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#!/bin/sh
set -e
__goos__deb_arch_os() {
case "$1" in
kfreebsd) echo freebsd ;;
linux) echo "$1" ;;
*) echo >&2 "error: unrecongized DEB_*_ARCH_OS: $1"; exit 1 ;;
esac
}
__goarch__deb_arch_cpu() {
case "$1" in
amd64|arm|arm64|mips|ppc64|riscv64|s390x) echo "$1" ;;
i386) echo 386 ;;
mips64el) echo mips64le ;;
mipsel) echo mipsle ;;
ppc64el) echo ppc64le ;;
*) echo >&2 "error: unrecongized DEB_*_ARCH_CPU: $1"; exit 1 ;;
esac
}
# build machine
# The machine the package is built on.
#
# host machine
# The machine the package is built for.
export GOHOSTOS="$(__goos__deb_arch_os "$(dpkg-architecture -qDEB_BUILD_ARCH_OS 2>/dev/null)")"
export GOOS="$(__goos__deb_arch_os "$(dpkg-architecture -qDEB_HOST_ARCH_OS 2>/dev/null)")"
export GOHOSTARCH="$(__goarch__deb_arch_cpu "$(dpkg-architecture -qDEB_BUILD_ARCH_CPU 2>/dev/null)")"
export GOARCH="$(__goarch__deb_arch_cpu "$(dpkg-architecture -qDEB_HOST_ARCH_CPU 2>/dev/null)")"
if [ -z "$GOHOSTOS" -o -z "$GOOS" -o -z "$GOHOSTARCH" -o -z "$GOARCH" ]; then
exit 1
fi
[ -e "$GOROOT_BOOTSTRAP/bin/go" ] || exit 1
GOVERSION_BOOTSTRAP=$("$GOROOT_BOOTSTRAP/bin/go" version|sed -E -n 's|.*go([0-9]\.[0-9]+).*|\1|p')
export GOVERSION_BOOTSTRAP
# Always not use sse2. This is important to ensure that the binaries we build
# (both when compiling golang on the buildds and when users cross-compile for
# 386) can actually run on older CPUs (where old means e.g. an AMD Athlon XP
# 2400+). See http://bugs.debian.org/753160 and
# https://code.google.com/p/go/issues/detail?id=8152
# Staring from go1.16, GO386=387 is not supported, only GO386=softfloat.
unset GO386
if dpkg --compare-versions "$GOVERSION_BOOTSTRAP" ge "1.16"; then
# Only go1.16 recognizes GO386=softfloat. Using GO386=387 to build go1.16
# also fails.
# https://github.com/golang/go/issues/44500
# Need to build with GO386="" first, then rebuild go1.16+ with go1.16 and
# GO386=softfloat
export GO386=softfloat
fi
unset GOARM
if [ "$GOARCH" = 'arm' ]; then
# start with GOARM=5 for maximum compatibility (see note about GO386 above)
GOARM=5
case "$(dpkg-architecture -qDEB_HOST_ARCH 2>/dev/null)" in
armhf) GOARM=6 ;;
esac
fi
export GOARM
eval "$@"
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