From 5c8ddc85f742a766a1df11628937d1b990813807 Mon Sep 17 00:00:00 2001
From: Tonis Tiigi <tonistiigi@gmail.com>
Date: Fri, 22 Mar 2019 18:02:57 -0700
Subject: [PATCH] hack: add cross target

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
---
 .dockerignore |  1 +
 Makefile      |  3 +++
 hack/cross    | 20 ++++++++++++++++++++
 3 files changed, 24 insertions(+)
 create mode 100755 hack/cross

diff --git a/.dockerignore b/.dockerignore
index e660fd93..7d1c8f17 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1 +1,2 @@
 bin/
+cross-out/
diff --git a/Makefile b/Makefile
index 3fd67bec..a7751d3f 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,9 @@ shell:
 binaries:
 	./hack/binaries
 
+binaries-cross:
+	EXPORT_LOCAL=cross-out ./hack/cross
+
 install: binaries
 	mkdir -p ~/.docker/cli-plugins
 	cp bin/buildx ~/.docker/cli-plugins/docker-buildx
diff --git a/hack/cross b/hack/cross
new file mode 100755
index 00000000..d1d9b5d9
--- /dev/null
+++ b/hack/cross
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+. $(dirname $0)/util
+
+: ${TARGETPLATFORM=linux/amd64,linux/arm/v7,linux/arm64,darwin/amd64,windows/amd64,linux/ppc64le,linux/s390x}
+: ${CONTINUOUS_INTEGRATION=}
+: ${EXPORT_LOCAL=}
+
+set -ex
+
+exportFlag=""
+if [ -n "$EXPORT_LOCAL" ]; then
+	exportFlag="--output=type=local,dest=$EXPORT_LOCAL"
+fi
+
+progressFlag=""
+if [ "$CONTINUOUS_INTEGRATION" == "true" ]; then progressFlag="--progress=plain";
+fi
+
+buildctl build $progressFlag --frontend=dockerfile.v0 --local context=. --local dockerfile=. --opt platform=$TARGETPLATFORM $exportFlag --opt target=binaries
\ No newline at end of file