--- Makefile.freebsd.orig	2022-04-14 23:17:12 UTC
+++ Makefile.freebsd
@@ -1,6 +1,6 @@
-CXX=clang++
+CXX?=clang++
 #CXXFLAGS+=-O2 -Wall -D_FILE_OFFSET_BITS=64 -D USE_UTF16 -I/usr/local/include
-CXXFLAGS+=-O2 -Wall -D_FILE_OFFSET_BITS=64 -I /usr/local/include 
+CXXFLAGS+=-O2 -Wall -D_FILE_OFFSET_BITS=64 $(CPPFLAGS)
 LDFLAGS+=-L/usr/local/lib
 LDLIBS+=-luuid #-licuio
 LIB_NAMES=crc32 support guid gptpart mbrpart basicmbr mbr gpt bsd parttypes attributes diskio diskio-unix