The clang family of compilers is built on the LLVM compiler framework. It is an open source compiler supporting a BSD-like license. See http://clang.llvm.org/docs/ for additional information.The following Clang compilers are supported:

Clang C/C++ Compiler v 3.9

• Compiler acronym: clang_3_9
• Host OS: Linux
• Supported languages: C89, C99, C++98, C++11, C++14
• Supported practices: Full support
• Support level: Standard

Additional Notes 

• Only the x86_64 target has been tested. If the clang 3.9 compiler is built as a multi-target compiler, C++test code analysis may not function as expected on cross-compilation targets.
• The pre-built cpptest runtime is not supported for dynamic analysis (unit testing and application monitoring). The runtime must be built during the execution of the test configuration by setting autoBuildDefault="true" in the test execution flow.

• The xmm intrinsic headers are not supported for dynamic analysis.

• Clang is used to link inside of C++test by default. If errors occur during linking that relate to missing C++ libraries, then change the linker in the Build Settings from clang to clang++.

• The clang_3_9 compiler configuration does not use the default GCC for selecting headers. As a result, problems can occur during compilation of instrumented source code during unit testing and application monitoring.

Clang C/C++ Compiler v 4.0

• Compiler acronym: clang_4_0
• Host OS: Linux
• Supported languages: C89, C99, C++, C++11, C++14, GNU++11, GNU++14
• Supported practices: Full support
• Support level: Standard

Additional Notes

• C++test does not support C++17 features accepted by clang
• Only the x86_64 target has been tested. If the clang 4.0 compiler is built as a multi-target compiler, C++test code analysis may not function as expected on cross-compilation targets.

Clang C/C++ Compiler v 5.0

• Compiler acronym: clang_5_0
• Host OS: Linux
• Supported languages: C89, C++11, C++14
• Supported practices: Full support
• Support level: Standard

Additional Notes

• By default, clang is used to link inside of C++test. If errors occur during linking that relate to missing c++ libraries, then change the linker in the build settings from clang to clang++.
• Only the x86_64 target has been tested. If the clang 5.0 compiler is built as a multi-target compiler, C++test code analysis may not function as expected on cross-compilation targets.
• C++17 is not currently supported.
• The avx512 intrinsic headers are not supported

• This version has been tested with GCC 6 and newer. Pairing this compiler with older versions of GCC is unsupported.

Clang C/C++ Compiler v 6.0

• Compiler acronym: clang_6_0
• Host OS: Linux
• Supported languages: C89, C99, C++98, C++11, C++14, C++17
• Supported practices: Full support
• Support level: Standard

Additional Notes

• The avx2 intrinsic headers are not supported.
• The avx512 intrinsic headers are not supported

• This version has been tested with GCC 6 and newer. Pairing this compiler with older versions of GCC is unsupported.

About Support Levels

• Extended: Support has been validated with extended testing and is approved for use in safety-critical software development.
• Standard: Support has been validated with standard testing and is approved for use in non-safety critical software development.