diff --git a/CHANGELOG b/CHANGELOG
index 05efaa3..3a91f8a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,8 @@ changed:
 * improved and colorized wrapper error/warning/debug/info messages
 
 added:
+* p7zip sdk packaging script
+* a minimalistic xcrun tool
 * support for ccache symlinks
 * darling-dmg sdk packaging script
 * include path warnings for /usr/include and /usr/local/include
diff --git a/README.md b/README.md
index 8f0788e..d727170 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ You can turn this behavior off with `OSXCROSS_GCC_NO_STATIC_RUNTIME=1` (env).
 4. Copy the packaged SDK (\*.tar.\* or \*.pkg) on a USB Stick
 5. (On Linux/BSD) Copy or move the SDK into the tarballs/ directory of OSXCross
 
-\*\* Xcode 4.6, 5.0+, 6.0, and the 6.1 Betas are known to work.  
+\*\* Xcode up to 6.3.x is known to work; 7.x is not working (yet).  
 \*\*\* If you get a dialog with a crossed circle, ignore it, you don't need to install Xcode.
 
 Step 1. and 2. can be skipped if you have Xcode installed.
@@ -104,6 +104,13 @@ Step 1. and 2. can be skipped if you have Xcode installed.
 3. Run `./gen_sdk_package_darling_dmg.sh <xcode>.dmg`
 4. Copy or move the SDK into the tarballs/ directory
 
+##### Packing the SDK on Linux (and others), Method 3 (works with Xcode >= 4.3): #####
+
+1. Download Xcode like described in 'Packaging the SDK on Mac OS X'
+2. Ensure you have `clang` and `make` installed
+3. Run `./gen_sdk_package_darling_p7zip.sh <xcode>.dmg`
+4. Copy or move the SDK into the tarballs/ directory
+
 ### USAGE EXAMPLES: ###
 
 ##### Let's say you want to compile a file called test.cpp, then you can do this by running: #####
diff --git a/tools/gen_sdk_package_darling_dmg.sh b/tools/gen_sdk_package_darling_dmg.sh
index ab15640..acb397d 100755
--- a/tools/gen_sdk_package_darling_dmg.sh
+++ b/tools/gen_sdk_package_darling_dmg.sh
@@ -17,9 +17,13 @@ mkdir -p $BUILD_DIR
 
 require git
 require cmake
+require $MAKE
 require modinfo
 require fusermount
 
+[ -n "$CC" ] && require $CC
+[ -n "$CXX" ] && require $CXX
+
 set +e
 
 modinfo fuse &>/dev/null
@@ -34,7 +38,7 @@ set -e
 
 pushd $BUILD_DIR &>/dev/null
 
-if [ ! -f $TARGET_DIR/bin/darling-dmg ]; then
+if [ ! -f $TARGET_DIR/SDK/tools/bin/darling-dmg ]; then
   rm -f have_darling_dmg
 fi
 
@@ -45,8 +49,8 @@ git clone https://github.com/LubosD/darling-dmg.git
 pushd darling-dmg &>/dev/null
 mkdir -p build
 pushd build &>/dev/null
-cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$TARGET_DIR
-make -j $JOBS install
+cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$TARGET_DIR/SDK/tools
+$MAKE -j $JOBS install
 popd &>/dev/null
 popd &>/dev/null
 
@@ -65,5 +69,5 @@ function cleanup() {
 
 trap cleanup EXIT
 
-$TARGET_DIR/bin/darling-dmg $1 $TMP
+$TARGET_DIR/SDK/tools/bin/darling-dmg $1 $TMP
 XCODEDIR=$TMP ./tools/gen_sdk_package.sh
diff --git a/tools/gen_sdk_package_p7zip.sh b/tools/gen_sdk_package_p7zip.sh
new file mode 100755
index 0000000..93307b1
--- /dev/null
+++ b/tools/gen_sdk_package_p7zip.sh
@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+
+pushd "${0%/*}/.." &>/dev/null
+source tools/tools.sh
+
+if [ $PLATFORM == "Darwin" ]; then
+  echo "Use gen_sdk_package.sh on Mac OS X" 1>&2
+  exit 1
+fi
+
+if [ $# -eq 0 ]; then
+  echo "Usage: $0 <xcode.dmg>" 1>&2
+  exit 1
+fi
+
+case $1 in
+  /*) XCODEDMG="$1" ;;
+  *) XCODEDMG="$PWD/$1" ;;
+esac
+
+mkdir -p $BUILD_DIR
+
+require git
+require $MAKE
+
+[ -n "$CC" ] && require $CC
+[ -n "$CXX" ] && require $CXX
+
+pushd $BUILD_DIR &>/dev/null
+
+if [ ! -f $TARGET_DIR/SDK/tools/bin/7z ]; then
+  rm -f have_p7zip
+fi
+
+if [ ! -f "have_p7zip" ]; then
+
+rm -rf p7zip*
+git clone https://github.com/tpoechtrager/p7zip.git
+pushd p7zip &>/dev/null
+if [ -n "$CC" ] && [ -n "$CXX" ]; then
+  [[ $CC == *clang* ]] && CC="$CC -Qunused-arguments"
+  [[ $CXX == *clang* ]] && CXX="$CXX -Qunused-arguments"
+  $MAKE 7z -j $JOBS CC="$CC" CXX="$CXX"
+else
+  $MAKE 7z -j $JOBS
+fi
+$MAKE install DEST_HOME=$TARGET_DIR/SDK/tools
+find $TARGET_DIR/SDK/tools/share -type f -exec chmod 0664 {} \;
+popd &>/dev/null
+
+touch "have_p7zip"
+
+fi
+
+popd &>/dev/null
+
+#/tmp is prone to run out of space
+#TMP=$(mktemp -d /tmp/XXXXXXXXX)
+
+for i in {1..100}; do
+  TMP="tmp_$RANDOM"
+  [ -e $TMP ] && continue
+  mkdir $TMP && break
+done
+
+if [ ! -d $TMP ]; then
+  echo "cannot create $PWD/$TMP directory" 1>&2
+  exit 1
+fi
+
+function cleanup() {
+  popd &>/dev/null || true
+  rm -rf $TMP
+}
+
+trap cleanup EXIT
+
+pushd $TMP &>/dev/null
+
+set +e
+
+$TARGET_DIR/SDK/tools/bin/7z x \
+  $XCODEDMG \
+  "*/Xcode.app/Contents/Developer/Platforms/MacOSX.platform" \
+  "*/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain"
+
+[ $? -ne 0 -a $? -ne 2 ] && exit 1
+
+if [ -z "$(ls -A)" ]; then
+  $TARGET_DIR/SDK/tools/bin/7z x $XCODEDMG "*/Packages/MacOSX*.pkg"
+  [ $? -ne 0 -a $? -ne 2 ] && exit 1
+fi
+
+[ -z "$(ls -A)" ] && exit 1
+
+set -e
+
+popd &>/dev/null
+
+XCODEDIR="$TMP/$(ls $TMP | grep "code" | head -n1)" \
+  ./tools/gen_sdk_package.sh