make it more or less work with 'warning_level=everything'

meson.build

@@ -5,7 +5,7 @@ project(
     default_options : [
         'prefix=/home/drath/.local',
         'c_std=c23',
-        'warning_level=3',   # -> -Wall -Wextra -Wpedantic, also try =everything
+        'warning_level=everything',   # -> -Wall -Wextra -Wpedantic, also try =everything
         'werror=true',       # -> -Werror
         'buildtype=release', # -> -O3, no debug
     ],
@@ -32,6 +32,12 @@ executable(
     c_args : [
         '-D_GNU_SOURCE',
         '-D_POSIX_C_SOURCE=200809L',
+        '-Wno-c++-compat',
+        '-Wno-format-truncation',
+        '-Wno-conversion',
+        '-Wno-arith-conversion',
+        '-Wno-cast-align', # casting char array to gpu_metrics
+        '-Wno-padded'
     ],
     install : true,
 )