Make BUILD fail when compilation fails.

Basically just sets 'e' in the BUILD script.

Makes an assumption that this script will be run from a live git repo,
which should be true for the foreseeable future.

Change-Id: Ic0401eaf066021933d01829de0bcf30095748356
Signed-off-by: Hank Donnay <hdonnay@gmail.com>

BUILD

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -e
 
 #BUILD script
 #
@@ -17,87 +18,52 @@
 #You should have received a copy of the GNU General Public License along
 #with this program; if not, write to the Free Software Foundation, Inc.,
 #51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-#
 
 #Search for config:
-_BUILD_DIR="$(dirname "$0")"
-export _BUILD_DIR=$(cd "$_BUILD_DIR"; pwd)
-. "${_BUILD_DIR}/BUILD.conf"
-export HARVEY="$_BUILD_DIR"
+export HARVEY="$(git rev-parse --show-toplevel)"
+. "${HARVEY}/BUILD.conf"
 
-compile_kernel()
-{
+build_kernel()
+{ (
 	cd "$KRL_DIR"
 	build "$KERNEL_CONF.json"
-	cd "$PATH_ORI" > /dev/null
-}
-
-build_kernel()
-{
-	compile_kernel
-	if [ $? -ne 0 ]
-	then
-		echo "SOMETHING WENT WRONG!"
-	else
-		echo "KERNEL COMPILED OK"
-	fi
-}
-
+) }
 
 build_go_utils()
 { (
-	# this is run in a subshell, so environment modifications are local only
-	set -e
 	export GOBIN="${UTIL_DIR}"
 	export GOPATH="${UTIL_DIR}/third_party:${UTIL_DIR}"
-	go get -d all # should really vendor these bits
+	go get -d harvey/cmd/... # should really vendor these bits
 	go install github.com/rminnich/go9p/ufs harvey/cmd/...
 ) }
 
-check_utils()
-{
-	if [ -f "${UTIL_DIR}"/mksys ]
-	then
-		echo 0
-	else
-		echo 1
-	fi
-}
-
 build_libs()
-{
+{ (
 	rm -rf "$HARVEY/amd64/lib/"*
 	cd "$SRC_DIR"
 	build libs.json
-	cd "$PATH_ORI" > /dev/null
-}
-
+) }
 
 build_klibs()
-{
+{ (
 	cd "$SRC_DIR"
 	build klibs.json
-	cd "$PATH_ORI" > /dev/null
-
-}
+) }
 
 build_cmds()
-{
+{ (
 	rm -rf "$HARVEY/amd64/bin/"*
 	cd "$CMD_DIR"
 	build cmds.json
 	build kcmds.json
-	cd "$PATH_ORI" > /dev/null
-}
+) }
 
 build_regress()
-{
+{ (
 	rm -rf "$HARVEY/amd64/bin/regress"
 	cd "$SRC_DIR"/regress
 	build regress.json
-	cd "$PATH_ORI" > /dev/null
-}
+) }
 
 show_help()
 {

BUILD.conf

@@ -4,13 +4,12 @@
 export ARCH=amd64
 
 ### DIRS ###
-BASEDIR=${_BUILD_DIR}
-INC_DIR=${BASEDIR}/sys/include
-INC_ARCH=${BASEDIR}/${ARCH}/include
-LIB_DIR=${BASEDIR}/${ARCH}/lib
-BIN_DIR=${BASEDIR}/${ARCH}/bin
-SRC_DIR=${BASEDIR}/sys/src
-UTIL_DIR=${_BUILD_DIR}/util
+INC_DIR=${HARVEY}/sys/include
+INC_ARCH=${HARVEY}/${ARCH}/include
+LIB_DIR=${HARVEY}/${ARCH}/lib
+BIN_DIR=${HARVEY}/${ARCH}/bin
+SRC_DIR=${HARVEY}/sys/src
+UTIL_DIR=${HARVEY}/util
 CMD_DIR=${SRC_DIR}/cmd
 KRL_DIR=${SRC_DIR}/9/k10
 TEST_DIR=${SRC_DIR}/test