#!/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!

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

windows/amd64)

export CC="${CC:-x86_64-w64-mingw32-gcc}"

export CGO_ENABLED=1

;;

linux/arm)

case "${GOARM}" in

5)

export CC="${CC:-arm-linux-gnueabi-gcc}"

export CGO_ENABLED=1

export CGO_CFLAGS="-march=armv5t"

export CGO_CXXFLAGS="-march=armv5t"

;;

6)

export CC="${CC:-arm-linux-gnueabi-gcc}"

export CGO_ENABLED=1

export CGO_CFLAGS="-march=armv6"

export CGO_CXXFLAGS="-march=armv6"

;;

7)

export CC="${CC:-arm-linux-gnueabihf-gcc}"

export CGO_ENABLED=1

export CGO_CFLAGS="-march=armv7-a"

export CGO_CXXFLAGS="-march=armv7-a"

;;

*)

export CC="${CC:-arm-linux-gnueabihf-gcc}"

export CGO_ENABLED=1

;;

esac

;;

linux/arm64)

export CC="${CC:-aarch64-linux-gnu-gcc}"

export CGO_ENABLED=1

;;

linux/amd64)

export CC="${CC:-x86_64-linux-gnu-gcc}"

export CGO_ENABLED=1

;;

linux/ppc64le)

export CC="${CC:-powerpc64le-linux-gnu-gcc}"

export CGO_ENABLED=1

;;

linux/s390x)

export CC="${CC:-s390x-linux-gnu-gcc}"

export CGO_ENABLED=1

;;

esac

fi

# -buildmode=pie is not supported on Windows and Linux on mips, riscv64 and ppc64be.

# https://github.com/golang/go/blob/77aa209b386a184e7f4b44938f2a05a1b5c5a3cf/src/cmd/internal/sys/supported.go#L89-L99

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

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

# TODO remove windows in Go 1.15+: https://github.com/golang/go/commit/95f382139043059a2a0780ba577b53893408f7e4

# TODO remove riscv64 in Go 1.16+: https://github.com/golang/go/commit/8eb846fd37eb7bded8a1cf6932be2c59069863e5

*)

BUILDFLAGS+=("-buildmode=pie")

;;

esac

echo "Building: $DEST/$BINARY_FULLNAME"

echo "GOOS=\"${GOOS}\" GOARCH=\"${GOARCH}\" GOARM=\"${GOARM}\""

go build \

-o "$DEST/$BINARY_FULLNAME" \

"${BUILDFLAGS[@]}" \

-ldflags "

$LDFLAGS

$LDFLAGS_STATIC_DOCKER

$DOCKER_LDFLAGS

" \

${GO_PACKAGE}

)

echo "Created binary: $DEST/$BINARY_FULLNAME"