base: Switch to distro-provided LLVM/Clang packages

The LLVM APT repository does not provide i386 packages and this leads to
package version conflicts when an i386 package pulls the `libllvm` package
as a dependency (refer to the issue #269 for more details).

Since Ubuntu 24.04 provides the LLVM/Clang 20 packages, use those to avoid
package version conflicts.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

Author: stephanosio

Dockerfile.base

@@ -158,10 +158,16 @@ RUN <<EOF
 	fi
 
 	# Install LLVM and Clang
-	wget ${WGET_ARGS} https://apt.llvm.org/llvm.sh
-	chmod +x llvm.sh
-	./llvm.sh ${LLVM_VERSION} all
-	rm -f llvm.sh
+	apt-get install --no-install-recommends -y \
+		clang-${LLVM_VERSION} \
+		clang-format-${LLVM_VERSION} \
+		clang-tidy-${LLVM_VERSION} \
+		clang-tools-${LLVM_VERSION} \
+		clangd-${LLVM_VERSION} \
+		libc++-${LLVM_VERSION}-dev \
+		lld-${LLVM_VERSION} \
+		lldb-${LLVM_VERSION} \
+		llvm-${LLVM_VERSION}
 
 	# Install Python 3.9 for FVP
 	add-apt-repository -y ppa:deadsnakes/ppa