tests: fbs test: Fix issues around missing git

- update_fbs.py would use git directly, instead of the requested git
  executable
- There are other corner cases for the git executable detection, which
  are now all captured under a more general exception type

Credit to Christopher Friedt for pointing out the original issue.

1 files changed, 5 insertions, 2 deletions

diff --git a/host/utils/update_fbs.py b/host/utils/update_fbs.py
index 86dc2ca83..4f9c595b0 100755
--- a/host/utils/update_fbs.py
+++ b/host/utils/update_fbs.py
@@ -108,9 +108,12 @@ def verify(git_exe, uhd_path=None):
     accompanied by a change of the header. It also detects manual
     changes to the generated header files.
     """
+    if not git_exe:
+        print("Cannot verify schema files (no git found), assuming pass")
+        return True
     try:
-        subprocess.check_output(("git", "status"), stderr=subprocess.STDOUT)
-    except subprocess.CalledProcessError as error:
+        subprocess.check_output((git_exe, "status"), stderr=subprocess.STDOUT)
+    except subprocess.CalledProcessError:
         print("Cannot verify schema files (not a git repo), assuming pass")
         return True
     try: