Add missing headers and remove double typedef.

src/command.c

@@ -38,8 +38,6 @@
 #	include "traceswo.h"
 #endif
 
-typedef bool (*cmd_handler)(target *t, int argc, const char **argv);
-
 static bool cmd_version(target *t, int argc, char **argv);
 static bool cmd_help(target *t, int argc, char **argv);
 

src/platforms/hosted/jlink_jtagtap.c

@@ -24,7 +24,7 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <string.h>
-
+#include <alloca.h>
 #include <assert.h>
 
 #include "general.h"

src/platforms/pc/serial_unix.c

@@ -19,6 +19,7 @@
  */
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/select.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <errno.h>