ci: Bump clang to clang-18

Author: peternose

.buildkite/code.pipeline.yml

@@ -254,7 +254,7 @@ steps:
       # Needed as the trust-root test rebuilds the enclave with embedded trust root data.
       - cargo install --locked --path tools
       - export CFLAGS_x86_64_fortanix_unknown_sgx="-isystem/usr/include/x86_64-linux-gnu -mlvi-hardening -mllvm -x86-experimental-lvi-inline-asm-hardening"
-      - export CC_x86_64_fortanix_unknown_sgx=clang-11
+      - export CC_x86_64_fortanix_unknown_sgx=clang-18
       # Only run runtime scenarios as others do not use SGX.
       - >
         .buildkite/scripts/test_e2e.sh --timeout 20m

.buildkite/rust/build_runtime.sh

@@ -58,7 +58,7 @@ pushd $src_dir
 
             # Build SGX runtime.
             export CFLAGS_x86_64_fortanix_unknown_sgx="-isystem/usr/include/x86_64-linux-gnu -mlvi-hardening -mllvm -x86-experimental-lvi-inline-asm-hardening"
-            export CC_x86_64_fortanix_unknown_sgx=clang-11
+            export CC_x86_64_fortanix_unknown_sgx=clang-18
             unset OASIS_UNSAFE_SKIP_KM_POLICY
             CARGO_TARGET_DIR="${CARGO_TARGET_DIR}/sgx" cargo build --release --locked --target x86_64-fortanix-unknown-sgx
             CARGO_TARGET_DIR="${CARGO_TARGET_DIR}/sgx" cargo elf2sgxs --release

Makefile

@@ -16,11 +16,12 @@ build-tools:
 	@$(ECHO) "$(MAGENTA)*** Building Rust tools...$(OFF)"
 	@CARGO_TARGET_DIR=target/default cargo install --locked --path tools
 
-# NOTE: We explictly set CARGO_TARGET_DIR as a workaround to avoid
+# NOTE: We explicitly set CARGO_TARGET_DIR as a workaround to avoid
 #       recompilations in newer cargo nightly builds.
 #       See https://github.com/oasisprotocol/oasis-core/pull/2673 for details.
 build-runtimes:
-	@CARGO_TARGET_ROOT=$(shell pwd)/target && for e in $(RUNTIMES); do \
+	@export CC_x86_64_fortanix_unknown_sgx=clang-18 && \
+	CARGO_TARGET_ROOT=$(shell pwd)/target && for e in $(RUNTIMES); do \
 		$(ECHO) "$(MAGENTA)*** Building runtime: $$e...$(OFF)"; \
 		(cd $$e && \
 			CARGO_TARGET_DIR=$${CARGO_TARGET_ROOT}/sgx cargo build --release --target x86_64-fortanix-unknown-sgx && \

docker/oasis-core-dev/Dockerfile

@@ -20,7 +20,7 @@ ARG LEGACY_GO_VERSION=1.20.2
 ARG DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update -qq && apt-get upgrade -qq && apt-get install -qq \
-    build-essential git gdb cmake clang-11 gcc-multilib \
+    build-essential git gdb cmake clang-18 gcc-multilib \
     curl wget unzip \
     pkg-config software-properties-common \
     python3 python3-pyelftools \