compiler

constexpr compiler_type spy::compiler

inlineconstexpr

Compiler reporting value.

The spy::compiler object can be compared to any other compiler related value to verify if the code being compiled with a specific compiler.

Any compiler related value can be checked for equality or ordering for a given version. The targeted version is then specified using a compiler-dependent literal.

Additionally, any of the compiler related value are convertible to bool. They evaluates to true if they matches the correct compiler currently used.

Supported Value

Name	Compiler
spy::clang	Clang
spy::dpcpp	Intel DPC++/ICPX
spy::emscripten	Emscripten
spy::gcc	G++
spy::intel	Intel ICC
spy::msvc	Microsoft Visual Studio
spy::nvcc	NVIDIA NVCC

Example

#include <iostream>
#include <spy/spy.hpp>
 
int main()
{
  // Comparisons
  if constexpr(spy::compiler == spy::gcc_) std::cout << "This code compiled with g++.\n";
  else if constexpr(spy::compiler == spy::clang_) std::cout << "This code compiled with clang.\n";
  else if constexpr(spy::compiler == spy::dpcpp_) std::cout << "This code compiled with ICPX.\n";
 
  // Direct test
  if constexpr(spy::gcc_) std::cout << "This code compiled with g++.\n";
  else if constexpr(spy::clang_) std::cout << "This code compiled with clang.\n";
  else if constexpr(spy::dpcpp_) std::cout << "This code compiled with ICPX.\n";
 
  // Version checks
  using namespace spy::literal;
  if constexpr(spy::compiler == 16'0_clang) std::cout << "This code compiled with clang 16.\n";
  if constexpr(spy::compiler >= 15'0_clang)
    std::cout << "This code compiled with clang 15 or ulterior.\n";
}