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Add windows arm64 crossbuild support (#652)
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‎.github/release-drafter.yml‎

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- `docker.elastic.co/beats-dev/golang-crossbuild:$RESOLVED_VERSION-mips-debian12(-fips)?` - linux/mips64, linux/mips64el
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- `docker.elastic.co/beats-dev/golang-crossbuild:$RESOLVED_VERSION-ppc-debian12(-fips)?` - linux/ppc64, linux/ppc64le
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- `docker.elastic.co/beats-dev/golang-crossbuild:$RESOLVED_VERSION-s390x-debian12(-fips)?` - linux/s390x
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- `docker.elastic.co/beats-dev/golang-crossbuild:$RESOLVED_VERSION-windows-arm64-debian12(-fips)?` - linux/arm64, windows/arm64
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### Changes
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‎go/Makefile.debian12‎

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IMAGES := base main darwin armhf armel mips ppc s390x npcap
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ARM_IMAGES := base-arm darwin-arm64
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ARM_IMAGES := base-arm darwin-arm64 windows-arm64
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DEBIAN_VERSION := 12
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TAG_EXTENSION := -debian12
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‎go/windows-arm64/Dockerfile.tmpl‎

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ARG REPOSITORY
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ARG VERSION
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ARG TAG_EXTENSION=''
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FROM ${REPOSITORY}/golang-crossbuild:${VERSION}-base-arm${TAG_EXTENSION}
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#ARG LLVM_MINGW64_VER=20250826
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ARG LLVM_MINGW64_VER=20250910
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ARG LLVM_MINGW_UBUNTU_REL='22.04'
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ARG LLVM_MINGW64_SRC="https://github.com/mstorsjo/llvm-mingw/releases/download"
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ENV LLVM_MINGW64_VER="${LLVM_MINGW64_VER}"
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ENV LLVM_MINGW64_SRC="$LLVM_MINGW64_SRC"
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{{- if ne .DEBIAN_VERSION "12"}}
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RUN echo "This Docker image will work only with Debian >12" && exit 1
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{{- end }}
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RUN \
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apt-get -o Acquire::Check-Valid-Until=false update \
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&& apt-get install -qq -y --no-install-recommends --allow-unauthenticated \
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cmake \
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patch \
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libssl-dev \
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libxml2-dev \
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lzma-dev \
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uuid-dev \
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make \
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bash \
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wget \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /tmp
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COPY --chmod=0755 scripts/setup-llvm-mingw64.sh /tmp/
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RUN /tmp/setup-llvm-mingw64.sh
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COPY --chmod=0755 scripts/install-llvm-mingw64.sh /tmp/install-llvm-mingw64.sh
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RUN /tmp/install-llvm-mingw64.sh /tmp/llvm-mingw64 && rm -rf /tmp/*
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COPY rootfs /
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# Basic test
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RUN which aarch64-w64-mingw32-gcc
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RUN cd / \
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&& aarch64-w64-mingw32-gcc helloWorld.c -o helloWorld.arm64 \
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&& file helloWorld.arm64 \
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&& file helloWorld.arm64 | grep -c 'PE32+ executable (console) Aarch64, for MS Windows'
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RUN cd / \
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&& aarch64-w64-mingw32uwp-gcc helloWorld.c -o helloWorld.arm64e \
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&& file helloWorld.arm64e \
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&& file helloWorld.arm64e | grep -c 'PE32+ executable (console) Aarch64, for MS Windows'
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ENV CGO_ENABLED 1
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#ENV CC aarch64-w64-mingw32-gcc
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#ENV CXX aarch64-w64-mingw32-g++
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ENV CGO_FLAGS="$CGO_FLAGS -I/usr/generic-w64-mingw32/include"
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ENV CGO_CFLAGS="-fno-addrsig"
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RUN go env
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RUN aarch64-w64-mingw32-gcc --version
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RUN go clean -cache -modcache -i -r
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# Build-time metadata as defined at http://label-schema.org.
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ARG BUILD_DATE
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ARG IMAGE
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ARG VCS_REF
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ARG VCS_URL
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LABEL org.label-schema.build-date=$BUILD_DATE \
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org.label-schema.name=$IMAGE \
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org.label-schema.vcs-ref=$VCS_REF \
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org.label-schema.vcs-url=$VCS_URL \
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org.label-schema.schema-version="1.0"

‎go/windows-arm64/Makefile‎

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include ../Makefile.common
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ifeq ($(DOCKER_MULTIARCH),1)
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DOCKER_CMD := $(SELF_DIR)/../.buildkite/scripts/buildx.sh
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push:
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@echo "Already done by buildx (.buildkite/scripts/buildx.sh)."
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atomic-push:
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@echo "Already done by buildx (.buildkite/scripts/buildx.sh)."
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endif

