This type of bitness checking won't work on illumos.

--- open-vm-tools-stable-10.3.5/configure.ac	2018-12-01 18:14:18.549366150 +0000
+++ open-vm-tools-stable-10.3.5/configure.ac	2018-12-01 18:38:21.145283499 +0000
@@ -70,18 +70,7 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_HOST
 AC_CANONICAL_BUILD
 
-# Quote the regular expressions
-case "$host_cpu" in
-   [i[3456]86])
-      userSpaceBitness="32"
-      ;;
-   [amd64|x86_64])
-      userSpaceBitness="64"
-      ;;
-   [*])
-      AC_MSG_ERROR([Unknown architecture.])
-      ;;
-esac
+userSpaceBitness="64"
 
 # Operational arguments.
 AC_ARG_WITH([root-privileges],