diff -urN archiso/archiso/mkarchiso archiso-hayao/archiso/mkarchiso
--- archiso/archiso/mkarchiso	2020-02-11 23:20:42.357249852 +0900
+++ archiso-2/archiso/mkarchiso	2020-02-11 23:19:55.567249858 +0900
@@ -18,6 +18,7 @@
 out_dir="out"
 sfs_mode="sfs"
 sfs_comp="xz"
+sfs_comp_opt=""
 gpg_key=
 
 # Show an INFO message
@@ -95,6 +96,8 @@
     echo "                     Default: ${sfs_mode}"
     echo "    -c <comp_type>   Set SquashFS compression type (gzip, lzma, lzo, xz, zstd)"
     echo "                     Default: '${sfs_comp}'"
+    echo "    -t <options>     Set compressor-specific options. Run 'mksquashfs -h' for more help."
+    echo "                     Default: empty"
     echo "    -v               Enable verbose output"
     echo "    -h               This message"
     echo " commands:"
@@ -135,6 +138,10 @@
             _msg_info "              Run command:   ${run_cmd}"
             ;;
         prepare)
+            _msg_info "SquashFS compression type:   ${sfs_comp}"
+            if [[ -n "${sfs_comp_opt}" ]]; then
+                _msg_info "Squashfs compression opts:    ${sfs_comp_opt}"
+            fi
             ;;
         pkglist)
             ;;
@@ -223,9 +230,9 @@
     mkdir -p "${work_dir}/iso/${install_dir}/${arch}"
     _msg_info "Creating SquashFS image, this may take some time..."
     if [[ "${quiet}" = "y" ]]; then
-        mksquashfs "${work_dir}/airootfs.img" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" -no-progress &> /dev/null
+        mksquashfs "${work_dir}/airootfs.img" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" ${sfs_comp_opt} -no-progress &> /dev/null
     else
-        mksquashfs "${work_dir}/airootfs.img" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" -no-progress
+        mksquashfs "${work_dir}/airootfs.img" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" ${sfs_comp_opt} -no-progress
     fi
     _msg_info "Done!"
     rm ${work_dir}/airootfs.img
@@ -240,9 +247,9 @@
     mkdir -p "${work_dir}/iso/${install_dir}/${arch}"
     _msg_info "Creating SquashFS image, this may take some time..."
     if [[ "${quiet}" = "y" ]]; then
-        mksquashfs "${work_dir}/airootfs" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" -no-progress &> /dev/null
+        mksquashfs "${work_dir}/airootfs" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" ${sfs_comp_opt} -no-progress &> /dev/null
     else
-        mksquashfs "${work_dir}/airootfs" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" -no-progress
+        mksquashfs "${work_dir}/airootfs" "${work_dir}/iso/${install_dir}/${arch}/airootfs.sfs" -noappend -comp "${sfs_comp}" ${sfs_comp_opt} -no-progress
     fi
     _msg_info "Done!"
 }
@@ -369,7 +376,7 @@
 
 umask 0022
 
-while getopts 'p:r:C:L:P:A:D:w:o:s:c:g:vh' arg; do
+while getopts 'p:r:C:L:P:A:D:w:o:s:c:g:t:vh' arg; do
     case "${arg}" in
         p) pkg_list="${pkg_list} ${OPTARG}" ;;
         r) run_cmd="${OPTARG}" ;;
@@ -382,6 +389,7 @@
         o) out_dir="${OPTARG}" ;;
         s) sfs_mode="${OPTARG}" ;;
         c) sfs_comp="${OPTARG}" ;;
+        t) sfs_comp_opt="${OPTARG}" ;;
         g) gpg_key="${OPTARG}" ;;
         v) quiet="n" ;;
         h|?) _usage 0 ;;
diff -urN archiso/configs/releng/build.sh archiso-hayao/configs/releng/build.sh
--- archiso/configs/releng/build.sh	2020-02-11 23:20:42.357249852 +0900
+++ archiso-hayao/configs/releng/build.sh	2020-02-11 23:15:29.557249890 +0900
@@ -11,7 +11,8 @@
 work_dir=work
 out_dir=out
 gpg_key=
-
+sfs_comp="xz"
+sfs_comp_opt=""
 verbose=""
 script_path=$(readlink -f ${0%/*})
 
@@ -38,6 +39,10 @@
     echo "                        Default: ${work_dir}"
     echo "    -o <out_dir>       Set the output directory"
     echo "                        Default: ${out_dir}"
+    echo "    -c <comp_type>     Set SquashFS compression type (gzip, lzma, lzo, xz, zstd)"
+    echo "                        Default: ${sfs_comp}"
+    echo "    -t <options>       Set compressor-specific options."
+    echo "                        Default: empty"
     echo "    -v                 Enable verbose output"
     echo "    -h                 This help message"
     exit ${1}
@@ -214,7 +219,7 @@
 make_prepare() {
     cp -a -l -f ${work_dir}/x86_64/airootfs ${work_dir}
     mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" pkglist
-    mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" ${gpg_key:+-g ${gpg_key}} prepare
+    mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" ${gpg_key:+-g ${gpg_key}} -c "${sfs_comp}" -t "${sfs_comp_opt}" prepare
     rm -rf ${work_dir}/airootfs
     # rm -rf ${work_dir}/x86_64/airootfs (if low space, this helps)
 }
@@ -229,7 +234,7 @@
     _usage 1
 fi
 
-while getopts 'N:V:L:P:A:D:w:o:g:vh' arg; do
+while getopts 'N:V:L:P:A:D:w:o:g:c:t:vh' arg; do
     case "${arg}" in
         N) iso_name="${OPTARG}" ;;
         V) iso_version="${OPTARG}" ;;
@@ -240,6 +245,15 @@
         w) work_dir="${OPTARG}" ;;
         o) out_dir="${OPTARG}" ;;
         g) gpg_key="${OPTARG}" ;;
+        c)
+            if [[ ${OPTARG} = "gzip" ||  ${OPTARG} = "lzma" ||  ${OPTARG} = "lzo" ||  ${OPTARG} = "lz4" ||  ${OPTARG} = "xz" ||  ${OPTARG} = "zstd" ]]; then
+                sfs_comp="${OPTARG}"
+            else
+                echo "Invalid compressors ${arg}"
+                _usage 1
+            fi
+            ;;
+        t) sfs_comp_opt=${OPTARG} ;;
         v) verbose="-v" ;;
         h) _usage 0 ;;
         *)