Created
September 12, 2017 14:34
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use preprocessor to detect C++ RTTI flags
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| /* | |
| * g++ has_rtti.cpp -o has_rtti && ./has_rtti | |
| * g++ -fno-rtti has_rtti.cpp -o has_rtti && ./has_rtti | |
| * clang++ has_rtti.cpp -o has_rtti && ./has_rtti | |
| * clang++ -fno-rtti has_rtti.cpp -o has_rtti && ./has_rtti | |
| * @TODO: add msc++ cli, /GR, /GR- | |
| * | |
| * Copyright 2017, Andrew Domaszek | |
| * All rights reserved. | |
| * Program made available under BSD-new license. | |
| */ | |
| #include <stdio.h> | |
| #if defined(__clang__) | |
| #if __has_feature(cxx_rtti) | |
| #define RTTI_ENABLED | |
| #endif | |
| #elif defined(__GNUG__) | |
| #if defined(__GXX_RTTI) | |
| #define RTTI_ENABLED | |
| #endif | |
| #elif defined(_MSC_VER) | |
| #if defined(_CPPRTTI) | |
| #define RTTI_ENABLED | |
| #endif | |
| #endif | |
| int main() | |
| { | |
| #if defined(RTTI_ENABLED) | |
| printf("rtti enabled and detected\n"); | |
| #else | |
| printf("rtti not detected\n"); | |
| #endif | |
| return 0; | |
| } |
I guess I could, but why is someone compiling C++ with the gcc frontend?
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Probably should be
__GNUC__, not__GNUG__.