Hi Masahiro, > + #elif defined(__INTEL_COMPILER) > + /* How to get the version of intel compiler? */ > + ICC 0 0 0 According to Intel documentation[1], this should do the trick: ICC __INTEL_COMPILER __INTEL_COMPILER_UPDATE __INTEL_COMPILER_BUILD_DATE I don't have the compiler installed, but I tested this on godbolt[2] and looks fine to me. What do you think? [1] https://software.intel.com/content/www/us/en/develop/documentation/cpp-compiler-developer-guide-and-reference/top/compiler-reference/macros/additional-predefined-macros.html [2] https://godbolt.org/z/E5PE6f I.H.