meson: Enable some MSVC warnings for parity with GCC/Clang

This makes it easier to do development with MSVC by making it warn
on common issues that GCC/Clang error out for in our CI configuration.

Continuation from https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/223

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/109>

1 files changed, 13 insertions, 6 deletions

diff --git a/meson.build b/meson.build
index bcde45a..08d7432 100644
--- a/meson.build
+++ b/meson.build
@@ -98,16 +98,23 @@ libm = cc.find_library('m', required : false)
 
 gst_libav_args = ['-DHAVE_CONFIG_H']
 if cc.get_id() == 'msvc'
-  # Ignore several spurious warnings for things gstreamer does very commonly
-  # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
-  # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
-  # NOTE: Only add warnings here if you are sure they're spurious
-  add_project_arguments(
+  msvc_args = [
+      # Ignore several spurious warnings for things gstreamer does very commonly
+      # If a warning is completely useless and spammy, use '/wdXXXX' to suppress it
+      # If a warning is harmless but hard to fix, use '/woXXXX' so it's shown once
+      # NOTE: Only add warnings here if you are sure they're spurious
       '/wd4018', # implicit signed/unsigned conversion
       '/wd4146', # unary minus on unsigned (beware INT_MIN)
       '/wd4244', # lossy type conversion (e.g. double -> int)
       '/wd4305', # truncating type conversion (e.g. double -> float)
-      language : 'c')
+      cc.get_supported_arguments(['/utf-8']), # set the input encoding to utf-8
+
+      # Enable some warnings on MSVC to match GCC/Clang behaviour
+      '/w14062', # enumerator 'identifier' in switch of enum 'enumeration' is not handled
+      '/w14101', # 'identifier' : unreferenced local variable
+      '/w14189', # 'identifier' : local variable is initialized but not referenced
+  ]
+  add_project_arguments(msvc_args, language: ['c', 'cpp'])
 endif
 
 # Symbol visibility