get.sh
index 4276c98c2..bcf116a03 100755
--- a/src/minimal_overlay/bundles/dropbear/01_get.sh
+++ b/src/minimal_overlay/bundles/dropbear/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 DOWNLOAD_URL=$(grep -i DROPBEAR_SOURCE_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -33,12 +30,12 @@ fi
 
 # Delete folder with previously extracted Dropbear.
 echo "Removing Dropbear work area. This may take a while..."
-rm -rf ../../work/overlay/dropbear
-mkdir ../../work/overlay/dropbear
+rm -rf $WORK_DIR/overlay/dropbear
+mkdir $WORK_DIR/overlay/dropbear
 
 # Extract Dropbear to folder 'work/overlay/dropbear'.
 # Full path will be something like 'work/overlay/dropbear/dropbear-2016.73'.
-tar -xvf $ARCHIVE_FILE -C ../../work/overlay/dropbear
+tar -xvf $ARCHIVE_FILE -C $WORK_DIR/overlay/dropbear
 
 cd $SRC_DIR
 
diff --git a/src/minimal_overlay/bundles/dropbear/02_build.sh b/src/minimal_overlay/bundles/dropbear/02_build.sh
index 9fe2db003..bf8469399 100755
--- a/src/minimal_overlay/bundles/dropbear/02_build.sh
+++ b/src/minimal_overlay/bundles/dropbear/02_build.sh
@@ -2,107 +2,83 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-# Read the 'JOB_FACTOR' property from '.config'
-JOB_FACTOR="$(grep -i ^JOB_FACTOR $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
+cd $WORK_DIR/overlay/dropbear
 
-# Read the 'CFLAGS' property from '.config'
-CFLAGS="$(grep -i ^CFLAGS $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
-
-# Find the number of available CPU cores.
-NUM_CORES=$(grep ^processor /proc/cpuinfo | wc -l)
-
-# Calculate the number of 'make' jobs to be used later.
-NUM_JOBS=$((NUM_CORES * JOB_FACTOR))
-
-if [ ! -d $MAIN_SRC_DIR/work/glibc/glibc_prepared ] ; then
-  echo "Cannot continue - Dropbear SSH depends on GLIBC. Please buld GLIBC first."
-  exit 1
-fi
-
-cd $MAIN_SRC_DIR/work/overlay/dropbear
+DESTDIR="$PWD/dropbear_installed"
 
 # Change to the Dropbear source directory which ls finds, e.g. 'dropbear-2016.73'.
 cd $(ls -d dropbear-*)
 
 echo "Preparing Dropbear work area. This may take a while..."
-make clean -j $NUM_JOBS 2>/dev/null
-
-rm -rf ../dropbear_installed
+make -j $NUM_JOBS clean
+rm -rf $DESTDIR
 
 echo "Configuring Dropbear..."
 ./configure \
-  --prefix=$MAIN_SRC_DIR/work/overlay/dropbear/dropbear_installed \
+  --prefix=/usr \
   --disable-zlib \
   --disable-loginfunc \
-  CFLAGS="$CFLAGS"
+  CC="$CC" \
+  CFLAGS="$CFLAGS" \
+  LDFLAGS="$LDFLAGS"
 
 echo "Building Dropbear..."
 make -j $NUM_JOBS
 
 echo "Installing Dropbear..."
-make install -j $NUM_JOBS
+make -j $NUM_JOBS install DESTDIR="$DESTDIR"
 
-mkdir -p ../dropbear_installed/lib
+mkdir -p $DESTDIR/lib
 
 # Copy all dependent GLIBC libraries.
-cp $MAIN_SRC_DIR/work/glibc/glibc_prepared/lib/libnsl.so.1 ../dropbear_installed/lib
-cp $MAIN_SRC_DIR/work/glibc/glibc_prepared/lib/libnss_compat.so.2 ../dropbear_installed/lib
-cp $MAIN_SRC_DIR/work/glibc/glibc_prepared/lib/libutil.so.1 ../dropbear_installed/lib
-cp $MAIN_SRC_DIR/work/glibc/glibc_prepared/lib/libcrypt.so.1 ../dropbear_installed/lib
+cp $SYSROOT/lib/libnsl.so.1 $DESTDIR/lib
+cp $SYSROOT/lib/libnss_compat.so.2 $DESTDIR/lib
+cp $SYSROOT/lib/libutil.so.1 $DESTDIR/lib
+cp $SYSROOT/lib/libcrypt.so.1 $DESTDIR/lib
 
-mkdir -p ../dropbear_installed/etc/dropbear
+mkdir -p $DESTDIR/etc/dropbear
 
 # Create Dropbear SSH configuration BEGIN
 
-# Create RSA key.
-../dropbear_installed/bin/dropbearkey \
-  -t rsa \
-  -f ../dropbear_installed/etc/dropbear/dropbear_rsa_host_key 
-
-# Create DSS key.
-../dropbear_installed/bin/dropbearkey \
-  -t dss \
-  -f ../dropbear_installed/etc/dropbear/dropbear_dss_host_key 
-
-# Create ECDSA key.
-../dropbear_installed/bin/dropbearkey \
-  -t ecdsa \
-  -f ../dropbear_installed/etc/dropbear/dropbear_ecdsa_host_key 
+for key_type in rsa dss ecdsa; do
+  echo "generating $key_type host key"
+  $DESTDIR/usr/bin/dropbearkey \
+    -t $key_type \
+    -f $DESTDIR/etc/dropbear/dropbear_${key_type}_host_key
+done
 
 # Create user/group configuration files.
-touch ../dropbear_installed/etc/passwd
-touch ../dropbear_installed/etc/group
+touch $DESTDIR/etc/passwd
+touch $DESTDIR/etc/group
 
 # Add group 0 for root.
 echo "root:x:0:" \
-  > ../dropbear_installed/etc/group
+  > $DESTDIR/etc/group
 
 # Add user root with password 'toor'.
 echo "root:AprZpdBUhZXss:0:0:Minimal Root,,,:/root:/bin/sh" \
-  > ../dropbear_installed/etc/passwd
+  > $DESTDIR/etc/passwd
 
 # Create home folder for root user.
-mkdir -p ../dropbear_installed/root
+mkdir -p $DESTDIR/root
 
 # Create Dropbear SSH configuration END
 
 echo "Reducing Dropbear size..."
 strip -g \
-  ../dropbear_installed/bin/* \
-  ../dropbear_installed/sbin/* \
-  ../dropbear_installed/lib/*
+  $DESTDIR/usr/bin/* \
+  $DESTDIR/usr/sbin/* \
+  $DESTDIR/lib/*
 
-cp -r \
-  ../dropbear_installed/etc \
-  ../dropbear_installed/bin \
-  ../dropbear_installed/sbin \
-  ../dropbear_installed/lib \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+ROOTFS=$WORK_DIR/src/minimal_overlay/rootfs
+
+mkdir -p $ROOTFS/usr
+cp -r $DESTDIR/etc $ROOTFS
+cp -r $DESTDIR/usr/bin $ROOTFS/usr
+cp -r $DESTDIR/usr/sbin $ROOTFS/usr
+cp -r $DESTDIR/lib $ROOTFS
 
 echo "Dropbear has been installed."
 
diff --git a/src/minimal_overlay/bundles/felix/01_get.sh b/src/minimal_overlay/bundles/felix/01_get.sh
index 2f0133189..0a1707b56 100755
--- a/src/minimal_overlay/bundles/felix/01_get.sh
+++ b/src/minimal_overlay/bundles/felix/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 DOWNLOAD_URL=$(grep -i FELIX_SOURCE_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -33,12 +30,12 @@ fi
 
 # Delete folder with previously extracted Felix.
 echo "Removing Apache Felix work area. This may take a while..."
-rm -rf ../../work/overlay/felix
-mkdir ../../work/overlay/felix
+rm -rf $WORK_DIR/overlay/felix
+mkdir $WORK_DIR/overlay/felix
 
