dendrite/build/docker/crossbuild.sh
2022-10-04 11:07:54 +01:00

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2.1 KiB
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#!/bin/sh
set -e
# In order to cross-compile with the multi-stage Docker builds, we need to
# ensure that the suitable toolchain for cross-compiling is installed. Since
# the images are Alpine-based, we will use musl. Download and install the
# toolchain inside the build container.
USERARCH=`go env GOARCH`
GOARCH="$TARGETARCH"
GOOS="linux"
echo "Target arch: $TARGETARCH"
echo "User arch: $USERARCH"
echo "Link flags: $FLAGS"
if [ "$TARGETARCH" != "$USERARCH" ]; then
if [ "$USERARCH" != "amd64" ]; then
echo "Cross-compiling only supported on amd64"
exit 1
fi
echo "Cross compile"
case $GOARCH in
arm64)
curl -s https://more.musl.cc/x86_64-linux-musl/aarch64-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=aarch64-linux-musl-gcc
;;
amd64)
curl -s https://more.musl.cc/x86_64-linux-musl/x86_64-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=x86_64-linux-musl-gcc
;;
386)
curl -s https://more.musl.cc/x86_64-linux-musl/i686-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=i686-linux-musl-gcc
;;
arm)
curl -s https://more.musl.cc/x86_64-linux-musl/armv7l-linux-musleabihf-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=armv7l-linux-musleabihf-gcc
;;
s390x)
curl -s https://more.musl.cc/x86_64-linux-musl/s390x-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=s390x-linux-musl-gcc
;;
ppc64le)
curl -s https://more.musl.cc/x86_64-linux-musl/powerpc64le-linux-musl-cross.tgz | tar xz --strip-components=1 -C /usr
export CC=powerpc64le-linux-musl-gcc
;;
*)
echo "Unsupported GOARCH=${GOARCH}"
exit 1
;;
esac
else
echo "Native compile"
fi
# Output the go environment just in case it is useful for debugging.
go env
# Build Dendrite and tools, statically linking them.
CGO_ENABLED=1 go build -v -ldflags="-linkmode external -extldflags -static ${FLAGS}" -trimpath -o /out/ ./cmd/...