From f4d7347f5ac17f208f75ab3da054e5520f60d6f9 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Wed, 13 Nov 2024 14:36:01 -0500
Subject: Move warning suppression flags to main meson file

---
 meson.build | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 178 insertions(+), 8 deletions(-)

(limited to 'meson.build')

diff --git a/meson.build b/meson.build
index e00ddd6..c903f98 100644
--- a/meson.build
+++ b/meson.build
@@ -20,9 +20,9 @@ major_version = meson.project_version().split('.')[0]
 version_suffix = '-@0@'.format(major_version)
 versioned_name = 'ganv' + version_suffix
 
-#######################
-# Compilers and Flags #
-#######################
+#############################
+# Compilers and Build Tools #
+#############################
 
 # Required tools
 pkg = import('pkgconfig')
@@ -30,13 +30,183 @@ gnome = import('gnome')
 cc = meson.get_compiler('c')
 cpp = meson.get_compiler('cpp')
 
-# Set global warning suppressions
-subdir('meson/suppressions')
-add_project_arguments(c_suppressions, language: ['c'])
-if is_variable('cpp')
-  add_project_arguments(cpp_suppressions, language: ['cpp'])
+########################
+# Warning Suppressions #
+########################
+
+warning_level = get_option('warning_level')
+
+clang_common_suppressions = [
+  '-Wno-cast-qual',
+  '-Wno-covered-switch-default',
+  '-Wno-disabled-macro-expansion',
+  '-Wno-documentation-unknown-command',
+  '-Wno-double-promotion',
+  '-Wno-float-conversion',
+  '-Wno-float-equal',
+  '-Wno-implicit-fallthrough',
+  '-Wno-implicit-float-conversion',
+  '-Wno-padded',
+  '-Wno-reserved-id-macro',
+  '-Wno-reserved-identifier',
+  '-Wno-shadow',
+  '-Wno-shorten-64-to-32',
+  '-Wno-sign-conversion',
+  '-Wno-switch-default',
+  '-Wno-switch-enum',
+  '-Wno-unused-macros',
+  '-Wno-used-but-marked-unused',
+]
+
+gcc_common_suppressions = [
+  '-Wno-cast-qual',
+  '-Wno-conversion',
+  '-Wno-deprecated-declarations',
+  '-Wno-double-promotion',
+  '-Wno-float-conversion',
+  '-Wno-float-equal',
+  '-Wno-format',
+  '-Wno-implicit-fallthrough',
+  '-Wno-padded',
+  '-Wno-shadow',
+  '-Wno-sign-conversion',
+  '-Wno-suggest-attribute=const',
+  '-Wno-suggest-attribute=pure',
+  '-Wno-switch-default',
+  '-Wno-switch-enum',
+  '-Wno-unused-macros',
+]
+
+# C
+c_suppressions = []
+if cc.get_id() == 'clang'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-bad-function-cast',
+      '-Wno-declaration-after-statement',
+      '-Wno-documentation',
+      '-Wno-unsafe-buffer-usage',
+    ]
+
+    if host_machine.system() == 'freebsd'
+      c_suppressions += [
+        '-Wno-c11-extensions',
+      ]
+    endif
+  endif
+
+  if warning_level in ['everything', '3']
+    c_suppressions += (
+      clang_common_suppressions + [
+        '-Wno-cast-function-type',
+        '-Wno-pedantic',
+      ]
+    )
+  endif
+
+elif cc.get_id() == 'gcc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '-Wno-bad-function-cast',
+      '-Wno-c++-compat',
+      '-Wno-unsuffixed-float-constants',
+    ]
+  endif
+
+  if warning_level in ['everything', '3']
+    c_suppressions += (
+      gcc_common_suppressions + [
+        '-Wno-pedantic',
+      ]
+    )
+  endif
+
+  if warning_level in ['everything', '3', '2']
+    c_suppressions += (
+      gcc_common_suppressions + [
+        '-Wno-cast-function-type',
+      ]
+    )
+  endif
+
+elif cc.get_id() == 'msvc'
+  if warning_level == 'everything'
+    c_suppressions += [
+      '/wd4061', # enumerator in switch is not explicitly handled
+      '/wd4100', # unreferenced formal parameter
+      '/wd4191', # unsafe function conversion
+      '/wd4200', # zero-sized array in struct/union
+      '/wd4244', # possible loss of data from integer conversion
+      '/wd4267', # possible loss of data from size conversion
+      '/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
+      '/wd4800', # implicit conversion from int to bool
+      '/wd4820', # padding added after construct
+      '/wd4996', # POSIX name for this item is deprecated
+      '/wd5045', # compiler will insert Spectre mitigation
+    ]
+  endif
 endif
 
+c_suppressions = cc.get_supported_arguments(c_suppressions)
+
+# C++
+cpp_suppressions = []
+if cpp.get_id() == 'clang'
+  cpp_suppressions += clang_common_suppressions
+
+  if warning_level == 'everything'
+    cpp_suppressions += [
+      '-Wno-c++98-compat',
+      '-Wno-exit-time-destructors',
+      '-Wno-global-constructors',
+      '-Wno-missing-noreturn',
+      '-Wno-old-style-cast',
+      '-Wno-unsafe-buffer-usage',
+      '-Wno-weak-vtables',
+      '-Wno-zero-as-null-pointer-constant',
+    ]
+  endif
+
+  if warning_level in ['everything', '3']
+    cpp_suppressions += [
+      '-Wno-cast-function-type',
+    ]
+  endif
+
+elif cpp.get_id() == 'gcc'
+  cpp_suppressions += gcc_common_suppressions
+
+  if warning_level == 'everything'
+    cpp_suppressions += [
+      '-Wno-effc++',
+      '-Wno-missing-noreturn',
+      '-Wno-null-dereference',
+      '-Wno-old-style-cast',
+      '-Wno-redundant-tags',
+      '-Wno-useless-cast',
+      '-Wno-zero-as-null-pointer-constant',
+    ]
+  endif
+
+  if warning_level in ['everything', '3']
+    cpp_suppressions += [
+      '-Wno-pedantic',
+    ]
+  endif
+
+  if warning_level in ['everything', '3', '2']
+    cpp_suppressions += [
+      '-Wno-cast-function-type',
+    ]
+  endif
+endif
+
+cpp_suppressions = cpp.get_supported_arguments(cpp_suppressions)
+
 ################
 # Dependencies #
 ################
-- 
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