Subject: [PATCH] Support separation of SRCDIR and OBJDIR

Typical use of VPATH to locate the sources.

Upstream-Status: Pending

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Maxin B. John <maxin.john@intel.com>
---
diff -Naur iw-4.3-origin/Makefile iw-4.3/Makefile
--- iw-4.3-origin/Makefile	2015-11-20 16:37:58.752077287 +0200
+++ iw-4.3/Makefile	2015-11-20 16:57:15.510615815 +0200
@@ -1,5 +1,7 @@
 MAKEFLAGS += --no-print-directory
-
+SRCDIR ?= $(dir $(lastword $(MAKEFILE_LIST)))
+OBJDIR ?= $(PWD)
+VPATH = $(SRCDIR)
 PREFIX ?= /usr
 SBINDIR ?= $(PREFIX)/sbin
 MANDIR ?= $(PREFIX)/share/man
@@ -95,11 +97,11 @@
 version.c: version.sh $(patsubst %.o,%.c,$(VERSION_OBJS)) nl80211.h iw.h Makefile \
 		$(wildcard .git/index .git/refs/tags)
 	@$(NQ) ' GEN ' $@
-	$(Q)./version.sh $@
+	$(Q)cd $(SRCDIR) && ./version.sh $(OBJDIR)/$@
 
 %.o: %.c iw.h nl80211.h
 	@$(NQ) ' CC  ' $@
-	$(Q)$(CC) $(CFLAGS) -c -o $@ $<
+	$(Q)$(CC) -I$(SRCDIR) $(CFLAGS) -c -o $@ $<
 
 ifeq ($(IW_ANDROID_BUILD),)
 iw:	$(OBJS)