1 files changed, 84 insertions, 2 deletions
diff --git a/meson.build b/meson.build
index 48f4675..51e8f5f 100644
--- a/meson.build
+++ b/meson.build
@@ -28,8 +28,90 @@ versioned_name = 'sratom' + version_suffix
 pkg = import('pkgconfig')
 cc = meson.get_compiler('c')
 
-# Set global warning flags
-subdir('meson/suppressions')
+# Set global warning suppressions
+warning_level = get_option('warning_level')
+c_suppressions = []
+if cc.get_id() == 'clang'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-cast-align',
+      '-Wno-cast-function-type-strict',
+      '-Wno-cast-qual',
+      '-Wno-declaration-after-statement',
+      '-Wno-documentation-unknown-command',
+      '-Wno-double-promotion',
+      '-Wno-float-conversion',
+      '-Wno-implicit-float-conversion',
+      '-Wno-implicit-int-conversion',
+      '-Wno-padded',
+      '-Wno-shorten-64-to-32',
+      '-Wno-sign-conversion',
+      '-Wno-unsafe-buffer-usage',
+    ]
+
+    if host_machine.system() == 'windows'
+      c_suppressions += [
+        '-Wno-deprecated-declarations',
+        '-Wno-format-nonliteral',
+      ]
+    endif
+
+    if not meson.is_cross_build()
+      c_suppressions += ['-Wno-poison-system-directories']
+    endif
+  endif
+
+  if warning_level in ['everything', '3']
+    c_suppressions += ['-Wno-nullability-extension']
+  endif
+
+elif cc.get_id() == 'gcc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-cast-align',
+      '-Wno-cast-qual',
+      '-Wno-conversion',
+      '-Wno-inline',
+      '-Wno-padded',
+      '-Wno-suggest-attribute=pure',
+      '-Wno-unsuffixed-float-constants',
+      '-Wno-unused-const-variable',
+    ]
+
+    if host_machine.system() == 'windows'
+      c_suppressions += ['-Wno-suggest-attribute=format']
+    endif
+  endif
+
+elif cc.get_id() == 'msvc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '/wd4242', # conversion, possible loss of data
+      '/wd4365', # signed/unsigned mismatch
+      '/wd4514', # unreferenced inline function has been removed
+      '/wd4706', # assignment within conditional expression
+      '/wd4710', # function not inlined
+      '/wd4711', # function selected for automatic inline expansion
+      '/wd4820', # padding added after construct
+      '/wd5045', # will insert Spectre mitigation for memory load
+    ]
+  endif
+
+  if warning_level in ['everything', '3', '2']
+    c_suppressions += [
+      '/wd4267', # conversion from size_t, possible loss of data
+      '/wd4996', # function or variable may be unsafe
+    ]
+  endif
+
+  if warning_level in ['everything', '3', '2', '1']
+    c_suppressions += [
+      '/wd4244', # conversion from floating point, possible loss of data
+    ]
+  endif
+endif
+
+c_suppressions = cc.get_supported_arguments(c_suppressions)
 
 ################
 # Dependencies #