40 lines
1.3 KiB
Bash
40 lines
1.3 KiB
Bash
#
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# Configures the BPF SDK environment
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#
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if [ -z "$bpf_sdk" ]; then
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bpf_sdk=.
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fi
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# Ensure the sdk is installed
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"$bpf_sdk"/scripts/install.sh
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# Use the SDK's version of llvm to build the compiler-builtins for BPF
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export CC="$bpf_sdk/dependencies/bpf-tools/llvm/bin/clang"
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export AR="$bpf_sdk/dependencies/bpf-tools/llvm/bin/llvm-ar"
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export OBJDUMP="$bpf_sdk/dependencies/bpf-tools/llvm/bin/llvm-objdump"
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export OBJCOPY="$bpf_sdk/dependencies/bpf-tools/llvm/bin/llvm-objcopy"
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# Use the SDK's version of Rust to build for BPF
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export RUSTUP_TOOLCHAIN=bpf
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export RUSTFLAGS="
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-C lto=no \
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-C opt-level=2 \
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-C link-arg=-z -C link-arg=notext \
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-C link-arg=-T$bpf_sdk/rust/bpf.ld \
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-C link-arg=--Bdynamic \
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-C link-arg=-shared \
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-C link-arg=--threads=1 \
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-C link-arg=--entry=entrypoint \
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-C linker=$bpf_sdk/dependencies/bpf-tools/llvm/bin/ld.lld"
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# CARGO may be set if run from within cargo, causing
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# incompatibilities between cargo and xargo versions
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unset CARGO
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export XARGO="$bpf_sdk"/dependencies/bin/xargo
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export XARGO_TARGET=bpfel-unknown-unknown
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export XARGO_HOME="$bpf_sdk/dependencies/xargo"
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export XARGO_RUST_SRC="$bpf_sdk/dependencies/rust-bpf-sysroot/src"
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export RUST_COMPILER_RT_ROOT="$bpf_sdk/dependencies/rust-bpf-sysroot/src/compiler-rt"
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