m4/inttypes_h.m4

   1 #serial 3
   2
   3 dnl From Paul Eggert.
   4
   5 # Define HAVE_INTTYPES_H if <inttypes.h> exists,
   6 # doesn't clash with <sys/types.h>, and declares uintmax_t.
   7
   8 AC_DEFUN(jm_AC_HEADER_INTTYPES_H,
   9 [
  10   AC_CACHE_CHECK([for inttypes.h], jm_ac_cv_header_inttypes_h,
  11   [AC_TRY_COMPILE(
  12     [#include <sys/types.h>
  13 #include <inttypes.h>],
  14     [uintmax_t i = (uintmax_t) -1;],
  15     jm_ac_cv_header_inttypes_h=yes,
  16     jm_ac_cv_header_inttypes_h=no)])
  17   if test $jm_ac_cv_header_inttypes_h = yes; then
  18     AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H, 1,
  19 [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
  20    and declares uintmax_t. ])
  21   fi
  22 ])