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I got the meaning of "gcc -s" through the search engine. It means stripping the symbols when linking. But how can I get this information using "man gcc" or "gcc --help"? It seems to have no relevant information: root@desktop:~# 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> on to the assembler -Wp,<options> Pass comma-separated <options> on to the preprocessor -Wl,<options> Pass comma-separated <options

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