-dnl FIXME: this should use AS_IF instead:
-dnl AS_IF([test $ac_fsusage_space = found], [$1], [$2])
-if test $ac_fsusage_space = yes; then
-$1
-else
-$2
-fi
+AS_IF([test $ac_fsusage_space = yes], [$1], [$2])
+
+])
+
+
+# Check for SunOS statfs brokenness wrt partitions 2GB and larger.
+# If <sys/vfs.h> exists and struct statfs has a member named f_spare,
+# enable the work-around code in fsusage.c.
+AC_DEFUN([gl_STATFS_TRUNCATES],
+[
+ AC_MSG_CHECKING([for statfs that truncates block counts])
+ AC_CACHE_VAL(fu_cv_sys_truncating_statfs,
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if !defined(sun) && !defined(__sun)
+choke -- this is a workaround for a Sun-specific problem
+#endif
+#include <sys/types.h>
+#include <sys/vfs.h>]],
+ [[struct statfs t; long c = *(t.f_spare);]])],
+ [fu_cv_sys_truncating_statfs=yes],
+ [fu_cv_sys_truncating_statfs=no])])
+ if test $fu_cv_sys_truncating_statfs = yes; then
+ AC_DEFINE(STATFS_TRUNCATES_BLOCK_COUNTS, 1,
+ [Define if the block counts reported by statfs may be truncated to 2GB
+ and the correct values may be stored in the f_spare array.
+ (SunOS 4.1.2, 4.1.3, and 4.1.3_U1 are reported to have this problem.
+ SunOS 4.1.1 seems not to be affected.)])
+ fi
+ AC_MSG_RESULT($fu_cv_sys_truncating_statfs)
+])