Print a message about missing astyle in format-source.

1 files changed, 7 insertions, 1 deletions

diff --git a/other/astyle/format-source b/other/astyle/format-source
index fc81f744..157f0fec 100755
--- a/other/astyle/format-source
+++ b/other/astyle/format-source
@@ -10,10 +10,16 @@ if [ -z "$SOURCE_DIR" ]; then
 fi
 cd "$SOURCE_DIR"
 
-if [ -z "$ASTYLE" ]; then
+if [ -z "$ASTYLE" ] || ! which "$ASTYLE"; then
   ASTYLE=astyle
 fi
 
+if ! which "$ASTYLE"; then
+  # If we couldn't find or install an astyle binary, don't do anything.
+  echo "Could not find an astyle binary; please install astyle."
+  exit 1
+fi
+
 if [ -f ../apidsl/_build/apigen.native ]; then
   APIDSL=../apidsl/_build/apigen.native
 else