feat: add llm-php-ext build support across platforms

- Add Rust toolchain installation via rustup
- Install cargo-php for building PHP extensions
- Clone and build llm-php-ext with static linking
- Enable llm extension in PHP configure for Alpine, Linux, and OSX

Author: donhardman

build-alpine

@@ -31,6 +31,8 @@ install_deps() {
   install_zlib
 
   install_rdkafka
+
+  install_rust
 }
 
 install_dev_deps() {
@@ -39,7 +41,7 @@ install_dev_deps() {
   install_libxml2
 }
 
-export -f install_deps install_dev_deps
+export -f install_deps install_dev_deps install_rust
 . build-bash-base.sh "$@"
 
 if [ "$BUILD_DEV" -eq 1 ]; then
@@ -61,6 +63,7 @@ ENABLE_STATIC=yes
   --with-rdkafka \
 	--enable-jchash \
 	--enable-simdjson \
+	--enable-llm \
   --with-openssl --with-zlib --with-zip \
   --enable-filter \
   --with-curl \

build-bash-base.sh

@@ -14,6 +14,7 @@ SWOOLE_REV="3e1a1f89930ba0bbea1f5ee31bcd0ee701a87aab"
 RDKAFKA_REV="53398031f1cd96e437e9705b67b4dc19d955acb6"
 JCHASH_REV="8ed50cc8c211effe1c214eae1e3240622e0f11b0"
 SIMDJSON_REV="9a2745669fea733a40f9443b1a793846d0759b89"
+LLM_REV="5d31060ec962d4b13b3e429cbfe4aaca38711047"
 SKIP_SYSTEM_DEPS="$2"
 BUILD_DEV="$3"
 BUILD_STATIC=1 # Always build static but dev
@@ -79,6 +80,25 @@ else
 fi
 cd ..
 
+# llm
+git clone https://github.com/manticoresoftware/llm-php-ext.git llm
+cd llm && git checkout "$LLM_REV"
+cd ..
+
+# Build llm extension statically
+cd ext/llm
+if [ "$(uname)" == "Darwin" ]; then
+	# macOS: Use LLVM 17 from Homebrew
+	LIBCLANG_PATH="/opt/homebrew/opt/llvm@17/lib"
+	LLVM_CONFIG_PATH="/opt/homebrew/opt/llvm@17/bin/llvm-config"
+	LLVM_PATH="/opt/homebrew/opt/llvm@17/bin"
+	LIBCLANG_PATH="$LIBCLANG_PATH" LLVM_CONFIG_PATH="$LLVM_CONFIG_PATH" PATH="$LLVM_PATH:$PATH" cargo build --release --features static
+else
+	# Linux
+	cargo build --release --features static
+fi
+cd ../..
+
 cd ..
 
 BUILD_EXTRA=()

build-linux

@@ -18,13 +18,15 @@ set -xe
 install_deps() {
   sudo apt-get update -y
   sudo apt-get install -y curl build-essential autoconf automake bison re2c libzstd-dev pkg-config git libssl-dev zlib1g-dev libzip-dev libonig-dev cmake libcurl4-openssl-dev libzip-dev librdkafka-dev libiconv-hook-dev
+
+  install_rust
 }
 
 install_dev_deps() {
   sudo apt-get install -y libonig-dev libgmp-dev libxml2-dev
 }
 
-export -f install_deps install_dev_deps
+export -f install_deps install_dev_deps install_rust
 . build-bash-base.sh "$@"
 
 
@@ -47,6 +49,7 @@ ENABLE_STATIC=yes
   --with-rdkafka \
 	--enable-jchash \
 	--enable-simdjson \
+	--enable-llm \
   --with-openssl --with-zlib --with-zip --with-iconv \
   --enable-filter \
   --with-curl \

build-osx

@@ -21,13 +21,15 @@ install_deps() {
   export CPPFLAGS="-I${OPENSSL_PREFIX}/include -I${LIBRDKAFKA_PREFIX}/include -I${ICONV_PREFIX}/include"
 
   export PKG_CONFIG_PATH="${OPENSSL_PREFIX}/lib/pkgconfig"
+
+  install_rust
 }
 
 install_dev_deps() {
   brew install libxml2 oniguruma libgmp
 }
 
-export -f install_deps install_dev_deps
+export -f install_deps install_dev_deps install_rust
 . ./build-bash-base.sh "$@"
 
 hide_dynamic_libs() {
@@ -95,6 +97,7 @@ chmod +x configure
   --with-rdkafka \
 	--enable-jchash \
 	--enable-simdjson \
+	--enable-llm \
   --with-openssl --with-zlib --with-zip --with-iconv=$(brew --prefix libiconv) \
   --enable-filter \
   --with-curl \

helper.sh

@@ -1,6 +1,15 @@
 #!/usr/bin/env bash
 set -ex
 
+install_rust() {
+	# Install Rust toolchain
+	curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+	# Source cargo environment
+	. "$HOME/.cargo/env"
+	# Install cargo-php for building PHP extensions
+	cargo install cargo-php --locked
+}
+
 install_curl() {
 	test -d curl-8.0.0 && rm -fr "$_"
 	curl -sSL https://github.com/curl/curl/releases/download/curl-8_0_0/curl-8.0.0.tar.gz | tar -xzf -