Does this work

gnome-extra/evolution-data-server/evolution-data-server-3.62.1.ebuild

@@ -124,8 +124,7 @@ src_configure() {
 		-DWITH_KRB5_INCLUDES=$(usex kerberos "${EPREFIX}"/usr "")
 		-DWITH_KRB5_LIBS=$(usex kerberos "${EPREFIX}"/usr/$(get_libdir) "")
 		-DWITH_OPENLDAP=$(usex ldap)
-		#-DWITH_PHONENUMBER=$(usex phonenumber "${EPREFIX}"/usr/$(get_libdir) "")
-		-DWITH_PHONENUMBER=OFF
+		-DENABLE_PHONENUMBER=$(usex phonenumber)
 		-DENABLE_SMIME=ON
 		-DENABLE_GTK=$(usex gtk)
 		-DENABLE_GTK4=$(usex gtk)