问题
I'm trying to build a small code that works across multiple platforms and compilers. I use assertions, most of which can be turned off, but when compiling with PGI's pgicpp using -mp for OpenMP support, it automatically uses the --no_exceptions option: everywhere in my code with a "throw" statement generates a fatal compiler error. ("support for exception handling is disabled")
Is there a defined macro I can test to hide the throw statements on PGI? I usually work with gcc, which has GCC_VERSION and the like. I can't find any documentation describing these macros in PGI.
回答1:
Take a look at the Pre-defined C/C++ Compiler Macros project on Sourceforge.
PGI's compiler has a __PGI macro.
Also, take a look at libnuwen's compiler.hh header for a decent way to 'normalize' compiler versioning macros.
回答2:
You could try this to see what macros are predefined by the compiler:
pgcc -dM
Maybe that will reveal a suitable macro you can use.
回答3:
Have you looked at the boost headers? Supposing they support PGI, they will have found a way to detect it. You could use that. I would start to search somewhere in boost/config.
来源：https://stackoverflow.com/questions/1233435/detect-compiler-with-ifdef