--- configure	2023-09-26 03:26:15.000000000 +0700
+++ configure	2023-09-27 01:56:33.000000000 +0700
@@ -2,3 +2,4 @@
 
 #! /bin/sh
 "${R_HOME}/bin/Rscript" -e "rstantools::rstan_config()"
+echo "PKG_CXXFLAGS += --param ggc-min-expand=10" >> src/Makevars