[glib: 1/2] build: Add -Wno-pedantic flag to compiler arguments

[Emmanuele Bassi <ebassi src gnome org>]

commit 5c05af9acae9d5b2d5fec8544f974d866335c2a6
Author: Philip Withnall <withnall endlessm com>
Date:   Wed Jan 23 13:38:40 2019 +0000

    build: Add -Wno-pedantic flag to compiler arguments
    
    We do not support building with -Wpedantic due pervasively casting
    function pointers through (void*) — see
    https://wiki.gnome.org/Projects/GLib/CompilerRequirements#Function_pointer_conversions.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    Helps https://gitlab.gnome.org/GNOME/glib/issues/1662

 meson.build | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/meson.build b/meson.build
index 04ca8c2b0..e8a5ae792 100644
--- a/meson.build
+++ b/meson.build
@@ -355,6 +355,9 @@ if cc.get_id() == 'gcc' or cc.get_id() == 'clang'
     # Due to pervasive use of things like GPOINTER_TO_UINT(), we do not support
     # building with -Wbad-function-cast.
     '-Wno-bad-function-cast',
+    # Due to function casts through (void*) we cannot support -Wpedantic:
+    # https://wiki.gnome.org/Projects/GLib/CompilerRequirements#Function_pointer_conversions.
+    '-Wno-pedantic',
     '-Werror=declaration-after-statement',
     '-Werror=format=2',
     '-Werror=implicit-function-declaration',