Add back gtk_doc option

This is needed to disable gtk_doc in subprojects that have that option
yielding.

diff --git a/meson_options.txt b/meson_options.txt
index 6e565bc..de4243c 100644 (file)
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -17,3 +17,4 @@ option('introspection', type : 'feature', value : 'auto', description : 'Generat
 option('nls', type : 'feature', value : 'auto', description : 'Enable native language support (translations)')
 option('orc', type : 'feature', value : 'auto', description : 'Enable Optimized Inner Loop Runtime Compiler')
 option('doc', type : 'feature', value : 'auto', description : 'Generate API documentation with hotdoc')
+option('gtk_doc', type : 'feature', value : 'auto', description : 'Generate API documentation with gtk-doc')