`cccp`-$-C-Dname=definition-dD-dM
-I directory-H-I--imacros file
-include file languages-lint
-M-MD-MM-MMD-nostdinc-P-pedantic
-pedantic-errors-trigraphs-Uname
-undef warnings infile-outfile--lang-c-lang-c++-lang-objc-Wtrigraphs-Wcomment-Wall-Wtraditional