tools/spi/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 include ../scripts/Makefile.include
   3
   4 bindir ?= /usr/bin
   5
   6 ifeq ($(srctree),)
   7 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
   8 srctree := $(patsubst %/,%,$(dir $(srctree)))
   9 endif
  10
  11 # Do not use make's built-in rules
  12 # (this improves performance and avoids hard-to-debug behaviour);
  13 MAKEFLAGS += -r
  14
  15 CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
  16
  17 ALL_TARGETS := spidev_test spidev_fdx
  18 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
  19
  20 all: $(ALL_PROGRAMS)
  21
  22 export srctree OUTPUT CC LD CFLAGS
  23 include $(srctree)/tools/build/Makefile.include
  24
  25 #
  26 # We need the following to be outside of kernel tree
  27 #
  28 $(OUTPUT)include/linux/spi: ../../include/uapi/linux/spi
  29         mkdir -p $(OUTPUT)include/linux/spi 2>&1 || true
  30         ln -sf $(CURDIR)/../../include/uapi/linux/spi/spidev.h $@
  31         ln -sf $(CURDIR)/../../include/uapi/linux/spi/spi.h $@
  32
  33 prepare: $(OUTPUT)include/linux/spi
  34
  35 #
  36 # spidev_test
  37 #
  38 SPIDEV_TEST_IN := $(OUTPUT)spidev_test-in.o
  39 $(SPIDEV_TEST_IN): prepare FORCE
  40         $(Q)$(MAKE) $(build)=spidev_test
  41 $(OUTPUT)spidev_test: $(SPIDEV_TEST_IN)
  42         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  43
  44 #
  45 # spidev_fdx
  46 #
  47 SPIDEV_FDX_IN := $(OUTPUT)spidev_fdx-in.o
  48 $(SPIDEV_FDX_IN): prepare FORCE
  49         $(Q)$(MAKE) $(build)=spidev_fdx
  50 $(OUTPUT)spidev_fdx: $(SPIDEV_FDX_IN)
  51         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  52
  53 clean:
  54         rm -f $(ALL_PROGRAMS)
  55         rm -rf $(OUTPUT)include/
  56         find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete
  57         find $(if $(OUTPUT),$(OUTPUT),.) -name '\.*.o.d' -delete
  58         find $(if $(OUTPUT),$(OUTPUT),.) -name '\.*.o.cmd' -delete
  59
  60 install: $(ALL_PROGRAMS)
  61         install -d -m 755 $(DESTDIR)$(bindir);          \
  62         for program in $(ALL_PROGRAMS); do              \
  63                 install $$program $(DESTDIR)$(bindir);  \
  64         done
  65
  66 FORCE:
  67
  68 .PHONY: all install clean FORCE prepare