Hi Eric & list, According to the doc (Section 5.9.1 of the GNU Autoconf manual): AC_TYPE_UINT8_T [Macro] If 'stdint.h' or 'inttypes.h' defines the type uint8_t, define HAVE_UINT8_T. Otherwise, define uint8_t to an unsigned integer type that is exactly 8 bits wide, if such a type exists. When I use this macro on an OpenSUSE 10.3 Linux box with GNU C installed, my config.h includes ONLY the following additional text: /* Define for Solaris 2.5.1 so the uint8_t typedef from <sys/synch.h>, <pthread.h>, or <semaphore.h> is not used. If the typedef was allowed, the #define below would cause a syntax error. */ /* #undef _UINT8_T */ /* Define to the type of an unsigned integer type of width exactly 8 bits if such a type exists and the standard includes do not define it. */ /* #undef uint8_t */ Where's the definition of HAVE_UINT8_T? My platform has it, but it's not defined in config.h. Is this an oversight? Thanks! John _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf