diff -ur xar-1.5.2.orig/configure.ac xar-1.5.2/configure.ac
--- xar-1.5.2.orig/configure.ac	2007-12-29 20:49:57.000000000 +0200
+++ xar-1.5.2/configure.ac	2008-05-19 17:07:23.000000000 +0300
@@ -181,8 +181,13 @@
 )
 AC_SUBST([enable_autogen])
 
+AC_ARG_ENABLE(acl, AC_HELP_STRING([--disable-acl], [disable support for libacl (default=autodetect)]), [ enable_acl=$enableval ], [ enable_acl=yes ])
+
+if test "x$enable_acl" = "xyes"; then
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <sys/acl.h>], [acl_t a], [AC_DEFINE([HAVE_SYS_ACL_H],[1], [define if you have sys/acl.h and it has a working acl_t type])])
+fi
+
 AC_CHECK_HEADERS(ext2fs/ext2_fs.h sys/statfs.h sys/xattr.h sys/param.h sys/extattr.h libutil.h)
 AC_CHECK_FUNCS(lgetxattr)
 AC_CHECK_FUNCS(lsetxattr)
@@ -251,7 +256,9 @@
 AC_ERROR(can not detect the size of your system's dev_t type)
 fi
 
-AC_CHECK_LIB(acl, acl_get_file)
+if test "x$enable_acl" = "xyes"; then
+  AC_CHECK_LIB(acl, acl_get_file)
+fi
 
 dnl Check for paths
 AC_PREFIX_DEFAULT(/usr/local)
@@ -342,9 +349,14 @@
 dnl 
 dnl Configure libbz2.
 dnl 
-have_libbz2="1"
-AC_CHECK_HEADERS([bzlib.h], , [have_libbz2="0"])
-AC_CHECK_LIB([bz2], [BZ2_bzCompress], , [have_libbz2="0"])
+AC_ARG_ENABLE(bzip2, AC_HELP_STRING([--disable-bzip2], [disable support for libbz2 (default=autodetect)]), [ enable_bzip2=$enableval ], [ enable_bzip2=yes ])
+
+if test "x$enable_bzip2" = "xyes"; then
+  have_libbz2="1"
+  AC_CHECK_HEADERS([bzlib.h], , [have_libbz2="0"])
+  AC_CHECK_LIB([bz2], [BZ2_bzCompress], , [have_libbz2="0"])
+fi
+
 if test "x${have_libbz2}" = "x1" ; then
   AC_DEFINE([HAVE_LIBBZ2])
 fi