From: Teemu Hukkanen <tjhukkan@iki.fi>
Date: Sat, 16 Mar 2024 16:04:36 +0200
Subject: Use AM_CPPFLAGS instead of CPPFLAGS

---
 Makefile.am | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 285fa9f..6efd56f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,9 +6,9 @@ bin_PROGRAMS = htc hts
 man_MANS = hts.1 htc.1
 
 if SRCDIR
-CPPFLAGS += -I$(VPATH)/port
+AM_CPPFLAGS = -I$(VPATH)/port
 else
-CPPFLAGS += -Iport
+AM_CPPFLAGS = -Iport
 endif
 
 htc_SOURCES = htc.c common.c tunnel.c http.c base64.c