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https://github.com/gravitational/teleport
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942c0652d1
Currently, a lot of makefile logic is copied between OSS end Ent repo. This PR moves BPF-related code to common.mk, so it doesn't need to be copied between reports. I'll move more code in the following PRs. I just want to keep diffs small.
51 lines
2.5 KiB
Makefile
51 lines
2.5 KiB
Makefile
# Common makefile shared between Teleport OSS and Ent.
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# libbpf version required by the build.
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LIBBPF_VER := 1.0.1
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# Is this build targeting the same OS & architecture it is being compiled on, or
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# will it require cross-compilation? We need to know this (especially for ARM) so we
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# can set the cross-compiler path (and possibly feature flags) correctly.
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IS_NATIVE_BUILD ?= $(if $(filter $(ARCH), $(shell go env GOARCH)),"yes","no")
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# BPF support will only be built into Teleport if headers exist at build time.
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BPF_MESSAGE := without-BPF-support
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# We don't compile BPF for anything except regular non-FIPS linux/amd64 for now, as other builds
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# have compilation issues that require fixing.
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with_bpf := no
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ifeq ("$(OS)","linux")
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# True if $ARCH == amd64 || $ARCH == arm64
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ifneq (,$(filter "$(ARCH)","amd64" "arm64"))
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# We only support BPF in native builds
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ifeq ($(IS_NATIVE_BUILD),"yes")
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ifneq ("$(wildcard /usr/libbpf-${LIBBPF_VER}/include/bpf/bpf.h)","")
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with_bpf := yes
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BPF_TAG := bpf
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BPF_MESSAGE := with-BPF-support
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CLANG ?= $(shell which clang || which clang-10)
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LLVM_STRIP ?= $(shell which llvm-strip || which llvm-strip-10)
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KERNEL_ARCH := $(shell uname -m | sed 's/x86_64/x86/g; s/aarch64/arm64/g')
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INCLUDES :=
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ER_BPF_BUILDDIR := lib/bpf/bytecode
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RS_BPF_BUILDDIR := lib/restrictedsession/bytecode
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# Get Clang's default includes on this system. We'll explicitly add these dirs
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# to the includes list when compiling with `-target bpf` because otherwise some
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# architecture-specific dirs will be "missing" on some architectures/distros -
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# headers such as asm/types.h, asm/byteorder.h, asm/socket.h, asm/sockios.h,
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# sys/cdefs.h etc. might be missing.
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#
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# Use '-idirafter': Don't interfere with include mechanics except where the
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# build would have failed anyways.
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CLANG_BPF_SYS_INCLUDES = $(shell $(CLANG) -v -E - </dev/null 2>&1 \
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| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
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STATIC_LIBS += -L/usr/libbpf-${LIBBPF_VER}/lib64/ -lbpf -lelf -lz
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# Link static version of libraries required by Teleport (bpf, pcsc) to reduce system dependencies. Avoid dependencies on dynamic libraries if we already link the static version using --as-needed.
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CGOFLAG = CGO_ENABLED=1 CGO_CFLAGS="-I/usr/libbpf-${LIBBPF_VER}/include" CGO_LDFLAGS="-Wl,-Bstatic $(STATIC_LIBS) -Wl,-Bdynamic -Wl,--as-needed"
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CGOFLAG_TSH = CGO_ENABLED=1 CGO_LDFLAGS="-Wl,-Bstatic $(STATIC_LIBS_TSH) -Wl,-Bdynamic -Wl,--as-needed"
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endif # bpf/bpf.h found
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endif # IS_NATIVE_BUILD == yes
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endif # ARCH == amd64 OR arm64
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endif # OS == linux
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