--- freebsd/lib/libcxxrt/Makefile	2024-05-30 14:27:42.328086005 -0700
+++ freebsd/lib/libcxxrt/Makefile.mod	2024-05-30 14:27:48.048014581 -0700
@@ -19,6 +19,8 @@
 SRCS+=		terminate.cc
 SRCS+=		typeinfo.cc
 
+INCS+=cxxabi.h
+
 WARNS?=		0
 CFLAGS+=	-isystem ${SRCDIR} -nostdinc++
 CXXSTD?=	c++14