 # Extract Felix to folder 'work/overlay/felix'.
 # Full path will be something like 'work/overlay/felix/felix-framework-5.4.0'.
-tar -xvf $ARCHIVE_FILE -C ../../work/overlay/felix
+tar -xvf $ARCHIVE_FILE -C $WORK_DIR/overlay/felix
 
 cd $SRC_DIR
 
diff --git a/src/minimal_overlay/bundles/felix/02_install.sh b/src/minimal_overlay/bundles/felix/02_install.sh
index 0b90d86bf..a90cdf4ef 100755
--- a/src/minimal_overlay/bundles/felix/02_install.sh
+++ b/src/minimal_overlay/bundles/felix/02_install.sh
@@ -2,17 +2,14 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 echo "Removing old Apache Felix artifacts. This may take a while..."
-rm -rf $MAIN_SRC_DIR/work/overlay/felix/felix_installed
-mkdir -p $MAIN_SRC_DIR/work/overlay/felix/felix_installed/opt/felix
-mkdir -p $MAIN_SRC_DIR/work/overlay/felix/felix_installed/bin
+rm -rf $WORK_DIR/overlay/felix/felix_installed
+mkdir -p $WORK_DIR/overlay/felix/felix_installed/opt/felix
+mkdir -p $WORK_DIR/overlay/felix/felix_installed/bin
 
-cd $MAIN_SRC_DIR/work/overlay/felix
+cd $WORK_DIR/overlay/felix
 cd $(ls -d felix-*)
 
 cat << CEOF > bin/felix-start.sh
@@ -25,14 +22,14 @@ CEOF
 
 chmod +rx bin/felix-start.sh
 
-cp -r * $MAIN_SRC_DIR/work/overlay/felix/felix_installed/opt/felix
+cp -r * $WORK_DIR/overlay/felix/felix_installed/opt/felix
 
-cd $MAIN_SRC_DIR/work/overlay/felix/felix_installed
+cd $WORK_DIR/overlay/felix/felix_installed
 
 ln -s ../opt/felix/bin/felix-start.sh bin/felix-start
 
-cp -r $MAIN_SRC_DIR/work/overlay/felix/felix_installed/* \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/felix/felix_installed/* \
+  $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "Apache Felix has been installed."
 
diff --git a/src/minimal_overlay/bundles/glibc_full/bundle.sh b/src/minimal_overlay/bundles/glibc_full/bundle.sh
index 4d64d1578..3d9010ccc 100755
--- a/src/minimal_overlay/bundles/glibc_full/bundle.sh
+++ b/src/minimal_overlay/bundles/glibc_full/bundle.sh
@@ -2,26 +2,23 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-if [ ! -d $MAIN_SRC_DIR/work/glibc/glibc_prepared ] ; then
+if [ ! -d $SYSROOT ] ; then
   echo "Cannot continue - GLIBC is missing. Please buld GLIBC first."
   exit 1
 fi
 
 echo "Preparing the overlay glibc folder. This may take a while..."
-rm -rf $MAIN_SRC_DIR/work/overlay/glibc
-mkdir -p $MAIN_SRC_DIR/work/overlay/glibc/lib
+rm -rf $WORK_DIR/overlay/glibc
+mkdir -p $WORK_DIR/overlay/glibc/lib
 
-cd $MAIN_SRC_DIR/work/glibc/glibc_prepared/lib
+cd $SYSROOT
 
-find . -type l -exec cp {} $MAIN_SRC_DIR/work/overlay/glibc/lib \;
+find . -type l -exec cp {} $WORK_DIR/overlay/glibc/lib \;
 echo "All libraries have been copied."
 
-cd $MAIN_SRC_DIR/work/overlay/glibc/lib
+cd $WORK_DIR/overlay/glibc/lib
 
 for FILE_DEL in $(ls *.so)
 do
@@ -38,10 +35,8 @@ echo "Duplicate libraries have been replaced with soft links."
 strip -g *
 echo "All libraries have been optimized for size."
 
-cp -r $MAIN_SRC_DIR/work/overlay/glibc/lib \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/glibc/lib $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "All GNU C libraries have been installed."
 
 cd $SRC_DIR
-
diff --git a/src/minimal_overlay/bundles/java/bundle.sh b/src/minimal_overlay/bundles/java/bundle.sh
index dcffd407d..887561b79 100755
--- a/src/minimal_overlay/bundles/java/bundle.sh
+++ b/src/minimal_overlay/bundles/java/bundle.sh
@@ -18,10 +18,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Read the 'JAVA_ARCHIVE' property from '.config'
 JAVA_ARCHIVE="$(grep -i ^JAVA_ARCHIVE $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
@@ -34,25 +31,25 @@ elif [ ! -f "$JAVA_ARCHIVE" ] ; then
   exit 1
 fi
 
