Import QEMU upstream snapshot d2e570c

Upstream: https://gitlab.com/qemu-project/qemu.git

Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475

tests/docker/dockerfiles/debian-toolchain.docker

@@ -0,0 +1,50 @@
+#
+# Docker toolchain cross-compiler
+#
+# This dockerfile is used for building a cross-compiler toolchain.
+# The script for building the toolchain is supplied via extra-files.
+#
+FROM docker.io/library/debian:13-slim
+
+# Install build utilities for building gcc and glibc.
+# ??? The build-dep isn't working, missing a number of
+# minimal build dependiencies, e.g. libmpc.
+
+# Add deb-src repository sources
+RUN sed -i "s/^Types: deb$/Types: deb deb-src/" \
+    /etc/apt/sources.list.d/debian.sources
+
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt install -y --no-install-recommends \
+        bison \
+        ca-certificates \
+        flex \
+        gawk \
+        libmpc-dev \
+        libmpfr-dev \
+        rsync \
+        wget && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt build-dep -yy --arch-only gcc glibc
+
+ADD build-toolchain.sh /root/build-toolchain.sh
+
+RUN cd /root && ./build-toolchain.sh
+
+# Throw away the extra toolchain build deps, the downloaded source,
+# and the build trees by restoring the original image,
+# then copying the built toolchain from stage 0.
+FROM docker.io/library/debian:13-slim
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt install -y --no-install-recommends \
+        libmpc3
+COPY --from=0 /usr/local /usr/local
+# As a final step configure the user (if env is defined)
+ARG USER
+ARG UID
+RUN if [ "${USER}" ]; then \
+  id ${USER} 2>/dev/null || useradd -u ${UID} -U ${USER}; fi