cpp – C language preprocessor|
cpp [ option ... ] [ ifile [ ofile ] ]|
Cpp interprets ANSI C preprocessor directives and does macro substitution.
The input ifile and output ofile default to standard input and
standard output respectively.
–IdirSame as in 8c(1): add dir to the search for directives.
–M Generate no output except a list of include files in a form suitable for specifying dependencies to mk(1). Use twice to list files in angle brackets.
–N Turn off default include directories. All must be specified with –I, or in the environment variable include. Without this option, /$objtype/include and /sys/include are used as the last two searched directories for include directives, where $objtype is read from the environment. –V Print extra debugging information.
–P Do not insert ``#line'' directives into the output.
–+ Understand C++ comments. This is now the default.
–. Inhibit include search in the source's directory.
–i Print the list of directories searched when #include is found. Last listed are searched first.
/sys/include directory for machine–independent include files|
/$objtype/includedirectory for machine–dependent include files