Once more install libc++.

.travis.yml

   directories:
     - ${DEPENDENCY_DIR}
 
-services:
-  - docker
-
 
 matrix:
     include:
             - libc++-dev
           sources: *sources
 
-before_install:
-  - docker pull jorj/clang5_qt5
-  - docker  run jorj/clang5_qt5 --name devtest -v .:/mnt /bin/bash -c "${cxx} --version; cmake --version ls /mnt"
 
 install:
   - script/ci_install.sh

script/ci_install.sh

 #    rm -rf *
 #fi
 
+# source: https://github.com/ericniebler/range-v3
+
+TRUNK_VERSION="5.*"
+
+set -e
+
+# The pattern of clang --version is: clang version X.Y.Z (sometimes, see below).
+COMPILER_VERSION_OUTPUT="$($CXX --version)"
+arr=(${COMPILER_VERSION_OUTPUT// / })
+
+COMPILER="${arr[0]}"
+VERSION="${arr[2]}"
+
+case $COMPILER in
+    "clang")
+        # Some Ubuntu clang builds are advertised as "just clang", but the
+        # Version still follows the pattern: 3.6.2-svn240577-1~exp1
+        # echo "Compiler is clang :)"
+        arr2=(${VERSION//-/ })
+        VERSION="${arr2[0]}"
+        ;;
+    "Ubuntu")
+        # Ubuntu renames _some_ (not all) of its clang compilers, the pattern of
+        # clang --version is then:
+        # Ubuntu clang version 3.6.2-svn240577-1~exp1
+        COMPILER="${arr[1]}"
+        VERSION="${arr[3]}"
+        arr2=(${VERSION//-/ })
+        VERSION="${arr2[0]}"
+        ;;
+    *)
+        echo "case did not match: compiler: ${COMPILER}"
+        exit 1
+        ;;
+esac
+
+if [ ${COMPILER} != "clang" ]; then
+    echo "Error: trying to install libc++ for a compiler that is not clang: ${COMPILER}"
+    exit 1
+fi
+
+if [ -z ${VERSION+x} ]; then
+    echo "libc++ version is not set. To set the libc++ version: ./install_libcxx.sh -v X.Y.Z"
+    exit 4
+fi
+
+if [[ ${VERSION} == $TRUNK_VERSION ]]; then
+    echo "Fetching libc++ and libc++abi tip-of-trunk..."
+
+    # Checkout LLVM sources
+    git clone --depth=1 https://github.com/llvm-mirror/llvm.git llvm-source
+    git clone --depth=1 https://github.com/llvm-mirror/libcxx.git llvm-source/projects/libcxx
+    git clone --depth=1 https://github.com/llvm-mirror/libcxxabi.git llvm-source/projects/libcxxabi
+else
+    echo "Fetching libc++/libc++abi version: ${VERSION}..."
+    LLVM_URL="http://releases.llvm.org/${VERSION}/llvm-${VERSION}.src.tar.xz"
+    LIBCXX_URL="http://releases.llvm.org/${VERSION}/libcxx-${VERSION}.src.tar.xz"
+    LIBCXXABI_URL="http://releases.llvm.org/${VERSION}/libcxxabi-${VERSION}.src.tar.xz"
+    curl -O $LLVM_URL
+    curl -O $LIBCXX_URL
+    curl -O $LIBCXXABI_URL
+
+    mkdir llvm-source
+    mkdir llvm-source/projects
+    mkdir llvm-source/projects/libcxx
+    mkdir llvm-source/projects/libcxxabi
+
+    tar -xf llvm-${VERSION}.src.tar.xz -C llvm-source --strip-components=1
+    tar -xf libcxx-${VERSION}.src.tar.xz -C llvm-source/projects/libcxx --strip-components=1
+    tar -xf libcxxabi-${VERSION}.src.tar.xz -C llvm-source/projects/libcxxabi --strip-components=1
+fi
+
+mkdir llvm-build
+cd llvm-build
+
+# - libc++ versions < 4.x do not have the install-cxxabi and install-cxx targets
+# - only ASAN is enabled for clang/libc++ versions < 4.x
+if [[ $VERSION == *"3."* ]]; then
+    cmake -DCMAKE_C_COMPILER=${CC} -DCMAKE_CXX_COMPILER=${CXX} \
+          -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=/usr \
+          ../llvm-source
+    if [[ $SANITIZER == "Address;Undefined" ]]; then
+        ASAN_FLAGS="-fsanitize=address"
+        cmake -DCMAKE_CXX_FLAGS="${ASAN_FLAGS}" -DCMAKE_EXE_LINKER_FLAGS="${ASAN_FLAGS}" ../llvm-source
+    fi
+    make cxx -j2 VERBOSE=0
+    sudo cp -r lib/* /usr/lib/
+    sudo cp -r include/c++ /usr/include/
+else
+    cmake -DCMAKE_C_COMPILER=${CC} -DCMAKE_CXX_COMPILER=${CXX} \
+          -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=/usr \
+          -DLIBCXX_ABI_UNSTABLE=ON \
+          -DLLVM_USE_SANITIZER=${SANITIZER} \
+          ../llvm-source
+    make cxx -j2 VERBOSE=0
+    sudo make install-cxxabi install-cxx
+fi
+
+
+
 
 cd ${BUILD_DIR}