fix: use lld and latest clang

Dockerfile.openj9

@@ -5,10 +5,10 @@ FROM ubuntu:25.04 AS build
 RUN apt -qq update \
   && apt -qq upgrade -y \
   && apt -qq install -y --no-install-recommends \
-    ant ant-contrib autoconf build-essential ca-certificates clang-19 cmake cpio curl execstack file git \
+    ant ant-contrib autoconf build-essential ca-certificates clang cmake cpio curl execstack file git \
     libasound2-dev libcups2-dev libdwarf-dev libelf-dev libexpat1-dev libffi-dev libfontconfig libfontconfig1-dev \
     libfreetype6-dev libnuma-dev libssl-dev libx11-dev libxext-dev libxrandr-dev libxrender-dev libxt-dev libxtst-dev \
-    make nasm pkg-config python3 python3-dev rsync systemtap-sdt-dev unzip wget xvfb zip zlib1g-dev unzip \
+    lld make nasm pkg-config python3 python3-dev rsync systemtap-sdt-dev unzip wget xvfb zip zlib1g-dev unzip \
   && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /build
@@ -27,14 +27,16 @@ RUN git clone --single-branch --depth 1 \
 WORKDIR /build/src
 RUN bash get_source.sh
 
-ENV CC=/usr/bin/clang-19 CXX=/usr/bin/clang++-19 \
-  CFLAGS="-O3 -flto -fwhole-program-vtables" \
-  LDFLAGS="-Wl,-O1"
+ENV CC=/usr/bin/clang CXX=/usr/bin/clang++ LD=/usr/bin/lld
+  # TODO: add as args to configure
+  # CFLAGS="-O3 -flto -fwhole-program-vtables" \
+  # LDFLAGS="-Wl,-O1"
 RUN bash configure \
   --with-boot-jdk=/build/bootjdk \
   --with-openssl=system \
   --with-toolchain-type=clang \
-  --enable-jvm-feature-link-time-opt
+  --enable-jvm-feature-link-time-opt \
+  --with-extra-ldflags="-fuse-ld=/usr/bin/lld"
 RUN make all JOBS=$(nproc)
 
 # jlink by advice from https://adoptium.net/blog/2021/10/jlink-to-produce-own-runtime/