[PATCH v2 03/15] bpfilter: use 'userprogs' syntax to build bpfilter_umh

From: Masahiro Yamada
Date: Tue Apr 28 2020 - 23:46:38 EST


The user mode helper should be compiled for the same architecture as
the kernel.

This Makefile reused the 'hostprogs' syntax by overriding HOSTCC with CC.
Use the new syntax 'userprogs' to fix the Makefile mess.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
---

Changes in v2: None

net/bpfilter/Makefile | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/net/bpfilter/Makefile b/net/bpfilter/Makefile
index f6209e4827b9..f23b53294fba 100644
--- a/net/bpfilter/Makefile
+++ b/net/bpfilter/Makefile
@@ -3,18 +3,14 @@
# Makefile for the Linux BPFILTER layer.
#

-hostprogs := bpfilter_umh
+userprogs := bpfilter_umh
bpfilter_umh-objs := main.o
-KBUILD_HOSTCFLAGS += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \
- $(filter -m32 -m64, $(KBUILD_CFLAGS))
-HOSTCC := $(CC)
+userccflags += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi

-ifeq ($(CONFIG_BPFILTER_UMH), y)
-# builtin bpfilter_umh should be compiled with -static
+# builtin bpfilter_umh should be linked with -static
# since rootfs isn't mounted at the time of __init
# function is called and do_execv won't find elf interpreter
-KBUILD_HOSTLDFLAGS += -static $(filter -m32 -m64, $(KBUILD_CFLAGS))
-endif
+userldflags += -static

$(obj)/bpfilter_umh_blob.o: $(obj)/bpfilter_umh

--
2.25.1