--- src/Makevars.in	2023-01-29 22:46:36.000000000 +0800
+++ src/Makevars.in	2024-09-15 21:42:00.000000000 +0800
@@ -1,4 +1,4 @@
-PKG_CPPFLAGS=-I. @cflags@
+PKG_CPPFLAGS=-I. @cflags@ -D_GLIBCXX_USE_CXX11_ABI=0
 PKG_LIBS=-Llibcld3 -lstatcld3 @libs@
 STATLIB=libcld3/libstatcld3.a