From 0a888bf1a580e6b7b1113dc7db0359484da36078 Mon Sep 17 00:00:00 2001
From: Eric Hameleers <alien@slackware.com>
Date: Sun, 26 Aug 2018 13:28:30 +0200
Subject: Add zstd compression support for squashfs modules

This will provide compression ratios approaching those of xz,
while achieving decompression rations similar to lzo (5 times faster
than xz).

We will need to have a zstd package in Slackware first, and then
rebuild squashfs-tools to add zstd support.
---
 makemod | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'makemod')

diff --git a/makemod b/makemod
index ae030c9..38a5566 100755
--- a/makemod
+++ b/makemod
@@ -62,9 +62,10 @@ fi
 
 MODEXT=$(echo "$2" |rev |cut -d'.' -f1 |rev)
 case $MODEXT in
-  sxz) COMPR="xz" ;;
-  sgz) COMPR="gzip" ;;
-  xzm) COMPR="xz" ;;
+  sxz) COMPR=${COMPR:-"xz"} ;;
+  sgz) COMPR=${COMPR:-"gzip"} ;;
+  szs) COMPR=${COMPR:-"zstd"} ;;
+  xzm) COMPR=${COMPR:-"xz"} ;;  # Porteus module extension and compressor
     *) echo "-- Unsupported module extension '$MODEXT'" ; exit 1 ;;
 esac 
 
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