This option enables the compilation of C90 source code. It enforces C only, and C++ syntax is not accepted.
This option can also be combined with other source language
command-line options. For example,
armcc --c90 --gnu.
To ensure conformance with ISO/IEC 9899:1990, the 1990 International
Standard for C and ISO/IEC 9899 AM1, the 1995 Normative Addendum
1, you must also use the
This option is implicitly selected for files having a suffix
If you are migrating from RVCT, be aware that filename extensions
deprecated in ARM Compiler 4.1 and later.