Download & build xar and lzfse

comp.sh

#!/bin/sh
echo "Downloading, patching and building xar"
git clone https://github.com/mackyle/xar.git
cd xar/xar
sed -i 's/OpenSSL_add_all_ciphers/OPENSSL_init_crypto/g' configure.ac
wget https://gist.github.com/BlueSlimee/262287afde01bd787c4b67cbedb2dfdf/raw/366811e3abcc929f04621b1f8db76234653cd8e9/ext2.patch
git apply --ignore-whitespace ext2.patch
bash autogen.sh
make
cd ../..
XAR=./xar/xar/src/xar

echo "Downloading and building LZFSE"
git clone https://github.com/lzfse/lzfse.git
cd lzfse
make
cd ..
LZFSE=./lzfse/build/bin/lzfse
echo "done, bye"

ext2.patch

--- ./lib/ext2.c
+++ ./lib/ext2.c
@@ -140,8 +140,10 @@
    if(! (flags & ~EXT2_NOCOMPR_FL) )
        x_addprop(f, "NoCompBlock");
 #endif
+#ifdef EXT2_ECOMPR_FL
    if(! (flags & ~EXT2_ECOMPR_FL) )
        x_addprop(f, "CompError");
+#endif
    if(! (flags & ~EXT2_BTREE_FL) )
        x_addprop(f, "BTree");
    if(! (flags & ~EXT2_INDEX_FL) )
@@ -229,8 +231,10 @@
    if( e2prop_get(f, "NoCompBlock", (char **)&tmp) == 0 )
        flags |= EXT2_NOCOMPR_FL ;
 #endif
+#ifdef EXT2_ECOMPR_FL
    if( e2prop_get(f, "CompError", (char **)&tmp) == 0 )
        flags |= EXT2_ECOMPR_FL ;
+#endif
    if( e2prop_get(f, "BTree", (char **)&tmp) == 0 )
        flags |= EXT2_BTREE_FL ;
    if( e2prop_get(f, "HashIndexed", (char **)&tmp) == 0 )