plugin/libplugin: API for C plugins.

Doesn't do logging yet.

Signed-off-by: Rusty Russell <[email protected]>

Makefile

@@ -216,6 +216,7 @@ include lightningd/Makefile
 include cli/Makefile
 include doc/Makefile
 include devtools/Makefile
+include plugins/Makefile
 
 # Git doesn't maintain timestamps, so we only regen if git says we should.
 CHANGED_FROM_GIT = [ x"`git log $@ | head -n1`" != x"`git log $< | head -n1`" -o x"`git diff $<`" != x"" ]

common/daemon.c

@@ -152,10 +152,10 @@ void daemon_shutdown(void)
 	wally_cleanup(0);
 }
 
-void daemon_maybe_debug(int argc, char *argv[])
+void daemon_maybe_debug(char *argv[])
 {
 #if DEVELOPER
-	for (int i = 1; i < argc; i++) {
+	for (int i = 1; argv[i]; i++) {
 		if (!streq(argv[i], "--debugger"))
 			continue;
 

common/daemon.h

@@ -15,7 +15,7 @@ int daemon_poll(struct pollfd *fds, nfds_t nfds, int timeout);
 void daemon_shutdown(void);
 
 /* Kick in a debugger if they set --debugger */
-void daemon_maybe_debug(int argc, char *argv[]);
+void daemon_maybe_debug(char *argv[]);
 
 struct backtrace_state *backtrace_state;
 

common/subdaemon.c

@@ -37,7 +37,7 @@ void subdaemon_setup(int argc, char *argv[])
 			logging_io = true;
 	}
 
-	daemon_maybe_debug(argc, argv);
+	daemon_maybe_debug(argv);
 
 #if DEVELOPER
 	for (int i = 1; i < argc; i++) {

plugins/Makefile

@@ -0,0 +1,37 @@
+PLUGIN_LIB_SRC := plugins/libplugin.c
+PLUGIN_LIB_HEADER := plugins/libplugin.h
+PLUGIN_LIB_OBJS := $(PLUGIN_LIB_SRC:.c=.o)
+
+PLUGIN_COMMON_OBJS :=				\
+	bitcoin/chainparams.o			\
+	bitcoin/pubkey.o			\
+	bitcoin/pullpush.o			\
+	bitcoin/script.o			\
+	bitcoin/shadouble.o			\
+	bitcoin/short_channel_id.o		\
+	bitcoin/signature.o			\
+	bitcoin/tx.o				\
+	bitcoin/varint.o			\
+	common/bech32.o				\
+	common/bech32_util.o			\
+	common/bolt11.o				\
+	common/daemon.o				\
+	common/hash_u5.o			\
+	common/json.o				\
+	common/json_escaped.o			\
+	common/json_tok.o			\
+	common/memleak.o			\
+	common/param.o				\
+	common/type_to_string.o			\
+	common/utils.o				\
+	common/version.o			\
+	wire/fromwire.o				\
+	wire/towire.o
+
+# Make sure these depend on everything.
+ALL_OBJS += $(PLUGIN_LIB_OBJS)
+
+clean: plugin-clean
+
+plugin-clean:
+	$(RM) $(PLUGIN_LIB_OBJS)