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chore: fix RISC-V guest build on macOS 26

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Add .cargo/config.toml setting CFLAGS_riscv32im_risc0_zkvm_elf to
"-march=rv32im -nostdlib". This prevents cc-rs from injecting
macOS-specific flags (-arch arm64, -mmacosx-version-min) into the
riscv32-unknown-elf-gcc cross-compiler when building C dependencies
(e.g. ring) for the guest target, which causes build failures on
macOS 26 Tahoe.
This commit is contained in:
r4bbit 2026-04-29 09:45:53 +02:00
parent a3bdc964c7
commit 06a141ef6e
1 changed files with 5 additions and 0 deletions
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.cargo/config.toml Normal file
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[env]
# Prevent cc-rs from injecting macOS-specific flags (e.g. -arch arm64, -mmacosx-version-min)
# into the RISC-V cross-compiler when building C dependencies (e.g. ring) for the guest target.
# Without this, builds fail on macOS 26+ with the risc0 C++ toolchain.
CFLAGS_riscv32im_risc0_zkvm_elf = "-march=rv32im -nostdlib"