From: Daniel Gröber <dxld@darkboxed.org>
Date: Sun, 23 Jan 2022 21:07:36 +0100
Subject: Respect LDLFAGS and CPPFLAGS from environment

---
 Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,8 @@ CFLAGS ?= -ggdb3 -Os
 CFLAGS += -Wall -Wextra -Werror
 CFLAGS += -Wmissing-declarations -Wmissing-prototypes -Wcast-align -Wpointer-arith -Wreturn-type
 CFLAGS += ${LIBBSD_CFLAGS}
-CPPFLAGS = -I.
+CPPFLAGS ?=
+CPPFLAGS += -I.
 CPPFLAGS += -DINTERFACES_FILE=\"${INTERFACES_FILE}\"
 CPPFLAGS += -DSTATE_FILE=\"${STATE_FILE}\"
 CPPFLAGS += -DCONFIG_FILE=\"${CONFIG_FILE}\"
@@ -27,6 +28,7 @@ CPPFLAGS += -DPACKAGE_VERSION=\"${PACKAG
 CPPFLAGS += -DPACKAGE_BUGREPORT=\"${PACKAGE_BUGREPORT}\"
 CPPFLAGS += -DEXECUTOR_PATH=\"${EXECUTOR_PATH}\"
 
+LDFLAGS ?=
 
 LIBIFUPDOWN_SRC = \
 	libifupdown/list.c \
@@ -129,7 +131,7 @@ ${CMDS}: ${MULTICALL}
 	ln -sf ifupdown $@
 
 ${MULTICALL}: ${TARGET_LIBS} ${MULTICALL_OBJ}
-	${CC} -o $@ ${MULTICALL_OBJ} ${LIBS}
+	${CC} -o $@ ${LDFLAGS} ${MULTICALL_OBJ} ${LIBS}
 
 ${LIBIFUPDOWN_LIB}: ${LIBIFUPDOWN_OBJ}
 	${AR} -rcs $@ ${LIBIFUPDOWN_OBJ}