[Root@localhost one]# gcc--help
USAGE:GCC [options] File ...
Options:
-pass-exit-codes exit with highest error code from a phase
--help Display This information
--target-help Display Target specific command line options
--help={target|optimizers|warnings|params|[ ^]{joined|separate|undocumented}}[,...]
Display specific types of command line options
(Use '-V--help ' to display command line options of sub-processes)
--version Display Compiler version Information
-dumpspecs Display All of the built in spec strings
-dumpversion Display The version of the compiler
-dumpmachine Display The compiler ' s target processor
-print-search-dirs Display The directories in the compiler ' s search path
-print-libgcc-file-name Display The name of the compiler ' s Companion library
-print-file-name=<lib> Display the full path to library <lib>
-print-prog-name=<prog> Display the full path to compiler component <prog>
-print-multi-directory Display The root directory for versions of LIBGCC
-print-multi-lib Display The mapping between command line options and
Multiple Library Search Directories
-print-multi-os-directory Display the relative path to OS libraries
-print-sysroot Display the Target libraries directory
-print-sysroot-headers-suffix Display the sysroot suffix used to find headers
-wa,<options> Pass comma-separated <options> in to the assembler
-wp,<options> Pass comma-separated <options> in to the preprocessor
-wl,<options> Pass comma-separated <options> in to the linker
-xassembler <arg> Pass <arg> on to the assembler
-xpreprocessor <arg> Pass <arg> on to the preprocessor
-xlinker <arg> Pass <arg> on to the linker
-combine pass multiple source files to compiler at once
-save-temps do not delete intermediate files
-pipe use pipes rather than intermediate files
-time time the execution of each subprocess
-specs=<file> Override Built-in specs with the contents of <file>
-std=<standard> assume that's input sources are for <standard>
--sysroot=<directory> use <directory> as the root directory for headers
and libraries
-B <directory> Add <directory> to the compiler ' s search paths
-B <machine> Run gcc for target <machine>, if installed
-V <version> Run gcc version number <version> if installed
-V Display The programs invoked by the compiler
-### like-v but options quoted and commands not executed
-e preprocess only; Do not compile, assemble or link
-S Compile only; Do not assemble or link
-C Compile and assemble, but do not link
-O <file> place the output into <file>
-X <language> Specify the language of the following input files
Permissible languages Include:c C + + assembler None
' None ' means revert to the default behavior of
Guessing the language based on the file ' s extension
Options starting With-g,-F,-M,-O, W, or--param are automatically
Passed on to the various sub-processes invoked by GCC. In order to pass
The other options in to these processes the-w<letter> options must are used.
For bugs reporting instructions, please:
