Thank you Jonathan for the nice explanations. I think it would be better off adding what you wrote to the gcc documentation. Please consider these: assembler assembler-with-cpp f95 f95-cpp-input So assembler-with-cpp means an assembly file which must be preprocessed? It means that assembler alone won't do preprocessing. But c or c++ alone does preprocessing(they did not define c-with-cpp)!! and another thing is f95-cpp-input, does it mean like assembler-with-cpp? Regards On Tue, Dec 7, 2010 at 6:33 PM, Jonathan Wakely wrote: > On 7 December 2010 10:05, ali hagigat wrote: >> We can specify -x option with gcc. I want to know the meaning of the >> following languages: >> >> c c-header c-cpp-output >> c++ c++-header c++-cpp-output >> assembler assembler-with-cpp >> >> What does 'output' indicate? What is the meaning of 'header'? cpp >> stands for preprocessor? > > Yes, cpp means the preprocessor, and it's not just "output" it's > "cpp-output" i.e. it specifies a file which has already been > preprocessed. > > So c-cpp-output is a preprocessed C file (this is the default language > gcc assumes for a .i file) > > And c++-cpp-output is a preprocessed C++ file (the default for a .ii file) > > c-header means a C header file, which will be turned into a preprocessed header. > > See http://gcc.gnu.org/onlinedocs/gcc/Overall-Options.html for the > file extensions and other languages supported. >
