Runs the preprocessor on source files; does not compile.
Directs the CC driver to run only the preprocessor on C++ source files, and to send the result to stdout (standard output). No compilation is done; no .o files are generated.
This option causes preprocessor-type line number information to be included in the output.
This option is useful for determining the changes made by the preprocessor. For example, the following program, foo.cc, generates the output shown in A.2.13.1 Examples
#if __cplusplus < 199711L int power(int, int); #else template <> int power(int, int); #endif int main () { int x; x=power(2, 10); } . |
example% CC -E foo.cc #4 "foo.cc" template < > int power (int, int); int main () { int x; x = power (2, 10); } |
Output from this option is not supported as input to the C++ compiler when templates are used.
–P