tools/llvm-bpf: add llvm+clang build suitable for compiling code to eBPF

Preparation for building packages that ship eBPF code

Signed-off-by: Felix Fietkau <nbd@nbd.name>

toolchain/Config.in

@@ -37,6 +37,13 @@ menuconfig TARGET_OPTIONS
 
 		  Most people will answer N.
 
+config BUILD_LLVM_BPF
+	bool "Build LLVM toolchain for eBPF" if DEVEL
+	help
+	  If enabled, a LLVM toolchain for building eBPF binaries will be built.
+	  If this is not enabled, eBPF packages can only be built if the host
+	  has a suitable toolchain
+
 
 menuconfig EXTERNAL_TOOLCHAIN
 	bool