Squashed 'cargokit/' changes from 7467b9a..7a5bba8

7a5bba8 fix: setup flutter environment for Xcode iOS builds (Foundation-Devices#30)

git-subtree-dir: cargokit
git-subtree-split: 7a5bba8eefbfe7e567f754477fd172e7a06b153f

build_pod.sh

@@ -37,11 +37,17 @@ export CARGOKIT_TOOL_TEMP_DIR=$TARGET_TEMP_DIR/build_tool
 # Directory inside root project. Not necessarily the top level directory of root project.
 export CARGOKIT_ROOT_PROJECT_DIR=$SRCROOT
 
-FLUTTER_EXPORT_ENVIRONMENT="$PODS_ROOT/../Flutter/ephemeral/flutter_export_environment.sh"
-
-if [[ -f "$FLUTTER_EXPORT_ENVIRONMENT" ]]; then
-  source "$FLUTTER_EXPORT_ENVIRONMENT"
-fi
+FLUTTER_EXPORT_BUILD_ENVIRONMENT=(
+  "$PODS_ROOT/../Flutter/ephemeral/flutter_export_environment.sh" # macOS
+  "$PODS_ROOT/../Flutter/flutter_export_environment.sh" # iOS
+)
+
+for path in "${FLUTTER_EXPORT_BUILD_ENVIRONMENT[@]}"
+do
+  if [[ -f "$path" ]]; then
+    source "$path"
+  fi
+done
 
 "$BASEDIR/run_build_tool.sh" build-pod "$@"