-rm -rf $MAIN_SRC_DIR/work/overlay/java
-mkdir -p $MAIN_SRC_DIR/work/overlay/java/opt
+rm -rf $WORK_DIR/overlay/java
+mkdir -p $WORK_DIR/overlay/java/opt
 
 tar -xvf \
   $JAVA_ARCHIVE \
-  -C $MAIN_SRC_DIR/work/overlay/java/opt
+  -C $WORK_DIR/overlay/java/opt
 
-cd $MAIN_SRC_DIR/work/overlay/java/opt
+cd $WORK_DIR/overlay/java/opt
 mv $(ls -d *) java
 
-mkdir $MAIN_SRC_DIR/work/overlay/java/bin
+mkdir $WORK_DIR/overlay/java/bin
 
 for FILE in $(ls java/bin)
 do
   ln -s ../opt/java/bin/$FILE ../bin/$FILE
 done
 
-cp -r $MAIN_SRC_DIR/work/overlay/java/* \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/java/* \
+  $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "Java has been installed."
 
diff --git a/src/minimal_overlay/bundles/links/01_get.sh b/src/minimal_overlay/bundles/links/01_get.sh
index e2a9f4da6..f245643c5 100755
--- a/src/minimal_overlay/bundles/links/01_get.sh
+++ b/src/minimal_overlay/bundles/links/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 DOWNLOAD_URL=$(grep -i LINKS_SOURCE_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -33,12 +30,12 @@ fi
 
 # Delete folder with previously extracted Links.
 echo "Removing Links work area. This may take a while..."
-rm -rf ../../work/overlay/links
-mkdir ../../work/overlay/links
+rm -rf $WORK_DIR/overlay/links
+mkdir $WORK_DIR/overlay/links
 
 # Extract Links to folder 'work/overlay/links'.
 # Full path will be something like 'work/overlay/links/links-2.12'.
-tar -xvf $ARCHIVE_FILE -C ../../work/overlay/links
+tar -xvf $ARCHIVE_FILE -C $WORK_DIR/overlay/links
 
 cd $SRC_DIR
 
diff --git a/src/minimal_overlay/bundles/links/02_build.sh b/src/minimal_overlay/bundles/links/02_build.sh
index 7a23f778f..4d77ce1e4 100755
--- a/src/minimal_overlay/bundles/links/02_build.sh
+++ b/src/minimal_overlay/bundles/links/02_build.sh
@@ -2,57 +2,41 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-# Read the 'JOB_FACTOR' property from '.config'
-JOB_FACTOR="$(grep -i ^JOB_FACTOR $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
+cd $WORK_DIR/overlay/links
 
-# Read the 'CFLAGS' property from '.config'
-CFLAGS="$(grep -i ^CFLAGS $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
-
-# Find the number of available CPU cores.
-NUM_CORES=$(grep ^processor /proc/cpuinfo | wc -l)
-
-# Calculate the number of 'make' jobs to be used later.
-NUM_JOBS=$((NUM_CORES * JOB_FACTOR))
-
-cd $MAIN_SRC_DIR/work/overlay/links
+DESTDIR="$PWD/links_installed"
 
 # Change to the Links source directory which ls finds, e.g. 'links-2.12'.
 cd $(ls -d links-*)
 
 echo "Preparing Links work area. This may take a while..."
-make clean -j $NUM_JOBS 2>/dev/null
+make -j $NUM_JOBS clean
 
-rm -rf ../links_installed
+rm -rf $DESTDIR
 
 echo "Configuring Links..."
-./configure \
-  --prefix=../links_installed \
+CC="$CC" CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS" LDFLAGS="$LDFLAGS" ./configure \
+  --prefix=/usr \
   --disable-graphics \
   --disable-utf8 \
   --without-ipv6 \
-  --without-ssl \
-  --without-zlib \
-  --without-x
-
-# Set CFLAGS directly in Makefile.
-sed -i "s/^CFLAGS = .*/CFLAGS = $CFLAGS/" Makefile
+  --without-ssl
 
 echo "Building Links..."
 make -j $NUM_JOBS
 
 echo "Installing Links..."
-make install -j $NUM_JOBS
+make -j $NUM_JOBS install DESTDIR=$DESTDIR
 
 echo "Reducing Links size..."
-strip -g ../links_installed/bin/* 2>/dev/null
+strip -g $DESTDIR/usr/bin/*
 
