1 files changed, 141 insertions, 5 deletions
diff --git a/meson.build b/meson.build
index bd81079..22be3d3 100644
--- a/meson.build
+++ b/meson.build
@@ -21,9 +21,9 @@ version_suffix = '-@0@'.format(major_version)
 versioned_name = 'suil' + version_suffix
 suil_module_dir = get_option('libdir') / versioned_name
 
-#######################
-# Compilers and Flags #
-#######################
+#############################
+# Compilers and Build Tools #
+#############################
 
 # Load build tools
 pkg = import('pkgconfig')
@@ -36,8 +36,144 @@ if host_machine.system() == 'darwin'
   objcpp = meson.get_compiler('objcpp')
 endif
 
-# Set global warning flags
-subdir('meson/suppressions')
+########################
+# Warning Suppressions #
+########################
+
+warning_level = get_option('warning_level')
+
+# C
+c_suppressions = []
+if cc.get_id() in ['clang', 'emscripten']
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-atomic-implicit-seq-cst',
+      '-Wno-cast-function-type-strict',
+      '-Wno-cast-qual',
+      '-Wno-declaration-after-statement',
+      '-Wno-disabled-macro-expansion',
+      '-Wno-padded',
+      '-Wno-reserved-id-macro',
+      '-Wno-unsafe-buffer-usage',
+      '-Wno-variadic-macros',
+    ]
+
+    if not meson.is_cross_build()
+      c_suppressions += ['-Wno-poison-system-directories']
+    endif
+  endif
+
+  if host_machine.system() == 'windows'
+    c_suppressions += [
+      '-Wno-deprecated-declarations',
+      '-Wno-nonportable-system-include-path',
+    ]
+  endif
+
+elif cc.get_id() == 'gcc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-padded',
+      '-Wno-suggest-attribute=const',
+      '-Wno-suggest-attribute=pure',
+    ]
+  endif
+
+elif cc.get_id() == 'msvc'
+  c_suppressions += [
+    '/experimental:external',
+    '/external:W0',
+    '/external:anglebrackets',
+  ]
+
+  if warning_level == 'everything'
+    c_suppressions += [
+      '/wd4191', # unsafe function conversion
+      '/wd4514', # unreferenced inline function has been removed
+      '/wd4710', # function not inlined
+      '/wd4820', # padding added after construct
+      '/wd5045', # will insert Spectre mitigation for memory load
+    ]
+  endif
+
+  if warning_level in ['everything', '3', '2']
+    c_suppressions += [
+      '/wd4996', # function or variable may be unsafe
+    ]
+  endif
+endif
+
+c_suppressions = cc.get_supported_arguments(c_suppressions)
+
+# C++
+if is_variable('cpp')
+  cpp_suppressions = []
+
+  if cpp.get_id() in ['clang', 'emscripten']
+    if warning_level == 'everything'
+      cpp_suppressions += [
+        '-Wno-atomic-implicit-seq-cst',
+        '-Wno-c++98-compat',
+        '-Wno-c++98-compat-pedantic',
+        '-Wno-cast-function-type-strict',
+        '-Wno-cast-qual',
+        '-Wno-disabled-macro-expansion',
+        '-Wno-old-style-cast',
+        '-Wno-padded',
+        '-Wno-reserved-id-macro',
+        '-Wno-unsafe-buffer-usage',
+        '-Wno-variadic-macros',
+        '-Wno-zero-as-null-pointer-constant',
+      ]
+    endif
+  elif cpp.get_id() == 'gcc'
+    if warning_level == 'everything'
+      cpp_suppressions += [
+        '-Wno-arith-conversion',
+        '-Wno-cast-qual',
+        '-Wno-padded',
+        '-Wno-suggest-attribute=const',
+        '-Wno-suggest-attribute=pure',
+        '-Wno-useless-cast',
+        '-Wno-volatile',
+      ]
+    endif
+  endif
+
+  cpp_suppressions = cpp.get_supported_arguments(cpp_suppressions)
+endif
+
+# Objective C++
+if is_variable('objcpp')
+  objcpp_suppressions = []
+
+  if objcpp.get_id() in ['clang', 'emscripten']
+    if warning_level == 'everything'
+      objcpp_suppressions += [
+        '-Wno-c++98-compat-pedantic',
+        '-Wno-deprecated-declarations',
+        '-Wno-old-style-cast',
+        '-Wno-padded',
+        '-Wno-reserved-id-macro',
+        '-Wno-weak-vtables',
+        '-Wno-zero-as-null-pointer-constant',
+      ]
+
+      if not meson.is_cross_build()
+        objcpp_suppressions += ['-Wno-poison-system-directories']
+      endif
+    endif
+
+  elif objcpp.get_id() == 'gcc'
+    if warning_level == 'everything'
+      objcpp_suppressions = (
+        gcc_common_warnings + ['-Wno-direct-ivar-access']
+      )
+    endif
+  endif
+
+  objcpp_suppressions = objcpp.get_supported_arguments(objcpp_suppressions)
+endif
 
 ##########################
 # Platform Configuration #