#!/bin/sh

set -eu

WEAVE_SRC=$GOPATH/src/github.com/weaveworks/weave

if ! [ -e $WEAVE_SRC ] ; then
    cat 2>&1 <<EOF
Nothing at ${WEAVE_SRC}.  Please bind-mount the weave repo with the
docker run -v option, e.g.:

    $ cd weave
	$ docker run -v $(pwd):/go/src/github.com/weaveworks/weave \\
		weaveworks/weave-build
EOF
fi

# If we run make directly, any files created on the bind mount
# will have awkward ownership.  So we switch to a user with the
# same user and group IDs as source directory.  We have to set a
# few things up so that sudo works without complaining later on.
uid=$(stat --format="%u" $WEAVE_SRC)
gid=$(stat --format="%g" $WEAVE_SRC)
echo "weave:x:$uid:$gid::$WEAVE_SRC:/bin/sh" >>/etc/passwd
echo "weave:*:::::::" >>/etc/shadow
echo "weave	ALL=(ALL)	NOPASSWD: ALL" >>/etc/sudoers

su weave -c "PATH=$PATH make -C $WEAVE_SRC BUILD_IN_CONTAINER=false $*"