From 788a52c399f4731ac1fb27a49db48626f3e140e1 Mon Sep 17 00:00:00 2001
From: anthraxx <levente@leventepolyak.net>
Date: Tue, 2 Apr 2019 14:53:28 +0200
Subject: [PATCH] respect existence of distro CFLAGS and CPPFLAGS

- append CFLAGS instead of set to honor default distro CFLAGS
- add CPPFLAGS that are defined by distros
---
 Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index e4ded69..7fef84a 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@
 #
 OFLAGS = -O0 -g
 OFLAGS  = -O2
-CFLAGS  = -std=gnu99 -fPIC -Wall -Wno-format-truncation $(OFLAGS)
+CFLAGS  += -std=gnu99 -fPIC -Wall -Wno-format-truncation $(OFLAGS)
 
 SHELL = /bin/sh
 TAR = tar
@@ -68,17 +68,17 @@ all: libgif.so libgif.a libutil.so libutil.a $(UTILS)
 ifeq ($(UNAME), Darwin)
 	$(CC) $(CFLAGS) -dynamiclib -current_version $(LIBVER) $(OBJECTS) -o $(LIBGIFSO)
 else
-	$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,$(LIBGIFSOMAJOR) -o $(LIBGIFSO) $(OBJECTS)
+	$(CC) $(CFLAGS) $(CPPFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,$(LIBGIFSOMAJOR) -o $(LIBGIFSO) $(OBJECTS)
 endif
 
 libgif.a: $(OBJECTS) $(HEADERS)
 	$(AR) rcs libgif.a $(OBJECTS)
 
 $(LIBUTILSO): $(UOBJECTS) $(UHEADERS)
 ifeq ($(UNAME), Darwin)
 	$(CC) $(CFLAGS) -dynamiclib -current_version $(LIBVER) $(OBJECTS) -o $(LIBUTILSO)
 else
-	$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,$(LIBUTILMAJOR) -o $(LIBUTILSO) $(UOBJECTS)
+	$(CC) $(CFLAGS) $(CPPFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,$(LIBUTILMAJOR) -o $(LIBUTILSO) $(UOBJECTS)
 endif
 
 libutil.a: $(UOBJECTS) $(UHEADERS)
-- 
2.21.0