diff options
Diffstat (limited to 'vendor/github.com/cilium/ebpf/Makefile')
| -rw-r--r-- | vendor/github.com/cilium/ebpf/Makefile | 93 |
1 files changed, 68 insertions, 25 deletions
diff --git a/vendor/github.com/cilium/ebpf/Makefile b/vendor/github.com/cilium/ebpf/Makefile index 5d4195833..2d5f04c37 100644 --- a/vendor/github.com/cilium/ebpf/Makefile +++ b/vendor/github.com/cilium/ebpf/Makefile @@ -1,67 +1,110 @@ # The development version of clang is distributed as the 'clang' binary, # while stable/released versions have a version number attached. # Pin the default clang to a stable version. -CLANG ?= clang-11 -CFLAGS := -target bpf -O2 -g -Wall -Werror $(CFLAGS) +CLANG ?= clang-14 +STRIP ?= llvm-strip-14 +OBJCOPY ?= llvm-objcopy-14 +CFLAGS := -O2 -g -Wall -Werror $(CFLAGS) + +CI_KERNEL_URL ?= https://github.com/cilium/ci-kernels/raw/master/ # Obtain an absolute path to the directory of the Makefile. # Assume the Makefile is in the root of the repository. REPODIR := $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST)))) UIDGID := $(shell stat -c '%u:%g' ${REPODIR}) +# Prefer podman if installed, otherwise use docker. +# Note: Setting the var at runtime will always override. +CONTAINER_ENGINE ?= $(if $(shell command -v podman), podman, docker) +CONTAINER_RUN_ARGS ?= $(if $(filter ${CONTAINER_ENGINE}, podman), --log-driver=none, --user "${UIDGID}") + IMAGE := $(shell cat ${REPODIR}/testdata/docker/IMAGE) VERSION := $(shell cat ${REPODIR}/testdata/docker/VERSION) + # clang <8 doesn't tag relocs properly (STT_NOTYPE) # clang 9 is the first version emitting BTF TARGETS := \ testdata/loader-clang-7 \ testdata/loader-clang-9 \ - testdata/loader-clang-11 \ + testdata/loader-$(CLANG) \ + testdata/btf_map_init \ testdata/invalid_map \ testdata/raw_tracepoint \ testdata/invalid_map_static \ - testdata/initialized_btf_map \ + testdata/invalid_btf_map_init \ testdata/strings \ - internal/btf/testdata/relocs + testdata/freplace \ + testdata/iproute2_map_compat \ + testdata/map_spin_lock \ + testdata/subprog_reloc \ + testdata/fwd_decl \ + btf/testdata/relocs \ + btf/testdata/relocs_read \ + btf/testdata/relocs_read_tgt -.PHONY: all clean docker-all docker-shell +.PHONY: all clean container-all container-shell generate -.DEFAULT_TARGET = docker-all +.DEFAULT_TARGET = container-all -# Build all ELF binaries using a Dockerized LLVM toolchain. -docker-all: - docker run --rm --user "${UIDGID}" \ +# Build all ELF binaries using a containerized LLVM toolchain. +container-all: + ${CONTAINER_ENGINE} run --rm ${CONTAINER_RUN_ARGS} \ -v "${REPODIR}":/ebpf -w /ebpf --env MAKEFLAGS \ + --env CFLAGS="-fdebug-prefix-map=/ebpf=." \ + --env HOME="/tmp" \ "${IMAGE}:${VERSION}" \ - make all + $(MAKE) all -# (debug) Drop the user into a shell inside the Docker container as root. -docker-shell: - docker run --rm -ti \ +# (debug) Drop the user into a shell inside the container as root. +container-shell: + ${CONTAINER_ENGINE} run --rm -ti \ -v "${REPODIR}":/ebpf -w /ebpf \ "${IMAGE}:${VERSION}" clean: -$(RM) testdata/*.elf - -$(RM) internal/btf/testdata/*.elf + -$(RM) btf/testdata/*.elf + +format: + find . -type f -name "*.c" | xargs clang-format -i + +all: format $(addsuffix -el.elf,$(TARGETS)) $(addsuffix -eb.elf,$(TARGETS)) generate + ln -srf testdata/loader-$(CLANG)-el.elf testdata/loader-el.elf + ln -srf testdata/loader-$(CLANG)-eb.elf testdata/loader-eb.elf -all: $(addsuffix -el.elf,$(TARGETS)) $(addsuffix -eb.elf,$(TARGETS)) +# $BPF_CLANG is used in go:generate invocations. +generate: export BPF_CLANG := $(CLANG) +generate: export BPF_CFLAGS := $(CFLAGS) +generate: + go generate ./cmd/bpf2go/test + go generate ./internal/sys + cd examples/ && go generate ./... testdata/loader-%-el.elf: testdata/loader.c - $* $(CFLAGS) -mlittle-endian -c $< -o $@ + $* $(CFLAGS) -target bpfel -c $< -o $@ + $(STRIP) -g $@ testdata/loader-%-eb.elf: testdata/loader.c - $* $(CFLAGS) -mbig-endian -c $< -o $@ + $* $(CFLAGS) -target bpfeb -c $< -o $@ + $(STRIP) -g $@ %-el.elf: %.c - $(CLANG) $(CFLAGS) -mlittle-endian -c $< -o $@ + $(CLANG) $(CFLAGS) -target bpfel -c $< -o $@ + $(STRIP) -g $@ %-eb.elf : %.c - $(CLANG) $(CFLAGS) -mbig-endian -c $< -o $@ + $(CLANG) $(CFLAGS) -target bpfeb -c $< -o $@ + $(STRIP) -g $@ -# Usage: make VMLINUX=/path/to/vmlinux vmlinux-btf -.PHONY: vmlinux-btf -vmlinux-btf: internal/btf/testdata/vmlinux-btf.gz -internal/btf/testdata/vmlinux-btf.gz: $(VMLINUX) - objcopy --dump-section .BTF=/dev/stdout "$<" /dev/null | gzip > "$@" +.PHONY: generate-btf +generate-btf: KERNEL_VERSION?=5.18 +generate-btf: + $(eval TMP := $(shell mktemp -d)) + curl -fL "$(CI_KERNEL_URL)/linux-$(KERNEL_VERSION).bz" -o "$(TMP)/bzImage" + ./testdata/extract-vmlinux "$(TMP)/bzImage" > "$(TMP)/vmlinux" + $(OBJCOPY) --dump-section .BTF=/dev/stdout "$(TMP)/vmlinux" /dev/null | gzip > "btf/testdata/vmlinux.btf.gz" + curl -fL "$(CI_KERNEL_URL)/linux-$(KERNEL_VERSION)-selftests-bpf.tgz" -o "$(TMP)/selftests.tgz" + tar -xf "$(TMP)/selftests.tgz" --to-stdout tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.ko | \ + $(OBJCOPY) --dump-section .BTF="btf/testdata/btf_testmod.btf" - /dev/null + $(RM) -r "$(TMP)" |