Split developer documentation into a libsoup-doc.noarch subpackage

Split developer documentation files into a separate package, to avoid
multilib conflicts on the libsoup-devel subpackage. The change will
also follow a usual packaging way of the developer documentation in Fedora.

libsoup.spec

@@ -1,5 +1,8 @@
 %define glib2_version 2.58.0
 
+# Coverity scan can override this to 0, to skip checking in gtk-doc generated code
+%{!?with_docs: %global with_docs 1}
+
 Name: libsoup
 Version: 2.72.0
 Release: 3%{?dist}
@@ -12,7 +15,9 @@ Source0: https://download.gnome.org/sources/%{name}/2.72/%{name}-%{version}.tar.
 BuildRequires: gettext
 BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: glib-networking
+%if %{with_docs}
 BuildRequires: gtk-doc
+%endif
 BuildRequires: krb5-devel
 BuildRequires: meson
 BuildRequires: pkgconfig(gobject-introspection-1.0)
@@ -46,11 +51,29 @@ Requires: %{name}%{?_isa} = %{version}-%{release}
 Libsoup is an HTTP library implementation in C. This package allows
 you to develop applications that use the libsoup library.
 
+%if %{with_docs}
+
+%package doc
+Summary: Documentation files for %{name}
+BuildArch: noarch
+
+%description doc
+This package contains developer documentation for %{name}.
+
+# %%{with_docs}
+%endif
+
 %prep
 %autosetup -p1
 
 %build
-%meson -Dgtk_doc=true
+%if %{with_docs}
+%define gtkdoc_flags -Dgtk_doc=true
+%else
+%define gtkdoc_flags -Dgtk_doc=false
+%endif
+
+%meson %gtkdoc_flags
 %meson_build
 
 %install
@@ -79,14 +102,20 @@ sed -i -e 's/sysprof-capture-4, //' $RPM_BUILD_ROOT%{_libdir}/pkgconfig/*.pc
 %{_libdir}/pkgconfig/*.pc
 %dir %{_datadir}/gir-1.0
 %{_datadir}/gir-1.0/Soup*2.4.gir
-%dir %{_datadir}/gtk-doc
-%dir %{_datadir}/gtk-doc/html
-%{_datadir}/gtk-doc/html/%{name}-2.4
 %dir %{_datadir}/vala
 %dir %{_datadir}/vala/vapi
 %{_datadir}/vala/vapi/libsoup-2.4.deps
 %{_datadir}/vala/vapi/libsoup-2.4.vapi
 
+%if %{with_docs}
+
+%files doc
+%dir %{_datadir}/gtk-doc
+%dir %{_datadir}/gtk-doc/html
+%{_datadir}/gtk-doc/html/%{name}-2.4
+
+%endif
+
 %changelog
 * Sun Sep 20 2020 Kalev Lember <klember@redhat.com> - 2.72.0-3
 - Try harder to avoid sysprof-devel dependency