[gtk+] build: Add common flags to GDK backends

[Emmanuele Bassi <ebassi src gnome org>]

commit 9e8ba70d6905a7d7ddb45307ca06a1d627490480
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Apr 28 22:26:32 2017 +0100

    build: Add common flags to GDK backends
    
    The common compiler and linker flags control, among other things, the
    default visibility of symbols; without them, we leak symbols that ought
    to be private.

 gdk/broadway/meson.build |    7 ++++++-
 gdk/wayland/meson.build  |    3 ++-
 gdk/x11/meson.build      |    3 ++-
 3 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/gdk/broadway/meson.build b/gdk/broadway/meson.build
index b80e134..666fb6a 100644
--- a/gdk/broadway/meson.build
+++ b/gdk/broadway/meson.build
@@ -35,7 +35,12 @@ gdk_broadway_deps = [shmlib]
 libgdk_broadway = static_library('gdk-broadway',
   gdk_broadway_sources, gdkconfig, gdkenum_h,
   include_directories: [confinc, gdkinc],
-  c_args: ['-DGDK_COMPILATION', '-DG_LOG_DOMAIN="Gdk"'],
+  c_args: [
+    '-DGDK_COMPILATION',
+    '-DG_LOG_DOMAIN="Gdk"',
+    '-DG_LOG_USE_STRUCTURED=1',
+  ] + common_cflags,
+  link_args: common_ldflags,
   dependencies: [gdk_deps, gdk_broadway_deps])
 
 # gtk4-broadwayd
diff --git a/gdk/wayland/meson.build b/gdk/wayland/meson.build
index ff5674f..1753ef9 100644
--- a/gdk/wayland/meson.build
+++ b/gdk/wayland/meson.build
@@ -99,5 +99,6 @@ libgdk_wayland = static_library('gdk-wayland',
                                   '-DGDK_COMPILATION',
                                   '-DG_LOG_DOMAIN="Gdk"',
                                   '-DG_LOG_USE_STRUCTURED=1',
-                                ],
+                                ] + common_cflags,
+                                link_args: common_ldflags,
                                 dependencies: [ gdk_deps, gdk_wayland_deps, ])
diff --git a/gdk/x11/meson.build b/gdk/x11/meson.build
index ca63423..5cc6e98 100644
--- a/gdk/x11/meson.build
+++ b/gdk/x11/meson.build
@@ -74,5 +74,6 @@ libgdk_x11 = static_library('gdk-x11',
                               '-DGDK_COMPILATION',
                               '-DG_LOG_DOMAIN="Gdk"',
                               '-DG_LOG_USE_STRUCTURED=1',
-                            ],
+                            ] + common_cflags,
+                            link_args: common_ldflags,
                             dependencies: [ gdk_deps, gdk_x11_deps, ])