c89
Calls the C compiler (cc) with the given options , using a C language environment compatible with the -ansiC specification.
This includes proper handling of trigraphs, disabling non-ANSI compiler features (such as asm , inline , typeof , and the $ character in identifiers), and definition of the preprocessor symbol __STRICT_ANSI__ .
cc(1) for a description of all options.
Since c89 is a shell wrapper script to cc , compile errors are prefixed by "cc:".