Add AMD64-specific compile script

native/compile-linux-amd64.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+if [ ! -d zlib-ng ]; then
+  echo "Cloning zlib-ng..."
+  git clone https://github.com/zlib-ng/zlib-ng.git
+fi
+
+echo "Compiling zlib-ng..."
+cd zlib-ng
+CFLAGS="-fPIC -O3 -mtune=skylake -flto" AR=gcc-ar RANLIB=gcc-ranlib ./configure --zlib-compat --static
+make clean && make
+cd ..
+
+# Modify as you need.
+MBEDTLS_ROOT=mbedtls
+CFLAGS="-O3 -I$JAVA_HOME/include/ -I$JAVA_HOME/include/linux/ -fPIC -shared -mtune=skylake -flto"
+gcc $CFLAGS -Izlib-ng src/main/c/jni_util.c src/main/c/jni_zlib_deflate.c src/main/c/jni_zlib_inflate.c \
+    src/main/c/jni_zlib_common.c zlib-ng/libz.a  -o src/main/resources/linux_x64/velocity-compress.so
+gcc $CFLAGS  -I $MBEDTLS_ROOT/include -shared $MBEDTLS_ROOT/library/aes.c $MBEDTLS_ROOT/library/aesni.c \
+    $MBEDTLS_ROOT/library/platform.c $MBEDTLS_ROOT/library/platform_util.c src/main/c/jni_util.c src/main/c/jni_cipher.c \
+    -o src/main/resources/linux_x64/velocity-cipher.so