diff --git a/README.md b/README.md
index 2150d93..19a0acf 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,22 @@ compiler.
 
 ## Xcode integration
 
-You can get Xcode integration for **mulle-clang**. mulle-clang will appear as
+### Xcode 8
+ For *Xcode 7* we can use [`mulle-clang-add-to-xcode.sh`](mulle-clang-add-to-xcode.sh)  to integrate **mulle-clang** with project anyhow this doesn't work for *Xcode 8* since [Xcode 8 uses library validation.](https://github.com/alcatraz/Alcatraz/issues/475)
+
+**Xcode 8 integration for mulle-clang with CMake**
+
+ ```bash
+cd <pathToProjectDir>/MulleObjC
+```
+
+```bash
+mkdir build-xcode.d ; cd build-xcode.d ; cmake -G "Xcode" .. ; open *.xcodeproj
+```
+
+### Xcode 7
+
+You can get *Xcode 7* integration for **mulle-clang**. mulle-clang will appear as
 an available compiler in Xcode in the "Build Settings":
 
 ![Screeny](pix/xcode-integration.png)
diff --git a/mulle-clang-add-to-xcode.sh b/mulle-clang-add-to-xcode.sh
index 4fd7492..4620328 100755
--- a/mulle-clang-add-to-xcode.sh
+++ b/mulle-clang-add-to-xcode.sh
@@ -1,6 +1,7 @@
 #! /bin/sh
 #
 #   Copyright (c) 2015 Nat! - Codeon GmbH
+#   Copyright (c) 2016 3a4oT
 #   All rights reserved.
 #
 #   Redistribution and use in source and binary forms, with or without
@@ -63,6 +64,12 @@ set -e
 XCODE_DEVELOPER_PATH="`"xcode-select" -p`"
 [ -d "${XCODE_DEVELOPER_PATH}" ] || fail "Xcode not installed ?"
 
+XCODE_BUILD_VERSION=$(xcodebuild -version | grep -o '[0-9].[0-9].[0-9]$') # => major.minor.patch
+MAJOR_VERSION=(${XCODE_BUILD_VERSION//./ }[0]) # => split to array and take major value
+if [[ $MAJOR_VERSION > 7 ]]; then
+  fail "Xcode ${XCODE_BUILD_VERSION} uses library validation. It won't load in-process plugins anymore. See https://github.com/alcatraz/Alcatraz/issues/475"
+fi
+
 XCODE_CONTENTS_PATH="`dirname ${XCODE_DEVELOPER_PATH}`"