debian: Add dependencies and rules for building docs

debian/control

@@ -7,10 +7,12 @@ Uploaders:
 Build-Depends:
  debhelper (>= 11),
  desktop-file-utils,
+ gtk-doc-tools <!nodoc>,
  libcallaudio-dev,
  libfeedback-dev,
  libhandy-1-dev (>= 1.0.0),
  libgtk-3-dev,
+ libgtk-3-doc <!nodoc>,
  modemmanager-dev,
  libmm-glib-dev (>= 1.12.0),
  libpeas-dev,

debian/rules

@@ -2,9 +2,25 @@
 
 export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 
+ifeq ($(filter nodoc,$(DEB_BUILD_PROFILES)),)
+  CONFIGURE_OPTS+=-Dgtk_doc=true
+else
+  CONFIGURE_OPTS+=-Dgtk_doc=false
+endif
+
 %:
 	dh $@ -- -B_build
 
+override_dh_auto_configure:
+	dh_auto_configure -- $(CONFIGURE_OPTS)
+
+override_dh_auto_build:
+	dh_auto_build
+ifeq ($(filter nodoc,$(DEB_BUILD_PROFILES)),)
+	# https://github.com/mesonbuild/meson/pull/2862
+	ninja -C _build/ calls-doc
+endif
+
 override_dh_auto_test:
 ifeq ($(filter nocheck,$(DEB_BUILD_OPTIONS)),)
 	xvfb-run ninja -C _build test