From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Date: Mon, 9 Apr 2018 04:14:00 +0000 (-0400)
Subject: use CPPFLAGS if set
X-Git-Tag: v2.3.0~18^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6c8641e5f53a62b8fb576649648b776632115dd0;p=thirdparty%2Fknot-resolver.git

use CPPFLAGS if set

CPPFLAGS is a traditional build environment variable used to set C
pre-processor flags.  Accept these flags during the build if they've
been set.
---

diff --git a/config.mk b/config.mk
index be798d396..5a09a8666 100644
--- a/config.mk
+++ b/config.mk
@@ -34,7 +34,7 @@ INSTALL := install
 
 # Flags
 BUILD_LDFLAGS += $(LDFLAGS)
-BUILD_CFLAGS := $(CFLAGS) -std=c99 -D_GNU_SOURCE
+BUILD_CFLAGS := $(CFLAGS) $(CPPFLAGS) -std=c99 -D_GNU_SOURCE
 BUILD_CFLAGS += -Wno-unused -Wtype-limits -Wformat -Wformat-security -Wall
 BUILD_CFLAGS += -I$(abspath .) -I$(abspath lib/generic) -I$(abspath contrib)
 BUILD_CFLAGS += -DPACKAGE_VERSION="\"$(VERSION)\"" -DPREFIX="\"$(PREFIX)\"" -DMODULEDIR="\"$(MODULEDIR)\""