[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / samples / sockmap / Makefile

# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o

# List of programs to build
hostprogs-y := sockmap

# Libbpf dependencies
LIBBPF := ../../tools/lib/bpf/bpf.o

HOSTCFLAGS += -I$(objtree)/usr/include
HOSTCFLAGS += -I$(srctree)/tools/lib/
HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
HOSTCFLAGS += -I$(srctree)/tools/perf

sockmap-objs := ../bpf/bpf_load.o $(LIBBPF) sockmap_user.o

# Tell kbuild to always build the programs
always := $(hostprogs-y)
always += sockmap_kern.o

HOSTLOADLIBES_sockmap += -lelf -lpthread

# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
#  make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
LLC ?= llc
CLANG ?= clang

# Trick to allow make to be run from this directory
all:
	$(MAKE) -C ../../ $(CURDIR)/

clean:
	$(MAKE) -C ../../ M=$(CURDIR) clean
	@rm -f *~

$(obj)/syscall_nrs.s:	$(src)/syscall_nrs.c
	$(call if_changed_dep,cc_s_c)

$(obj)/syscall_nrs.h:	$(obj)/syscall_nrs.s FORCE
	$(call filechk,offsets,__SYSCALL_NRS_H__)

clean-files += syscall_nrs.h

FORCE:


# Verify LLVM compiler tools are available and bpf target is supported by llc
.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)

verify_cmds: $(CLANG) $(LLC)
	@for TOOL in $^ ; do \
		if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
			echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
			exit 1; \
		else true; fi; \
	done

verify_target_bpf: verify_cmds
	@if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
		echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
		echo "   NOTICE: LLVM version >= 3.7.1 required" ;\
		exit 2; \
	else true; fi

$(src)/*.c: verify_target_bpf

# asm/sysreg.h - inline assembly used by it is incompatible with llvm.
# But, there is no easy way to fix it, so just exclude it since it is
# useless for BPF samples.
$(obj)/%.o: $(src)/%.c
	$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
		-D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
		-Wno-compare-distinct-pointer-types \
		-Wno-gnu-variable-sized-type-not-at-end \
		-Wno-address-of-packed-member -Wno-tautological-compare \
		-Wno-unknown-warning-option \
		-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
Commit	Line	Data
69e8cc13 JF	1	# kbuild trick to avoid linker error. Can be omitted if a module is built.
	2	obj- := dummy.o
	3
	4	# List of programs to build
	5	hostprogs-y := sockmap
	6
	7	# Libbpf dependencies
	8	LIBBPF := ../../tools/lib/bpf/bpf.o
	9
	10	HOSTCFLAGS += -I$(objtree)/usr/include
	11	HOSTCFLAGS += -I$(srctree)/tools/lib/
	12	HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/
	13	HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include
	14	HOSTCFLAGS += -I$(srctree)/tools/perf
	15
	16	sockmap-objs := ../bpf/bpf_load.o $(LIBBPF) sockmap_user.o
	17
	18	# Tell kbuild to always build the programs
	19	always := $(hostprogs-y)
	20	always += sockmap_kern.o
	21
	22	HOSTLOADLIBES_sockmap += -lelf -lpthread
	23
	24	# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
	25	# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang
	26	LLC ?= llc
	27	CLANG ?= clang
	28
	29	# Trick to allow make to be run from this directory
	30	all:
	31	$(MAKE) -C ../../ $(CURDIR)/
	32
	33	clean:
	34	$(MAKE) -C ../../ M=$(CURDIR) clean
	35	@rm -f *~
	36
	37	$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c
	38	$(call if_changed_dep,cc_s_c)
	39
	40	$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE
	41	$(call filechk,offsets,__SYSCALL_NRS_H__)
	42
	43	clean-files += syscall_nrs.h
	44
	45	FORCE:
	46
	47
	48	# Verify LLVM compiler tools are available and bpf target is supported by llc
	49	.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC)
	50
	51	verify_cmds: $(CLANG) $(LLC)
	52	@for TOOL in $^ ; do \
	53	if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \
	54	echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\
	55	exit 1; \
	56	else true; fi; \
	57	done
	58
	59	verify_target_bpf: verify_cmds
	60	@if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \
	61	echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\
	62	echo " NOTICE: LLVM version >= 3.7.1 required" ;\
	63	exit 2; \
	64	else true; fi
65
66	$(src)/*.c: verify_target_bpf
67
68	# asm/sysreg.h - inline assembly used by it is incompatible with llvm.
69	# But, there is no easy way to fix it, so just exclude it since it is
70	# useless for BPF samples.
71	$(obj)/%.o: $(src)/%.c
72	$(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \
73	-D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
74	-Wno-compare-distinct-pointer-types \
75	-Wno-gnu-variable-sized-type-not-at-end \
76	-Wno-address-of-packed-member -Wno-tautological-compare \
77	-Wno-unknown-warning-option \
78	-O2 -emit-llvm -c $< -o -\| $(LLC) -march=bpf -filetype=obj -o $@