+echo $ac_n "checking for long long ... $ac_c"
+AC_TRY_RUN([#include <stdio.h>
+main() { long long x = 1000000; x *= x; exit(((x/1000000) == 1000000)? 0: 1); }],
+echo yes;AC_DEFINE(HAVE_LONGLONG),
+echo no)
+
+echo $ac_n "checking for off64_t ... $ac_c"
+AC_TRY_RUN([#include <stdio.h>
+#include <sys/stat.h>
+main() { struct stat64 st; off64_t s; if (sizeof(off_t) == sizeof(off64_t)) return 1; exit((lstat64("/dev/null", &st)==0)?0:1); }],
+echo yes;AC_DEFINE(HAVE_OFF64_T),
+echo no)
+
+echo $ac_n "checking for short ino_t ... $ac_c"
+AC_TRY_RUN([#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+main() { if (sizeof(ino_t) < sizeof(unsigned int)) return 0; return 1; }],
+echo yes;AC_DEFINE(HAVE_SHORT_INO_T),
+echo no)
+
+echo $ac_n "checking for unsigned char ... $ac_c"
+AC_TRY_RUN([#include <stdio.h>
+main() { char c; c=250; exit((c > 0)?0:1); }],
+echo yes;AC_DEFINE(HAVE_UNSIGNED_CHAR),
+echo no)
+
+echo $ac_n "checking for broken readdir ... $ac_c"
+AC_TRY_RUN([#include <sys/types.h>
+#include <dirent.h>
+main() { struct dirent *di; DIR *d = opendir("."); di = readdir(d);
+if (di && di->d_name[-2] == '.' && di->d_name[-1] == 0 &&
+di->d_name[0] == 0) return 0; return 1;} ],
+echo yes - you are using the broken /usr/ucb/cc;AC_DEFINE(HAVE_BROKEN_READDIR),
+echo no)
+