-cp -r ../links_installed/bin \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+ROOTFS="$WORK_DIR/src/minimal_overlay/rootfs"
+
+mkdir -p "$ROOTFS/usr/bin"
+cp -r $DESTDIR/usr/bin/* $ROOTFS/usr/bin/
 
 echo "Links has been installed."
 
diff --git a/src/minimal_overlay/bundles/lua/01_get.sh b/src/minimal_overlay/bundles/lua/01_get.sh
index 1891f4c2f..b9182c5d3 100755
--- a/src/minimal_overlay/bundles/lua/01_get.sh
+++ b/src/minimal_overlay/bundles/lua/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 DOWNLOAD_URL=$(grep -i LUA_SOURCE_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -33,11 +30,11 @@ fi
 
 # Delete folder with previously extracted Lua.
 echo "Removing Lua work area. This may take a while..."
-rm -rf ../../work/overlay/lua
-mkdir ../../work/overlay/lua
+rm -rf $WORK_DIR/overlay/lua
+mkdir $WORK_DIR/overlay/lua
 
 # Extract lua to folder 'work/overlay/lua'.
 # Full path will be something like 'work/overlay/lua/lua-5.3.4'.
-tar -xvf $ARCHIVE_FILE -C ../../work/overlay/lua
+tar -xvf $ARCHIVE_FILE -C $WORK_DIR/overlay/lua
 
 cd $SRC_DIR
diff --git a/src/minimal_overlay/bundles/lua/02_build.sh b/src/minimal_overlay/bundles/lua/02_build.sh
index 9169d6a43..088c1b141 100755
--- a/src/minimal_overlay/bundles/lua/02_build.sh
+++ b/src/minimal_overlay/bundles/lua/02_build.sh
@@ -4,42 +4,32 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-# Read the 'JOB_FACTOR' property from '.config'
-JOB_FACTOR="$(grep -i ^JOB_FACTOR $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
+cd $WORK_DIR/overlay/lua
 
-# Read the 'CFLAGS' property from '.config'
-CFLAGS="$(grep -i ^CFLAGS $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
-
-# Find the number of available CPU cores.
-NUM_CORES=$(grep ^processor /proc/cpuinfo | wc -l)
-
-# Calculate the number of 'make' jobs to be used later.
-NUM_JOBS=$((NUM_CORES * JOB_FACTOR))
-
-cd $MAIN_SRC_DIR/work/overlay/lua
+DESTDIR="$PWD/lua_installed"
 
 # Change to the Lua source directory which ls finds, e.g. 'lua-5.3.4'.
 cd $(ls -d lua-*)
 
 echo "Preparing Lua work area. This may take a while..."
-make clean -j $NUM_JOBS 2>/dev/null
-rm -rf ../lua_installed
+# we install lua to /usr and not to /usr/local so we need to fix luaconf.h so lua can find modules, etc ...
+sed -i 's/#define LUA_ROOT.*/#define LUA_ROOT \"\/usr\/\"/' src/luaconf.h
+make -j $NUM_JOBS clean
+rm -rf $DESTDIR
 
 echo "Building Lua..."
-make posix -j $NUM_JOBS CFLAGS="$CFLAGS --sysroot=$MAIN_SRC_DIR/work/glibc/glibc_prepared/"
+make -j $NUM_JOBS posix CC="$CC" CFLAGS="$CFLAGS"
 
-make install -j $NUM_JOBS INSTALL_TOP=../../lua_installed/usr
+make -j $NUM_JOBS install INSTALL_TOP="$DESTDIR/usr"
 
 echo "Reducing Lua size..."
-strip -g ../lua_installed/bin/* 2>/dev/null
+strip -g $DESTDIR/usr/bin/* 2>/dev/null
 
-mkdir -p $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs/usr/
-cp -r ../lua_installed/usr/* $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs/usr
+ROOTFS="$WORK_DIR/src/minimal_overlay/rootfs"
+mkdir -p $ROOTFS/usr/
+cp -r $DESTDIR/usr/* $ROOTFS/usr/
 
 echo "Lua has been installed."
 
diff --git a/src/minimal_overlay/bundles/mll_utils/01_prepare.sh b/src/minimal_overlay/bundles/mll_utils/01_prepare.sh
index b8aa8d9c9..36b4db352 100755
--- a/src/minimal_overlay/bundles/mll_utils/01_prepare.sh
+++ b/src/minimal_overlay/bundles/mll_utils/01_prepare.sh
@@ -2,14 +2,11 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 echo "Preparing the Minimal Linux Live utilities folder. This may take a while..."
-rm -rf $MAIN_SRC_DIR/work/overlay/mll_utils
-mkdir -p $MAIN_SRC_DIR/work/overlay/mll_utils/sbin
+rm -rf $WORK_DIR/overlay/mll_utils
+mkdir -p $WORK_DIR/overlay/mll_utils/sbin
 
 echo "Miminal Linux Live utilities folder has been prepared."
 
diff --git a/src/minimal_overlay/bundles/mll_utils/02_disk_erase.sh b/src/minimal_overlay/bundles/mll_utils/02_disk_erase.sh
index 7c4671f4c..46d854c1a 100755
--- a/src/minimal_overlay/bundles/mll_utils/02_disk_erase.sh
+++ b/src/minimal_overlay/bundles/mll_utils/02_disk_erase.sh
@@ -2,17 +2,14 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-if [ ! -d "$MAIN_SRC_DIR/work/overlay/mll_utils" ] ; then
-  echo "The directory $MAIN_SRC_DIR/work/overlay/mll_utils does not exist. Cannot continue."
+if [ ! -d "$WORK_DIR/overlay/mll_utils" ] ; then
+  echo "The directory $WORK_DIR/overlay/mll_utils does not exist. Cannot continue."
   exit 1
 fi
 
-cd $MAIN_SRC_DIR/work/overlay/mll_utils
+cd $WORK_DIR/overlay/mll_utils
 
 # 'mll-disk-erase' BEGIN
 
diff --git a/src/minimal_overlay/bundles/mll_utils/03_installer.sh b/src/minimal_overlay/bundles/mll_utils/03_installer.sh
index 1bb460cae..6a5731574 100755
--- a/src/minimal_overlay/bundles/mll_utils/03_installer.sh
+++ b/src/minimal_overlay/bundles/mll_utils/03_installer.sh
@@ -2,17 +2,14 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-if [ ! -d "$MAIN_SRC_DIR/work/overlay/mll_utils" ] ; then
-  echo "The directory $MAIN_SRC_DIR/work/overlay/mll_utils does not exist. Cannot continue."
+if [ ! -d "$WORK_DIR/overlay/mll_utils" ] ; then
+  echo "The directory $WORK_DIR/overlay/mll_utils does not exist. Cannot continue."
   exit 1
 fi
 
-cd $MAIN_SRC_DIR/work/overlay/mll_utils
+cd $WORK_DIR/overlay/mll_utils
 
 # 'mll-install' BEGIN
 
@@ -102,30 +99,30 @@ chmod +rx sbin/mll-install
 
 # 'mll-install' END
 
-if [ ! -d "$MAIN_SRC_DIR/work/syslinux" ] ; then
+if [ ! -d "$WORK_DIR/syslinux" ] ; then
 echo "The installer depends on Syslinux which is missing. Cannot continue."
   exit 1
 fi;
 
-cd $MAIN_SRC_DIR/work/syslinux
+cd $WORK_DIR/syslinux
 cd $(ls -d syslinux-*)
 
 cp bios/extlinux/extlinux \
-  $MAIN_SRC_DIR/work/overlay/mll_utils/sbin
-mkdir -p $MAIN_SRC_DIR/work/overlay/mll_utils/opt/syslinux 
+  $WORK_DIR/overlay/mll_utils/sbin
+mkdir -p $WORK_DIR/overlay/mll_utils/opt/syslinux 
 cp bios/mbr/mbr.bin \
-  $MAIN_SRC_DIR/work/overlay/mll_utils/opt/syslinux
+  $WORK_DIR/overlay/mll_utils/opt/syslinux
 
 # Big mama hack - need to find proper workaround!!!
 # Both syslinux and extlinux are 32-bit executables which require 32-bit libs.
 # Possible solution 1 - build 32-bit GLIBC on demand.
 # Possible solution 2 - drop 32-bit MLL and provide 64-bit with multi-arch.
-mkdir -p $MAIN_SRC_DIR/work/overlay/mll_utils/lib
-mkdir -p $MAIN_SRC_DIR/work/overlay/mll_utils/usr/lib
+mkdir -p $WORK_DIR/overlay/mll_utils/lib
+mkdir -p $WORK_DIR/overlay/mll_utils/usr/lib
 cp /lib/ld-linux.so.2 \
-  $MAIN_SRC_DIR/work/overlay/mll_utils/lib
+  $WORK_DIR/overlay/mll_utils/lib
 cp /lib/i386-linux-gnu/libc.so.6 \
-  $MAIN_SRC_DIR/work/overlay/mll_utils/usr/lib
+  $WORK_DIR/overlay/mll_utils/usr/lib
 # Big mama hack - end.
 
