[gnome-shell] meson.build: Add more compilation warnings

[Florian Müllner <fmuellner src gnome org>]

commit 9593e20425b9c0463f0acee2233f152e0fc3030e
Author: Robert Mader <robert mader posteo de>
Date:   Tue Mar 5 23:46:47 2019 +0100

    meson.build: Add more compilation warnings
    
    Use the same warnings as mutter.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/441

 meson.build | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
---
diff --git a/meson.build b/meson.build
index e3500d440..f85ce116e 100644
--- a/meson.build
+++ b/meson.build
@@ -167,6 +167,48 @@ cdata.set('HAVE_FDWALK',
           cc.has_function('fdwalk')
 )
 
+all_warnings = [
+  '-fno-strict-aliasing',
+  '-Wpointer-arith',
+  '-Wmissing-declarations',
+  '-Wimplicit-function-declaration',
+  '-Wformat=2',
+  '-Wformat-nonliteral',
+  '-Wformat-security',
+  '-Wstrict-prototypes',
+  '-Wmissing-prototypes',
+  '-Wnested-externs',
+  '-Wold-style-definition',
+  '-Wundef',
+  '-Wunused',
+  '-Wcast-align',
+  '-Wmissing-noreturn',
+  '-Wmissing-format-attribute',
+  '-Wmissing-include-dirs',
+  '-Wlogical-op',
+  '-Wignored-qualifiers',
+  '-Werror=redundant-decls',
+  '-Werror=implicit',
+  '-Werror=nonnull',
+  '-Werror=init-self',
+  '-Werror=main',
+  '-Werror=missing-braces',
+  '-Werror=sequence-point',
+  '-Werror=return-type',
+  '-Werror=trigraphs',
+  '-Werror=array-bounds',
+  '-Werror=write-strings',
+  '-Werror=address',
+  '-Werror=int-to-pointer-cast',
+  '-Werror=pointer-to-int-cast',
+  '-Werror=empty-body',
+  '-Werror=write-strings',
+]
+
+supported_warnings = cc.get_supported_arguments(all_warnings)
+
+add_project_arguments(supported_warnings, language: 'c')
+
 config_h = configure_file(
   input: 'config.h.meson',
   output: 'config.h',