File: pass-down-cflags.patch

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From: Loïc Minier <lool@debian.org>
Subject: Pass down CPPFLAGS and CFLAGS from rules as to use dpkg-buildflags, hardening flags in particular

--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,8 @@
 
 
 CC = gcc
-CFLAGS = -O2 -finline-functions -fno-strict-aliasing -g
+CFLAGS += $(CPPFLAGS)
+CFLAGS += -O2 -finline-functions -fno-strict-aliasing -g
 CFLAGS += -Wall -Wwrite-strings
 LDFLAGS += -g -Wl,--as-needed
 LD = gcc