CLI/c2json: Print 'cpp' error when executed in verbose mode (#12869)

Co-authored-by: Ryan <fauxpark@gmail.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/python/qmk/cli/c2json.py b/lib/python/qmk/cli/c2json.py
index e66b0a1b5..43110a938 100644
--- a/lib/python/qmk/cli/c2json.py
+++ b/lib/python/qmk/cli/c2json.py
@@ -9,6 +9,7 @@ import qmk.keymap
 import qmk.path
 from qmk.json_encoders import InfoJSONEncoder
 from qmk.keyboard import keyboard_completer, keyboard_folder
+from qmk.errors import CppError
 
 
 @cli.argument('--no-cpp', arg_only=True, action='store_false', help='Do not use \'cpp\' on keymap.c')
@@ -37,7 +38,13 @@ def c2json(cli):
         cli.args.output = None
 
     # Parse the keymap.c
-    keymap_json = qmk.keymap.c2json(cli.args.keyboard, cli.args.keymap, cli.args.filename, use_cpp=cli.args.no_cpp)
+    try:
+        keymap_json = qmk.keymap.c2json(cli.args.keyboard, cli.args.keymap, cli.args.filename, use_cpp=cli.args.no_cpp)
+    except CppError as e:
+        if cli.config.general.verbose:
+            cli.log.debug('The C pre-processor ran into a fatal error: %s', e)
+        cli.log.error('Something went wrong. Try to use --no-cpp.\nUse the CLI in verbose mode to find out more.')
+        return False
 
     # Generate the keymap.json
     try: