From aa07e4be0060750b31bb2f7664b6de003b86aa01 Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.com>
Date: Tue, 23 Aug 2016 18:04:37 +0200
Subject: [PATCH] btrfs-progs: build: add per-tool cflags variable

The standalone tools are built from pattern rules, add support for
per-tool cflaags, like btrfs_something_clfags.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 Makefile.in | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 9e0cb4c..1928a4e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -221,15 +221,18 @@ endif
 %.o.d: %.c
 	$(Q)$(CC) -MM -MG -MF $@ -MT $(@:.o.d=.o) -MT $(@:.o.d=.static.o) -MT $@ $(CFLAGS) $<
 
+#
+# Pick from per-file variables, btrfs_*_cflags
+#
 .c.o:
 	@$(check_echo) "    [SP]     $<"
 	$(Q)$(check) $(CFLAGS) $(CHECKER_FLAGS) $<
 	@echo "    [CC]     $@"
-	$(Q)$(CC) $(CFLAGS) -c $<
+	$(Q)$(CC) $(CFLAGS) -c $< $($(subst -,_,$(@:%.o=%)-cflags))
 
 %.static.o: %.c
 	@echo "    [CC]     $@"
-	$(Q)$(CC) $(STATIC_CFLAGS) -c $< -o $@
+	$(Q)$(CC) $(STATIC_CFLAGS) -c $< -o $@ $($(subst -,_,$(@:%.static.o=%)-cflags))
 
 all: $(progs) $(BUILDDIRS)
 $(SUBDIRS): $(BUILDDIRS)
-- 
2.7.4