librav1e: Add SOVERSION guard

%ci:no-build

packages/librav1e/build.sh

@@ -9,6 +9,17 @@ TERMUX_PKG_AUTO_UPDATE=true
 TERMUX_PKG_UPDATE_VERSION_REGEXP="\d+\.\d+\.\d+"
 TERMUX_PKG_BUILD_IN_SRC=true
 
+termux_step_post_get_source() {
+	# Do not forget to bump revision of reverse dependencies and rebuild them
+	# after SOVERSION is changed.
+	local _SOVERSION=0
+
+	local v=$(echo ${TERMUX_PKG_VERSION#*:} | cut -d . -f 1)
+	if [ "${v}" != "${_SOVERSION}" ]; then
+		termux_error_exit "SOVERSION guard check failed."
+	fi
+}
+
 termux_step_make_install(){
 	termux_setup_rust