cln-rpc: Update the Makefile to always rebuild each example when the …

…example files themselves are changed

and to rebuild all the examples when the dependencies are changed (`CLN_RPC_SOURCES`).

cln-rpc/Makefile

@@ -8,13 +8,13 @@ DEFAULT_TARGETS += $(CLN_RPC_EXAMPLES) $(CLN_RPC_GENALL)
 
 MSGGEN_GENALL += $(CLN_RPC_GENALL)
 
-target/${RUST_PROFILE}/examples/cln-rpc-getinfo: $(shell find cln-rpc -name *.rs)
+target/${RUST_PROFILE}/examples/cln-rpc-getinfo: ${CLN_RPC_SOURCES} cln-rpc/examples/getinfo.rs
 	cargo build ${CARGO_OPTS} --example cln-rpc-getinfo
 
-target/${RUST_PROFILE}/examples/cln-plugin-startup: plugins/examples/cln-plugin-startup.rs
+target/${RUST_PROFILE}/examples/cln-plugin-startup: ${CLN_RPC_SOURCES} plugins/examples/cln-plugin-startup.rs
 	cargo build ${CARGO_OPTS} --example cln-plugin-startup
 
-target/${RUST_PROFILE}/examples/cln-plugin-reentrant: plugins/examples/cln-plugin-reentrant.rs
+target/${RUST_PROFILE}/examples/cln-plugin-reentrant: ${CLN_RPC_SOURCES} plugins/examples/cln-plugin-reentrant.rs
 	cargo build ${CARGO_OPTS} --example cln-plugin-reentrant