 echo "Minimal Linux Live installer has been generated."
diff --git a/src/minimal_overlay/bundles/mll_utils/04_install.sh b/src/minimal_overlay/bundles/mll_utils/04_install.sh
index 5610549af..aa4593d30 100755
--- a/src/minimal_overlay/bundles/mll_utils/04_install.sh
+++ b/src/minimal_overlay/bundles/mll_utils/04_install.sh
@@ -2,19 +2,15 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
-if [ ! -d "$MAIN_SRC_DIR/work/overlay/mll_utils" ] ; then
-  echo "The directory $MAIN_SRC_DIR/work/overlay/mll_utils does not exist. Cannot continue."
+if [ ! -d "$WORK_DIR/overlay/mll_utils" ] ; then
+  echo "The directory $WORK_DIR/overlay/mll_utils does not exist. Cannot continue."
   exit 1
 fi
 
 # Copy all generated files to the source overlay folder.
-cp -r $MAIN_SRC_DIR/work/overlay/mll_utils/* \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/mll_utils/* $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "All MLL utilities have been installed."
 
diff --git a/src/minimal_overlay/bundles/nweb/bundle.sh b/src/minimal_overlay/bundles/nweb/bundle.sh
index 837b44a18..40dd54058 100755
--- a/src/minimal_overlay/bundles/nweb/bundle.sh
+++ b/src/minimal_overlay/bundles/nweb/bundle.sh
@@ -1,25 +1,22 @@
 #!/bin/sh
+
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
-
-# Read the 'CFLAGS' property from '.config'
-CFLAGS="$(grep -i ^CFLAGS $MAIN_SRC_DIR/.config | cut -f2 -d'=')"
+. ../../common.sh
 
 echo "removing previous work area"
-rm -rf $MAIN_SRC_DIR/work/overlay/nweb
-mkdir -p $MAIN_SRC_DIR/work/overlay/nweb
-cd $MAIN_SRC_DIR/work/overlay/nweb
+rm -rf $WORK_DIR/overlay/nweb
+mkdir -p $WORK_DIR/overlay/nweb
+cd $WORK_DIR/overlay/nweb
 
 set -x
+
 # nweb
-gcc $CFLAGS --sysroot=$MAIN_SRC_DIR/work/glibc/glibc_prepared/ $SRC_DIR/nweb23.c -o nweb
+$CC $CFLAGS $LDFLAGS $SRC_DIR/nweb23.c -o nweb
 
 # client
-#cc $CFLAGS $SRC_DIR/client.c -o client
+#$CC $CFLAGS $LDFLAGS $SRC_DIR/client.c -o client
+
 set +x
 
 echo "nweb has been build."
diff --git a/src/minimal_overlay/bundles/static_get/01_get.sh b/src/minimal_overlay/bundles/static_get/01_get.sh
index 4bad67ea3..ad1425db8 100755
--- a/src/minimal_overlay/bundles/static_get/01_get.sh
+++ b/src/minimal_overlay/bundles/static_get/01_get.sh
@@ -2,10 +2,7 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 # Grab everything after the '=' character.
 DOWNLOAD_URL=$(grep -i STATIC_GET_SOURCE_URL $MAIN_SRC_DIR/.config | cut -f2 -d'=')
@@ -30,11 +27,11 @@ fi
 
 # Delete folder with previously prepared static-get.
 echo "Removing static-get work area. This may take a while..."
-rm -rf ../../work/overlay/staget
-mkdir ../../work/overlay/staget
+rm -rf $WORK_DIR/overlay/staget
+mkdir $WORK_DIR/overlay/staget
 
 # Copy static-get to folder 'work/overlay/staget'.
-cp static-get.sh ../../work/overlay/staget
+cp static-get.sh $WORK_DIR/overlay/staget
 
 cd $SRC_DIR
 
diff --git a/src/minimal_overlay/bundles/static_get/02_install.sh b/src/minimal_overlay/bundles/static_get/02_install.sh
index 611a73ec5..59316a1f4 100755
--- a/src/minimal_overlay/bundles/static_get/02_install.sh
+++ b/src/minimal_overlay/bundles/static_get/02_install.sh
@@ -2,31 +2,28 @@
 
