fix(ci): Install clang-14 for cross-compilation

The default cross Docker images use Ubuntu 20.04 with clang-10, but
bindgen 0.72+ requires clang 11+ (uses clang_Type_getValueType which
was added in clang 11).

Install clang-14 from LLVM apt repository and set LIBCLANG_PATH and
LLVM_CONFIG_PATH environment variables for all Linux targets.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: pepicrft

Cross.toml

@@ -4,65 +4,84 @@
 # IMPORTANT: Cross-compilation runs ON x86_64 hosts, so protoc must be x86_64
 # even when cross-compiling FOR ARM targets. Protoc runs during build.rs,
 # which executes on the host, not the target architecture.
+#
+# NOTE: We install clang-14 because bindgen 0.72+ requires clang 11+
+# (uses clang_Type_getValueType which was added in clang 11).
+# The default cross images have clang 10 which is too old.
 
 [build.env]
-passthrough = ["PROTOC"]
+passthrough = ["PROTOC", "LIBCLANG_PATH", "LLVM_CONFIG_PATH"]
 
 # All targets use x86_64 protoc because cross builds run on x86_64 hosts
 [target.x86_64-unknown-linux-gnu]
 pre-build = [
-    "apt-get update && apt-get install -y curl unzip",
+    "apt-get update && apt-get install -y curl unzip wget gnupg software-properties-common",
+    "wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -",
+    "add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main'",
+    "apt-get update && apt-get install -y clang-14 libclang-14-dev",
+    "ln -sf /usr/bin/clang-14 /usr/bin/clang",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
     "chmod +x /usr/local/bin/protoc",
     "rm protoc-28.3-linux-x86_64.zip",
 ]
 
+[target.x86_64-unknown-linux-gnu.env]
+LIBCLANG_PATH = "/usr/lib/llvm-14/lib"
+LLVM_CONFIG_PATH = "/usr/bin/llvm-config-14"
+
 [target.x86_64-unknown-linux-musl]
-# libclang-dev is required for librocksdb-sys build script
 pre-build = [
-    "apt-get update && apt-get install -y curl unzip libclang-dev",
+    "apt-get update && apt-get install -y curl unzip wget gnupg software-properties-common",
+    "wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -",
+    "add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main'",
+    "apt-get update && apt-get install -y clang-14 libclang-14-dev",
+    "ln -sf /usr/bin/clang-14 /usr/bin/clang",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
     "chmod +x /usr/local/bin/protoc",
     "rm protoc-28.3-linux-x86_64.zip",
 ]
 
+[target.x86_64-unknown-linux-musl.env]
+LIBCLANG_PATH = "/usr/lib/llvm-14/lib"
+LLVM_CONFIG_PATH = "/usr/bin/llvm-config-14"
+
 [target.aarch64-unknown-linux-gnu]
 pre-build = [
-    "apt-get update && apt-get install -y curl unzip",
+    "apt-get update && apt-get install -y curl unzip wget gnupg software-properties-common",
+    "wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -",
+    "add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main'",
+    "apt-get update && apt-get install -y clang-14 libclang-14-dev",
+    "ln -sf /usr/bin/clang-14 /usr/bin/clang",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
     "chmod +x /usr/local/bin/protoc",
     "rm protoc-28.3-linux-x86_64.zip",
 ]
 
+[target.aarch64-unknown-linux-gnu.env]
+LIBCLANG_PATH = "/usr/lib/llvm-14/lib"
+LLVM_CONFIG_PATH = "/usr/bin/llvm-config-14"
+
 [target.aarch64-unknown-linux-musl]
-# libclang-dev is required for librocksdb-sys build script
 pre-build = [
-    "apt-get update && apt-get install -y curl unzip libclang-dev",
+    "apt-get update && apt-get install -y curl unzip wget gnupg software-properties-common",
+    "wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -",
+    "add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-14 main'",
+    "apt-get update && apt-get install -y clang-14 libclang-14-dev",
+    "ln -sf /usr/bin/clang-14 /usr/bin/clang",
     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
     "chmod +x /usr/local/bin/protoc",
     "rm protoc-28.3-linux-x86_64.zip",
 ]
 
+[target.aarch64-unknown-linux-musl.env]
+LIBCLANG_PATH = "/usr/lib/llvm-14/lib"
+LLVM_CONFIG_PATH = "/usr/bin/llvm-config-14"
+
 # ARMv7 targets are disabled because rquickjs doesn't have pre-built bindings for them
 # Uncomment when/if rquickjs adds armv7 support
 # [target.armv7-unknown-linux-gnueabihf]
-# pre-build = [
-#     "apt-get update && apt-get install -y curl unzip libclang-dev",
-#     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
-#     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
-#     "chmod +x /usr/local/bin/protoc",
-#     "rm protoc-28.3-linux-x86_64.zip",
-# ]
-
 # [target.armv7-unknown-linux-musleabihf]
-# pre-build = [
-#     "apt-get update && apt-get install -y curl unzip libclang-dev",
-#     "curl -LO https://github.com/protocolbuffers/protobuf/releases/download/v28.3/protoc-28.3-linux-x86_64.zip",
-#     "unzip protoc-28.3-linux-x86_64.zip -d /usr/local",
-#     "chmod +x /usr/local/bin/protoc",
-#     "rm protoc-28.3-linux-x86_64.zip",
-# ]