mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
5c8166419a
$(or ...) is available since GNU Make 3.81, and useful to shorten the code in some places. Covert as follows: $(if A,A,B) --> $(or A,B) This patch also converts: $(if A, A, B) --> $(or A, B) Strictly speaking, the latter is not an equivalent conversion because GNU Make keeps spaces after commas; if A is not empty, $(if A, A, B) expands to " A", while $(or A, B) expands to "A". Anyway, preceding spaces are not significant in the code hunks I touched. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
54 lines
1.4 KiB
Makefile
54 lines
1.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
include ../scripts/Makefile.include
|
|
|
|
bindir ?= /usr/bin
|
|
|
|
ifeq ($(srctree),)
|
|
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
|
|
srctree := $(patsubst %/,%,$(dir $(srctree)))
|
|
endif
|
|
|
|
# Do not use make's built-in rules
|
|
# (this improves performance and avoids hard-to-debug behaviour);
|
|
MAKEFLAGS += -r
|
|
|
|
override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
|
|
|
|
ALL_TARGETS := counter_example
|
|
ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
|
|
|
|
all: $(ALL_PROGRAMS)
|
|
|
|
export srctree OUTPUT CC LD CFLAGS
|
|
include $(srctree)/tools/build/Makefile.include
|
|
|
|
#
|
|
# We need the following to be outside of kernel tree
|
|
#
|
|
$(OUTPUT)include/linux/counter.h: ../../include/uapi/linux/counter.h
|
|
mkdir -p $(OUTPUT)include/linux 2>&1 || true
|
|
ln -sf $(CURDIR)/../../include/uapi/linux/counter.h $@
|
|
|
|
prepare: $(OUTPUT)include/linux/counter.h
|
|
|
|
COUNTER_EXAMPLE := $(OUTPUT)counter_example.o
|
|
$(COUNTER_EXAMPLE): prepare FORCE
|
|
$(Q)$(MAKE) $(build)=counter_example
|
|
$(OUTPUT)counter_example: $(COUNTER_EXAMPLE)
|
|
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
|
|
|
|
clean:
|
|
rm -f $(ALL_PROGRAMS)
|
|
rm -rf $(OUTPUT)include/linux/counter.h
|
|
find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
|
|
|
|
install: $(ALL_PROGRAMS)
|
|
install -d -m 755 $(DESTDIR)$(bindir); \
|
|
for program in $(ALL_PROGRAMS); do \
|
|
install $$program $(DESTDIR)$(bindir); \
|
|
done
|
|
|
|
FORCE:
|
|
|
|
.PHONY: all install clean FORCE prepare
|