#!/usr/bin/env bash

set -e

# a helper to provide ".exe" when it's appropriate

binary_extension() {

if [ "$(go env GOOS)" = 'windows' ]; then

echo -n '.exe'

fi

}

BINARY_EXTENSION="$(binary_extension)"

BINARY_FULLNAME="$BINARY_NAME$BINARY_EXTENSION"

source "${MAKEDIR}/.go-autogen"

(

export GOGC=${DOCKER_BUILD_GOGC:-1000}

if [ "$(go env GOOS)/$(go env GOARCH)" != "$(go env GOHOSTOS)/$(go env GOHOSTARCH)" ]; then

# must be cross-compiling!

if [ "$(go env GOOS)/$(go env GOARCH)" = "linux/arm" ]; then

# specify name of the target ARM architecture

case "$(go env GOARM)" in

5)

export CGO_CFLAGS="-march=armv5t"

export CGO_CXXFLAGS="-march=armv5t"

;;

6)

export CGO_CFLAGS="-march=armv6"

export CGO_CXXFLAGS="-march=armv6"

;;

7)

export CGO_CFLAGS="-march=armv7-a"

export CGO_CXXFLAGS="-march=armv7-a"

;;

esac

fi

fi

# -buildmode=pie is not supported on Windows arm64 and Linux mips*, ppc64be

# https://github.com/golang/go/blob/go1.19.4/src/cmd/internal/sys/supported.go#L125-L132

if ! [ "$DOCKER_STATIC" = "1" ]; then

# -buildmode=pie not supported when -race is enabled

if [[ " $BUILDFLAGS " != *" -race "* ]]; then

case "$(go env GOOS)/$(go env GOARCH)" in

windows/arm64 | linux/mips* | linux/ppc64) ;;

*)

BUILDFLAGS+=("-buildmode=pie")

;;

esac

fi

fi

# XXX: Disable netgo on Windows and use Window's system resolver instead.

#

# go1.19 and newer added support for netgo on Windows (https://go.dev/doc/go1.19#net),

# which won't ask Windows for DNS results, and hence may be ignoring

# custom "C:\Windows\System32\drivers\etc\hosts".

# See https://github.com/moby/moby/issues/45251#issuecomment-1561001817

# https://github.com/moby/moby/issues/45251, and

# https://go-review.googlesource.com/c/go/+/467335

if [ "$(go env GOOS)" = "windows" ]; then

BUILDFLAGS=("${BUILDFLAGS[@]/netgo/}")

fi

# only necessary for non-sandboxed invocation where TARGETPLATFORM is empty

PLATFORM_NAME=$TARGETPLATFORM

if [ -z "$PLATFORM_NAME" ]; then

PLATFORM_NAME="$(go env GOOS)/$(go env GOARCH)"

if [ -n "$(go env GOARM)" ]; then

PLATFORM_NAME+="/v$(go env GOARM)"

elif [ -n "$(go env GOAMD64)" ] && [ "$(go env GOAMD64)" != "v1" ]; then

PLATFORM_NAME+="/$(go env GOAMD64)"

fi

fi

if [ -n "${DOCKER_DEBUG}" ]; then

GCFLAGS="all=-N -l"

fi

echo "Building $([ "$DOCKER_STATIC" = "1" ] && echo "static" || echo "dynamic") $DEST/$BINARY_FULLNAME ($PLATFORM_NAME)..."

if [ -n "$DOCKER_DEBUG" ]; then

set -x

fi

./hack/with-go-mod.sh go build -mod=vendor -modfile=vendor.mod -o "$DEST/$BINARY_FULLNAME" "${BUILDFLAGS[@]}" -ldflags "$LDFLAGS $LDFLAGS_STATIC $DOCKER_LDFLAGS" -gcflags="${GCFLAGS}" "$GO_PACKAGE"

)

echo "Created binary: $DEST/$BINARY_FULLNAME"