checking for getxattr in -lattr... no
checking for acl_get_file in -lacl... no
checking for acl in -lsec... no
checking for Solaris ACL... no
checking for POSIX ACL... no
./configure: line 37651: test: =: unary operator expected
./configure: line 37661: test: =: unary operator expected


Looks like the bug is in configure.in, arising from:

AM_CONDITIONAL(HAVE_POSIX_ACL, test $have_posix_acl_support = yes)
AM_CONDITIONAL(HAVE_SOLARIS_ACL, test $have_solaris_acl_support = yes)

If a type of ACL support is not available, its $have_*_acl_support is blank, not "no", so the test command becomes 'test  = yes'. Should do something like:

AM_CONDITIONAL(HAVE_POSIX_ACL, test x$"have_posix_acl_support" = x"yes")
AM_CONDITIONAL(HAVE_SOLARIS_ACL, test x"$have_solaris_acl_support" = x"yes")

or else pre-initialize those $have_* to "no" before (perhaps) setting them to "yes" if the feature is present.