I have some code that requires the command line option -fno-strict-aliasing to be set when using -O2 optimization or the optimizer will silently cause the code to return unexpected results. Because other people may compile these functions into their code, I would like to be sure that they use the correct command line options when compiling. Is there a way to require that -fno-strict-aliasing be set when compiling through the use of pragmas? I would like an error to be thrown at compile time if it is not set. Something like #pragam require -fno-strict-aliasing would be nice. Thanks for your help, Rob -- View this message in context: http://old.nabble.com/Code-Required-Compiler-Options-tp26144636p26144636.html Sent from the gcc - Help mailing list archive at Nabble.com.