1 files changed, 89 insertions, 2 deletions
diff --git a/meson.build b/meson.build
index 2a05f8a6..f674bfa4 100644
--- a/meson.build
+++ b/meson.build
@@ -29,8 +29,95 @@ versioned_name = 'serd' + 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() in ['clang', 'emscripten']
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-cast-align',
+      '-Wno-cast-function-type-strict',
+      '-Wno-cast-qual',
+      '-Wno-declaration-after-statement',
+      '-Wno-double-promotion',
+      '-Wno-format-nonliteral',
+      '-Wno-padded',
+      '-Wno-switch-default',
+      '-Wno-unsafe-buffer-usage',
+    ]
+
+    if host_machine.system() == 'windows'
+      c_suppressions += [
+        '-Wno-deprecated-declarations',
+        '-Wno-nonportable-system-include-path',
+        '-Wno-unused-macros',
+      ]
+    endif
+  endif
+
+  if warning_level in ['everything', '3']
+    c_suppressions += ['-Wno-nullability-extension']
+
+    if host_machine.system() == 'freebsd'
+      c_suppressions += ['-Wno-c11-extensions']
+    endif
+  endif
+
+  if not meson.is_cross_build()
+    c_suppressions += ['-Wno-poison-system-directories']
+  endif
+
+elif cc.get_id() == 'gcc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-cast-align',
+      '-Wno-cast-qual',
+      '-Wno-format-nonliteral',
+      '-Wno-inline',
+      '-Wno-padded',
+      '-Wno-switch-default',
+      '-Wno-unsuffixed-float-constants',
+      '-Wno-unused-const-variable',
+    ]
+
+    if host_machine.system() == 'windows'
+      c_suppressions += ['-Wno-float-conversion']
+    endif
+  endif
+
+elif cc.get_id() == 'msvc'
+  c_suppressions += [
+    '/experimental:external',
+    '/external:W0',
+    '/external:anglebrackets',
+  ]
+
+  if warning_level == 'everything'
+    c_suppressions += [
+      '/wd4061', # enumerator in switch is not explicitly handled
+      '/wd4514', # unreferenced inline function has been removed
+      '/wd4710', # function not inlined
+      '/wd4711', # function selected for automatic inline expansion
+      '/wd4800', # implicit conversion from int to bool
+      '/wd4820', # padding added after construct
+      '/wd5045', # will insert Spectre mitigation for memory load
+    ]
+  endif
+
+  if warning_level in ['everything', '3']
+    c_suppressions += [
+      '/wd4706', # assignment within conditional expression
+    ]
+  endif
+
+  if warning_level in ['everything', '3', '2']
+    c_suppressions += [
+      '/wd4996', # POSIX name for this item is deprecated
+    ]
+  endif
+endif
+
+c_suppressions = cc.get_supported_arguments(c_suppressions)
 
 ################
 # Dependencies #