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samples: connector: build sample program for target architecture 

This userspace program includes UAPI headers exported to usr/include/.
'make headers' always works for the target architecture (i.e. the same
architecture as the kernel), so the sample program should be built for
the target as well. Kbuild now supports 'userprogs' for that.

$(CC) can always compile cn_text.o since it is the kenrel-space code,
but building ucon requires libc.

I guarded it by:

  always-$(CONFIG_CC_CAN_LINK) := $(userprogs)

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
alistair/sunxi64-5.8
Masahiro Yamada 2020-04-29 12:45:21 +09:00
parent 82d00a9392
commit 37249f5945
1 changed files with 3 additions and 9 deletions
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12
samples/connector/Makefile
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@ -1,13 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_SAMPLE_CONNECTOR) += cn_test.o
# List of programs to build
hostprogs := ucon
always-y := $(hostprogs)
userprogs := ucon
always-$(CONFIG_CC_CAN_LINK) := $(userprogs)
HOSTCFLAGS_ucon.o += -I$(objtree)/usr/include
all: modules
modules clean:
$(MAKE) -C ../.. M=$(CURDIR) $@
userccflags += -I usr/include