 SRC_DIR=$(pwd)
 
-# Find the main source directory
-cd ../../..
-MAIN_SRC_DIR=$(pwd)
-cd $SRC_DIR
+. ../../common.sh
 
 echo "Removing old static-get artifacts. This may take a while..."
-rm -rf $MAIN_SRC_DIR/work/overlay/staget/staget_installed
-mkdir -p $MAIN_SRC_DIR/work/overlay/staget/staget_installed/opt/staget
-mkdir -p $MAIN_SRC_DIR/work/overlay/staget/staget_installed/bin
+rm -rf $WORK_DIR/overlay/staget/staget_installed
+mkdir -p $WORK_DIR/overlay/staget/staget_installed/opt/staget
+mkdir -p $WORK_DIR/overlay/staget/staget_installed/bin
 
-cd $MAIN_SRC_DIR/work/overlay/staget
+cd $WORK_DIR/overlay/staget
 
 cp $MAIN_SRC_DIR/source/overlay/static-get.sh .
 
 chmod +rx static-get.sh
 
-cp static-get.sh $MAIN_SRC_DIR/work/overlay/staget/staget_installed/opt/staget
+cp static-get.sh $WORK_DIR/overlay/staget/staget_installed/opt/staget
 
-cd $MAIN_SRC_DIR/work/overlay/staget/staget_installed
+cd $WORK_DIR/overlay/staget/staget_installed
 
 ln -s ../opt/staget/static-get.sh bin/static-get
 ln -s ../opt/staget/static-get.sh bin/mll-get
 
-cp -r $MAIN_SRC_DIR/work/overlay/staget/staget_installed/* \
-  $MAIN_SRC_DIR/work/src/minimal_overlay/rootfs
+cp -r $WORK_DIR/overlay/staget/staget_installed/* \
+  $WORK_DIR/src/minimal_overlay/rootfs
 
 echo "static-get has been installed."
 
diff --git a/src/minimal_overlay/common.sh b/src/minimal_overlay/common.sh
new file mode 100755
index 000000000..9bda67606
--- /dev/null
+++ b/src/minimal_overlay/common.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# common code used by all bundles
+# should be included at the top of every *.sh file of each bundle
+
+export MAIN_SRC_DIR=$(realpath --no-symlinks $PWD/../../../)
+export WORK_DIR="$MAIN_SRC_DIR/work"
+export SRC_DIR=$(pwd)
+export CONFIG="$MAIN_SRC_DIR/.config"
+export SYSROOT="$WORK_DIR/sysroot"
+export SYSROOT_SPECS="$WORK_DIR/sysroot.specs"
+
+# Read the 'JOB_FACTOR' property from $CONFIG
+export JOB_FACTOR="$(grep -i ^JOB_FACTOR $CONFIG | cut -f2 -d'=')"
+
+# Read the 'CFLAGS' property from $CONFIG
+export CFLAGS="$(grep -i ^CFLAGS $CONFIG | cut -f2 -d'=')"
+
+# Find the number of available CPU cores
+export NUM_CORES="$(grep ^processor /proc/cpuinfo | wc -l)"
+
+# Calculate the number of make "jobs"
+export NUM_JOBS=$((NUM_CORES * JOB_FACTOR))
+
+# Ideally we would export MAKE at this point with -j etc to allow programs to just run $(MAKE) and not worry about extra flags that need to be passed
+#  export MAKE="${MAKE-make} -j $NUM_JOBS"
+
+# sysroot flags for the compiler
+
+#-Wl,-nostdlib is required to make ld / gcc ignore the host's /usr/lib and /lib
+ld_flags="-Wl,-nostdlib $(grep -- \"-L\" $SYSROOT_SPECS)"
+#-static-libgcc is neeeded since we don't have the gcc-libs in our sysroot
+gcc_flags="-specs=$SYSROOT_SPECS -static-libgcc"
+
+# $ld_flags is passed 2 times because sometimes bundles ignore one of the variables
+export CC="${CC-gcc} $gcc_flags $ld_flags"
+export CFLAGS="$CFLAGS"
+export LDFLAGS="$LDFLAGS $ld_flags"