mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 11:55:53 +00:00
6ccfba75d3
It is practical to be-able-to redefine the location of the LLVM command 'llc', because not all distros have a LLVM version with bpf target support. Thus, it is sometimes required to compile LLVM from source, and sometimes it is not desired to overwrite the distros default LLVM version. This feature was removed with128d1514be("samples/bpf: Use llc in PATH, rather than a hardcoded value"). Add this features back. Note that it is possible to redefine the LLC on the make command like: make samples/bpf/ LLC=~/git/llvm/build/bin/llc Fixes:128d1514be("samples/bpf: Use llc in PATH, rather than a hardcoded value") Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
95 lines
3.2 KiB
Makefile
95 lines
3.2 KiB
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 := test_verifier test_maps
|
|
hostprogs-y += sock_example
|
|
hostprogs-y += fds_example
|
|
hostprogs-y += sockex1
|
|
hostprogs-y += sockex2
|
|
hostprogs-y += sockex3
|
|
hostprogs-y += tracex1
|
|
hostprogs-y += tracex2
|
|
hostprogs-y += tracex3
|
|
hostprogs-y += tracex4
|
|
hostprogs-y += tracex5
|
|
hostprogs-y += tracex6
|
|
hostprogs-y += trace_output
|
|
hostprogs-y += lathist
|
|
hostprogs-y += offwaketime
|
|
hostprogs-y += spintest
|
|
hostprogs-y += map_perf_test
|
|
hostprogs-y += test_overhead
|
|
|
|
test_verifier-objs := test_verifier.o libbpf.o
|
|
test_maps-objs := test_maps.o libbpf.o
|
|
sock_example-objs := sock_example.o libbpf.o
|
|
fds_example-objs := bpf_load.o libbpf.o fds_example.o
|
|
sockex1-objs := bpf_load.o libbpf.o sockex1_user.o
|
|
sockex2-objs := bpf_load.o libbpf.o sockex2_user.o
|
|
sockex3-objs := bpf_load.o libbpf.o sockex3_user.o
|
|
tracex1-objs := bpf_load.o libbpf.o tracex1_user.o
|
|
tracex2-objs := bpf_load.o libbpf.o tracex2_user.o
|
|
tracex3-objs := bpf_load.o libbpf.o tracex3_user.o
|
|
tracex4-objs := bpf_load.o libbpf.o tracex4_user.o
|
|
tracex5-objs := bpf_load.o libbpf.o tracex5_user.o
|
|
tracex6-objs := bpf_load.o libbpf.o tracex6_user.o
|
|
trace_output-objs := bpf_load.o libbpf.o trace_output_user.o
|
|
lathist-objs := bpf_load.o libbpf.o lathist_user.o
|
|
offwaketime-objs := bpf_load.o libbpf.o offwaketime_user.o
|
|
spintest-objs := bpf_load.o libbpf.o spintest_user.o
|
|
map_perf_test-objs := bpf_load.o libbpf.o map_perf_test_user.o
|
|
test_overhead-objs := bpf_load.o libbpf.o test_overhead_user.o
|
|
|
|
# Tell kbuild to always build the programs
|
|
always := $(hostprogs-y)
|
|
always += sockex1_kern.o
|
|
always += sockex2_kern.o
|
|
always += sockex3_kern.o
|
|
always += tracex1_kern.o
|
|
always += tracex2_kern.o
|
|
always += tracex3_kern.o
|
|
always += tracex4_kern.o
|
|
always += tracex5_kern.o
|
|
always += tracex6_kern.o
|
|
always += trace_output_kern.o
|
|
always += tcbpf1_kern.o
|
|
always += lathist_kern.o
|
|
always += offwaketime_kern.o
|
|
always += spintest_kern.o
|
|
always += map_perf_test_kern.o
|
|
always += test_overhead_tp_kern.o
|
|
always += test_overhead_kprobe_kern.o
|
|
|
|
HOSTCFLAGS += -I$(objtree)/usr/include
|
|
|
|
HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable
|
|
HOSTLOADLIBES_fds_example += -lelf
|
|
HOSTLOADLIBES_sockex1 += -lelf
|
|
HOSTLOADLIBES_sockex2 += -lelf
|
|
HOSTLOADLIBES_sockex3 += -lelf
|
|
HOSTLOADLIBES_tracex1 += -lelf
|
|
HOSTLOADLIBES_tracex2 += -lelf
|
|
HOSTLOADLIBES_tracex3 += -lelf
|
|
HOSTLOADLIBES_tracex4 += -lelf -lrt
|
|
HOSTLOADLIBES_tracex5 += -lelf
|
|
HOSTLOADLIBES_tracex6 += -lelf
|
|
HOSTLOADLIBES_trace_output += -lelf -lrt
|
|
HOSTLOADLIBES_lathist += -lelf
|
|
HOSTLOADLIBES_offwaketime += -lelf
|
|
HOSTLOADLIBES_spintest += -lelf
|
|
HOSTLOADLIBES_map_perf_test += -lelf -lrt
|
|
HOSTLOADLIBES_test_overhead += -lelf -lrt
|
|
|
|
# Allows pointing LLC to a LLVM backend with bpf support, redefine on cmdline:
|
|
# make samples/bpf/ LLC=~/git/llvm/build/bin/llc
|
|
LLC ?= llc
|
|
|
|
# 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) \
|
|
-D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \
|
|
-O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@
|