AC_STDC_HEADERS
AC_HAVE_HEADERS(stdlib.h stdio.h string.h stddef.h math.h unistd.h)
AC_CHECK_HEADERS(time.h sys/params.h sys/time.h sys/times.h sys/resource.h)
-AC_CHECK_HEADERS(sys/mman.h)
+AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h)
AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])])
+AC_CHECK_MEMBERS([struct stat.st_blksize])
+AC_CHECK_MEMBERS([struct stat.st_blocks])
+AC_CHECK_MEMBERS([struct stat.st_rdev])
+
# Check for complex math functions
AC_CHECK_LIB([m],[csin],[need_math="no"],[need_math="yes"])