diff --git a/build_all.sh b/build_all.sh
index afe1bb2..16be00e 100644
--- a/build_all.sh
+++ b/build_all.sh
@@ -20,7 +20,8 @@ for TARGET in "${TARGETS[@]}" ; do
 	if [ -f "Makefile" ];then rm -f Makefile; fi
 	if [ -f "cmake_install.cmake" ];then rm -f cmake_install.cmake; fi
 	if [ -f "CMakeCache.txt" ];then rm -f CMakeCache.txt; fi
-	cmake -DCMAKE_TOOLCHAIN_FILE="armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=${TARGET}  ../..
-	make -j
+	cmake -DCMAKE_TOOLCHAIN_FILE="armgcc.cmake" -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=${TARGET}  ../.. && make -j1
+	RET=$?
+	if [ ! 0 -eq ${RET} ]; then exit ${RET}; fi
 	cd ..
 done