Hi. I'm trying to use header precompilation ( http://gcc.gnu.org/onlinedocs/gcc/Precompiled-Headers.html ) for C++ header files. Ive read the sentence: "To create a precompiled header file, simply compile it as you would any other file, if necessary using the -x option to make the driver treat it as a C or C++ header file." About a hundred times. However, I strongly begin to have the fealing that the "c++-header" language or support for an extension like ".hh" is making it impossible to tell the compiler that we are dealing with a header file AND it's C++. Could you give me a concrete working example of precompiling C++ header files? Greetings, Bram PS I would also like to start a discussion on why the c++-header language isn't present or wether a ".hh" extension should be added. Where would be a good place to do this?