diff --git a/.gitignore b/.gitignore
index 080920d1d5..c1564db29d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -307,9 +307,7 @@ cmake_build/
 /boost
 /[Ee]igen
 /build_debug
-/build_gcc_debug
 /build_release
-/build_gcc_release
 /cmake/CPackSourceConfig.cmake
 /cmake/CPackConfig.cmake
 /cmake/arch.c
diff --git a/build.sh b/build.sh
index b9e33990ad..8c4c5fe8b9 100755
--- a/build.sh
+++ b/build.sh
@@ -5,8 +5,8 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 pushd "$SCRIPT_DIR"  >/dev/null
 
 set -e
+set -x
 
-function version_less_than_equal_to() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" = "$1"; }
 debug=false
 
 # Parse command line arguments
@@ -15,19 +15,16 @@ do
 key="$1"
 
 case $key in
-    --gcc)
-    gccBuild=true
-    shift # past argument
-    ;;
-esac
-case $key in
-    --debug)
+--debug)
     debug=true
     shift # past argument
     ;;
 esac
+
 done
 
+function version_less_than_equal_to() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" = "$1"; }
+
 # check for rpclib
 if [ ! -d "./external/rpclib/rpclib-2.2.1" ]; then
     echo "ERROR: new version of AirSim requires newer rpclib."
@@ -47,7 +44,11 @@ else
 fi
 
 # variable for build output
-build_dir=build_debug
+if $debug; then
+    build_dir=build_debug
+else
+    build_dir=build_release
+fi 
 if [ "$(uname)" == "Darwin" ]; then
     export CC=/usr/local/opt/llvm@8/bin/clang
     export CXX=/usr/local/opt/llvm@8/bin/clang++
@@ -117,6 +118,8 @@ Unreal/Environments/Blocks/clean.sh
 mkdir -p Unreal/Environments/Blocks/Plugins
 rsync -a --delete Unreal/Plugins/AirSim Unreal/Environments/Blocks/Plugins
 
+set +x
+
 echo ""
 echo ""
 echo "=================================================================="