diff --git a/.travis.yml b/.travis.yml
index bdad74d..7b5505b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,24 +19,6 @@ env:
   matrix:
     - BOGUS_JOB=true
 
-addons:
-  apt:
-    packages:
-      - g++-4.7
-      - g++-4.8
-      - g++-4.9
-      - g++-5
-      - g++-6
-      - clang-3.6
-      - clang-3.7
-      - clang-3.8
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-precise
-      - llvm-toolchain-precise-3.6
-      - llvm-toolchain-precise-3.7
-      - llvm-toolchain-precise-3.8
-
 matrix:
 
   exclude:
@@ -48,69 +30,206 @@ matrix:
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - g++-4.7
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.7 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - g++-4.7
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - g++-4.8
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.8 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - g++-4.8
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - g++-4.9
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-4.9 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - g++-4.9
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - g++-5
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - g++-5
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-5 CXXSTD=c++14
+      addons:
+        apt:
+          packages:
+            - g++-5
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++14
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=gcc COMPILER=g++-6 CXXSTD=c++1z
+      addons:
+        apt:
+          packages:
+            - g++-6
+          sources:
+            - ubuntu-toolchain-r-test
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++03
 
+    - os: linux
+      env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++11
+
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - clang-3.6
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.6
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - clang-3.6
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.6
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - clang-3.7
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.7
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.7 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - clang-3.7
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.7
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.8
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.8
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++14
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.8
 
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.8 CXXSTD=c++1z
+      addons:
+        apt:
+          packages:
+            - clang-3.8
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.8
 
     - os: osx
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++03
@@ -140,7 +259,6 @@ install:
   - git submodule init libs/throw_exception
   - git submodule init libs/type_traits
   - git submodule init tools/build
-  - git submodule init tools/inspect
   - git submodule update
   - cp -r $TRAVIS_BUILD_DIR/* libs/smart_ptr
   - ./bootstrap.sh
diff --git a/appveyor.yml b/appveyor.yml
index d35c12d..9b4944a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -30,7 +30,6 @@ install:
   - git submodule init libs/throw_exception
   - git submodule init libs/type_traits
   - git submodule init tools/build
-  - git submodule init tools/inspect
   - git submodule update
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\smart_ptr
   - bootstrap
diff --git a/include/boost/smart_ptr/detail/sp_counted_base.hpp b/include/boost/smart_ptr/detail/sp_counted_base.hpp
index 83ede23..4386137 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base.hpp
@@ -20,7 +20,7 @@
 #include <boost/config.hpp>
 #include <boost/smart_ptr/detail/sp_has_sync.hpp>
 
-#if defined( __clang__ ) && defined( __has_extension )
+#if !defined( __c2__ ) && defined( __clang__ ) && defined( __has_extension )
 # if __has_extension( __c_atomic__ )
 #   define BOOST_SP_HAS_CLANG_C11_ATOMICS
 # endif
diff --git a/include/boost/smart_ptr/detail/sp_has_sync.hpp b/include/boost/smart_ptr/detail/sp_has_sync.hpp
index 16de21d..0c4727c 100644
--- a/include/boost/smart_ptr/detail/sp_has_sync.hpp
+++ b/include/boost/smart_ptr/detail/sp_has_sync.hpp
@@ -22,7 +22,7 @@
 
 #ifndef BOOST_SP_NO_SYNC
 
-#if defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 )
+#if !defined( __c2__ ) && defined( __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 )
 
 # define BOOST_SP_HAS_SYNC
 
@@ -30,7 +30,7 @@
 
 # define BOOST_SP_HAS_SYNC
 
-#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
+#elif !defined( __c2__ ) && defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
 
 #define BOOST_SP_HAS_SYNC