Fall 2024 recompile of the natives (#1416)

This time around, instead of the very ad hoc approach I have historically taken, this time we actually have a convenient script that takes care of basically all the hard work necessary, including cross-compilation.

We compile natives for Ubuntu 20.04 LTS (OpenSSL 1.1.x native and libdeflate) and Ubuntu 22.04 LTS (OpenSSL 3.x.x native), for both x86_64 and aarch64.

The macOS natives have also been recompiled on macOS Sonoma.

native/build-support/compile-linux-compress.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+if [ ! "$CC" ]; then
+  # The libdeflate authors recommend that we build using GCC as it produces "slightly faster binaries":
+  # https://github.com/ebiggers/libdeflate#for-unix
+  export CC=gcc
+fi
+
+if [ ! -d libdeflate ]; then
+  echo "Cloning libdeflate..."
+  git clone --branch v1.21 --single-branch https://github.com/ebiggers/libdeflate.git
+fi
+
+echo "Compiling libdeflate..."
+cd libdeflate || exit
+rm -rf build && cmake -DCMAKE_POSITION_INDEPENDENT_CODE=ON -B build && cmake --build build --target libdeflate_static
+cd ..
+
+CFLAGS="-O2 -I$JAVA_HOME/include/ -I$JAVA_HOME/include/linux/ -fPIC -shared -Wl,-z,noexecstack -Wall -Werror -fomit-frame-pointer"
+ARCH=$(uname -m)
+mkdir -p src/main/resources/linux_$ARCH
+$CC $CFLAGS -Ilibdeflate src/main/c/jni_util.c src/main/c/jni_zlib_deflate.c src/main/c/jni_zlib_inflate.c \
+    libdeflate/build/libdeflate.a -o src/main/resources/linux_$ARCH/velocity-compress.so