‎go/windows-arm64/rootfs/compilers.yaml‎

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---
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windows:
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arm64:
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CC: aarch64-w64-mingw32-gcc
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CXX: aarch64-w64-mingw32-g++
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‎go/windows-arm64/rootfs/helloWorld.c‎

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#include <stdio.h>
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int main() {
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printf("Hello, World!");
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return 0;
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}

‎go/windows-arm64/scripts/install-llvm-mingw64.sh‎

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#!/usr/bin/env bash
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#
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# Copied from: https://github.com/x1unix/docker-go-mingw/tree/20dfaff6efe8fe3a4ff588a58ccb31646cd2fd60
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#
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set -e
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set -o pipefail
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trap 'echo "$0: Error on line $LINENO" >&2' ERR
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src="$1"
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if [ -z "$src" ]; then
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echo "Error: missing source dir"
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exit 1
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fi
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base_dir='/usr'
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echo ":: Installing llvm-mingw64..."
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echo "Source dir: $src"
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cd "$src" || exit 1
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find . -mindepth 1 -maxdepth 1 -type d ! -name . | while read -r subdir; do
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dst_dir="$(basename "$subdir")"
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case "$dst_dir" in
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bin)
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perm=755
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;;
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*)
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perm=644
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;;
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esac
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find "$subdir" -type f | while read -r file; do
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dst="$base_dir/${file/.\//}"
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mkdir -p "$(dirname "$dst")"
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install -m $perm "$file" "$dst"
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done
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done
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echo ":: Restoring symlinks..."
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while IFS= read -r line; do
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src=$(echo "$line" | awk '{print $1}')
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src="$base_dir/$src"
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dest=$(echo "$line" | awk '{print $2}')
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dest="$(realpath "$base_dir/$dest")"
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ln -s "$dest" "$src"
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done <symlinks.txt
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echo ":: Cleanup"
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cd ..
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rm -rf "$src"

‎go/windows-arm64/scripts/setup-llvm-mingw64.sh‎

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#!/usr/bin/env bash
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#
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# Copied from: https://github.com/x1unix/docker-go-mingw/tree/20dfaff6efe8fe3a4ff588a58ccb31646cd2fd60
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#
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set -e
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set -o pipefail
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trap 'echo "$0: Error on line $LINENO" >&2' ERR
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if [ -z "$LLVM_MINGW64_SRC" ]; then
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echo "Error: LLVM_MINGW64_SRC is undefined"
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env
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exit 1
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fi
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if [ -z "$LLVM_MINGW_UBUNTU_REL" ]; then
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echo "Error: LLVM_MINGW_UBUNTU_REL is undefined"
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env
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exit 1
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fi
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if [ -z "$LLVM_MINGW64_VER" ]; then
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echo "Error: LLVM_MINGW64_VER is undefined"
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env
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exit 1
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fi
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apt update && apt install xz-utils --yes
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case "$(uname -m)" in
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aarch64 | arm64)
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m_arch="aarch64"
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;;
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x86_64 | amd64)
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m_arch="x86_64"
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;;
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*)
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echo "Error: unsupported architecture $(uname -m)"
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exit 1
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;;
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esac
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pkg_dir="llvm-mingw-$LLVM_MINGW64_VER-ucrt-ubuntu-$LLVM_MINGW_UBUNTU_REL-$m_arch"
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pkg_file="$pkg_dir.tar.xz"
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src_url="$LLVM_MINGW64_SRC/$LLVM_MINGW64_VER/$pkg_file"
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echo ":: Downloading $src_url ..."
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wget "$src_url"
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# wget -q --spider "$src_url"
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if [ ! -f "$pkg_file" ]; then
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echo "Error: can't find downloaded file $pkg_file"
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ls -la
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exit 1
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fi
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echo ":: Extracting file..."
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tar -xf "$pkg_file"
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rm "$pkg_file"
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echo ":: Preparing file list..."
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mv "$pkg_dir" llvm-mingw64
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cd llvm-mingw64
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# Keep llvm-mingw64 only for arm target to avoid conflict with gcc-mingw64
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rm bin/x86_64* bin/i686*
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rm -rf i686-w64-mingw32 x86_64-w64-mingw32
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# Backup symlinks
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find . -type l | while read -r symlink; do
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src="${symlink/.\//}"
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dst="$(dirname "$src")/$(readlink "$symlink")"
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echo "$src $dst" >>symlinks.txt
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rm "$symlink"
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done

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