Description:
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Using a native compiler on AIX, several files are not ANSI compliant and won't compile.

ext/pdo/php_pdo_driver.h, trailing commas are not allowed in enums.

ext/hash/php_hash_tiger.h, bitfields must be defined as type int, unsigned int, 
or signed int.   char is not allowed.

ext/date/lib/parse_date.c, uchar already defined conflict. I'm not sure what the correct fix is.  AIX already has uchar defined in sys/types.h:
/usr/include/sys/types.h:typedef        unsigned char   uchar_t;
/usr/include/sys/types.h:typedef        uchar_t         uchar;