Includes the source code of the specified file at the beginning of the compilation.
is the name of the file whose source code is to be included.
is unspecified, the compiler faults
Use this option to establish standard macro definitions. The
is searched for in the directories on the
include search list.
It is possible to repeatedly specify this option on the command line. This results in
pre-including the files in the order specified.
file2.h -c source.c