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This section looks at the practical use of gcc, as well as
some of the more esoteric aspects of it's use. We'll first look at the
different commands available with gcc, and will place emphasis
on each of the different stages of compilation (GCC Commands). The
internals of gcc are then covered (GCC Internals), and a
discussion of the inner workings explains what happens when
gcc is invoked. The different languages that are supported by
gcc are also covered, and simple compilations are explained
along with more commonly used options for each language (Integrated Languages).
gcc supports a plethora of command options; the man
and info pages contain a full listing1, and on-line documentation
can be viewed at <http://gcc.gnu.org/onlinedocs>. Here, attention is drawn
to the more useful and commonly used gcc commands, and compilation
of C source files is assumed. Other languages are dealt with in
Integrated Languages. More obtuse commands (for example platform
options, code generation options etc.) are not dealt with here. You can find a
summary of all the commands we'll look at in Reference Section.