Set the C++ version to C++11 (#1933)

This reverts commit bfcdc913c4.

.appveyor.yml

@@ -46,8 +46,7 @@ install:
 
 before_build:
   - git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers.git external/spirv-headers
-  - git clone https://github.com/google/googletest.git external/googletest
-  - cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+  - git clone --depth=1 https://github.com/google/googletest.git external/googletest
   - git clone --depth=1 https://github.com/google/effcee.git external/effcee
   - git clone --depth=1 https://github.com/google/re2.git external/re2
   # Set path and environment variables for the current Visual Studio version

CMakeLists.txt

@@ -32,6 +32,7 @@ include(GNUInstallDirs)
 include(cmake/setup_build.cmake)
 
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+set(CMAKE_CXX_STANDARD 11)
 
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
   add_definitions(-DSPIRV_LINUX)

kokoro/android/build.sh

@@ -35,8 +35,7 @@ export TOOLCHAIN_PATH=$PWD/android-cmake/android.toolchain.cmake
 
 cd $SRC
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2
 

kokoro/check-format/build.sh

@@ -31,8 +31,7 @@ export PATH=$PWD/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin:$PATH
 
 cd $SRC
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2
 curl -L http://llvm.org/svn/llvm-project/cfe/trunk/tools/clang-format/clang-format-diff.py -o utils/clang-format-diff.py;

kokoro/ndk-build/build.sh

@@ -34,8 +34,7 @@ export ANDROID_NDK=/opt/android-ndk-r15c
 # Get the dependencies.
 cd $SRC
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2
 

kokoro/scripts/linux/build.sh

@@ -73,8 +73,7 @@ export PATH="$PWD:$PATH"
 
 cd $SRC
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2
 

kokoro/scripts/macos/build.sh

@@ -32,8 +32,7 @@ export PATH="$PWD:$PATH"
 
 cd $SRC
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2
 

kokoro/scripts/windows/build.bat

@@ -26,8 +26,7 @@ set PATH=C:\python27;%PATH%
 
 cd %SRC%
 git clone --depth=1 https://github.com/KhronosGroup/SPIRV-Headers external/spirv-headers
-git clone https://github.com/google/googletest          external/googletest
-cd external && cd googletest && git reset --hard 0fc5466dbb9e623029b1ada539717d10bd45e99e && cd .. && cd ..
+git clone --depth=1 https://github.com/google/googletest          external/googletest
 git clone --depth=1 https://github.com/google/effcee              external/effcee
 git clone --depth=1 https://github.com/google/re2                 external/re2