[gtk/ebassi/docs-fixes: 2/2] Enable fatal warnings when build the docs

[Emmanuele Bassi <ebassi src gnome org>]

commit 6d06b0f076fc0ee934b326f74cf874c78767ca07
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue May 25 13:32:32 2021 +0100

    Enable fatal warnings when build the docs
    
    We want to fail the CI pipeline when the documentation generator emits a
    warning.

 docs/reference/gdk/meson.build | 3 +++
 docs/reference/gsk/meson.build | 1 +
 docs/reference/gtk/meson.build | 1 +
 3 files changed, 5 insertions(+)
---
diff --git a/docs/reference/gdk/meson.build b/docs/reference/gdk/meson.build
index 3dc7a0ff92..d5429928e1 100644
--- a/docs/reference/gdk/meson.build
+++ b/docs/reference/gdk/meson.build
@@ -13,6 +13,7 @@ if get_option('gtk_doc')
       gidocgen,
       'generate',
       '--quiet',
+      '--fatal-warnings',
       '--add-include-path=@0@'.format(meson.current_build_dir() / '../../../gtk'),
       '--config=@INPUT0@',
       '--output-dir=@OUTPUT@',
@@ -34,6 +35,7 @@ if get_option('gtk_doc')
         gidocgen,
         'generate',
         '--quiet',
+        '--fatal-warnings',
         '--add-include-path=@0@'.format(meson.current_build_dir() / '../../../gtk'),
         '--config=@INPUT0@',
         '--output-dir=@OUTPUT@',
@@ -57,6 +59,7 @@ if get_option('gtk_doc')
         gidocgen,
         'generate',
         '--quiet',
+        '--fatal-warnings',
         '--add-include-path=@0@'.format(meson.current_build_dir() / '../../../gtk'),
         '--config=@INPUT0@',
         '--output-dir=@OUTPUT@',
diff --git a/docs/reference/gsk/meson.build b/docs/reference/gsk/meson.build
index f482f9fd6f..db80a68898 100644
--- a/docs/reference/gsk/meson.build
+++ b/docs/reference/gsk/meson.build
@@ -8,6 +8,7 @@ if get_option('gtk_doc')
       gidocgen,
       'generate',
       '--quiet',
+      '--fatal-warnings',
       '--add-include-path=@0@'.format(meson.current_build_dir() / '../../../gtk'),
       '--config=@INPUT0@',
       '--output-dir=@OUTPUT@',
diff --git a/docs/reference/gtk/meson.build b/docs/reference/gtk/meson.build
index 7452b39f4c..0d785b26de 100644
--- a/docs/reference/gtk/meson.build
+++ b/docs/reference/gtk/meson.build
@@ -37,6 +37,7 @@ if get_option('gtk_doc')
       gidocgen,
       'generate',
       '--quiet',
+      '--fatal-warnings',
       '--add-include-path=@0@'.format(meson.current_build_dir() / '../../../gtk'),
       '--config=@INPUT0@',
       '--output-dir=@OUTPUT@',