feat: support building GraalVM with zig instead of llvm

[izaakschroeder]

Summary

• Turn off requiring glibc.
• Use zig instead of gcc-musl/llvm for GraalVM itself. This also requires a corresponding mx patch: feat: add zig toolchain graalvm/mx#306
• Ship zig with GraalVM to be used when building native images instead of gcc. Also ship zlib source to be able to compile statically without installing any other dependencies.

Related Issues

• Link the relevant issue, design discussion, or other prior context if applicable.

Testing

ARG ALPINE_VERSION=3.23.4
# =====================================================================
# JDK
# https://github.com/graalvm/labs-openjdk
# =====================================================================
FROM alpine:${ALPINE_VERSION} AS jdk

RUN apk update
RUN apk add curl

ARG JDK_VERSION=jvmci-25.1-b18
ARG JDK_PKG=https://github.com/graalvm/labs-openjdk/archive/refs/tags/${JDK_VERSION}.tar.gz

ENV LANG=en_US.UTF-8

RUN mkdir /src
RUN set -eux \
    && curl --fail --silent --location --retry 3 ${JDK_PKG} \
    | tar -xzf- -C /src \
    && mv /src/labs-openjdk-* /src/jdk

RUN apk add bash gcc alpine-sdk autoconf file make zip\
    alsa-lib-dev cups-dev fontconfig-dev \
    libxtst-dev libxt-dev libxrender-dev libxrandr-dev \
    zlib-dev libffi-dev elfutils-dev libjpeg-turbo-dev

# JDK25 can compile JDK25 and JDK26
RUN apk add openjdk25-jdk

ENV PREFIX=/usr/lib/java
RUN cd /src/jdk \
    && bash configure \
    --prefix=${PREFIX} \
    --sysconfdir=/etc \
    --mandir=/usr/share/man \
    --infodir=/usr/share/info \
    --localstatedir=/var \
    --with-extra-cflags="-D_LARGEFILE64_SOURCE" \
    --with-extra-cxxflags="-D_LARGEFILE64_SOURCE" \
    --with-native-debug-symbols=none \
    --disable-warnings-as-errors \
    --disable-precompiled-headers \
    --enable-dtrace=no \
    --with-jvm-variants=server \
    --with-debug-level=release \
    --with-jmod-compress=zip-1 \
    && make product-bundles static-libs-bundles

RUN mkdir -p /dist${PREFIX}
RUN tar -xzf /src/jdk/build/linux-*/bundles/jdk-*-internal_linux-*-musl_bin.tar.gz --strip-components=1 -C /dist${PREFIX}
RUN tar -xzf /src/jdk/build/linux-*/bundles/jdk-*-internal_linux-*-musl_bin-static-libs.tar.gz --strip-components=1 -C /dist${PREFIX}

# =====================================================================
# Ninja
# https://github.com/ninja-build/ninja
#
# Used to build GraalVM
# =====================================================================
FROM alpine:${ALPINE_VERSION} AS ninja

RUN apk add bash gcc g++ make zip curl python3

RUN mkdir -p /src/ninja
RUN curl --fail --silent --location --retry 3 https://github.com/ninja-build/ninja/archive/refs/tags/v1.10.2.tar.gz | tar --strip-components=1 -xzf- -C /src/ninja
RUN cd /src/ninja && ./configure.py --bootstrap
RUN mkdir -p /dist/usr/bin && mv /src/ninja/ninja /dist/usr/bin/ninja

# =====================================================================
# GraalVM
# https://github.com/graalvm/mx
# https://github.com/oracle/graal
#
# Used to build native binaries. The version of this is linked closely
# to the JVM version and both must often be updated in tandem.
#
# =====================================================================
FROM alpine:${ALPINE_VERSION} AS graalvm

COPY --from=jdk /dist /
COPY --from=ninja /dist /

# Note that zlib-static and zlib-dev are _NOT_ added here because they
# are now compiled on-demand.
RUN apk add \
    bash gcc patch linux-headers make git zip \
    musl-dev curl python3

RUN mkdir -p /src/mx
RUN mkdir -p /src/graal

RUN curl --fail --silent --location --retry 3 https://github.com/izaakschroeder/mx/archive/refs/heads/zig.tar.gz \
    | tar --strip-components=1 -xzf- -C /src/mx
RUN curl --fail --silent --location --retry 3 https://github.com/oracle/graal/archive/refs/heads/master.tar.gz \
    | tar --strip-components=1 -xzf- -C /src/graal

ENV JAVA_HOME=/usr/lib/java
ENV LANG=en_US.UTF-8

# See: https://github.com/oracle/graal/blob/e4bd1eae508dec3e2020797714e92c7c8fd46b86/.github/actions/build-graalvm/action.yml#L51
ENV MX_NATIVE_IMAGES="native-image"
ENV MX_COMPONENTS="Native Image"

RUN cd /src/graal/substratevm && /src/mx/mx --native-images="${MX_NATIVE_IMAGES}" --components="${MX_COMPONENTS}" --extra-image-builder-argument='--libc=musl' --extra-image-builder-argument='--static' build

RUN mkdir -p /dist/usr/lib/graalvm
RUN GRAALVM_HOME=$(cd /src/graal/substratevm && /src/mx/mx --native-images="${MX_NATIVE_IMAGES}" --components="${MX_COMPONENTS}" graalvm-home) && mv "${GRAALVM_HOME}"/* /dist/usr/lib/graalvm

Documentation

TBD

• Describe any documentation updates included in this pull request.
• If no documentation updates are needed, state that explicitly.

Contributor Checklist

TBD

• I have read the contribution guide.
• I have the right to contribute the submitted material under the project terms.
• I have updated tests and documentation where appropriate.
• If I used a coding assistant, I remain responsible for the entire contribution and have reviewed it accordingly.

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• PR author: izaak.schroeder@gmail.com (@izaakschroeder)

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