let users choose install PREFIX, removed some warning

Makefile

@@ -4,9 +4,11 @@ PKGS = fuse libxml-2.0 libcurl libapp libjson
 FLAGS = $(shell pkg-config ${PKGS} --cflags) -g ${CFLAGS}
 LIBS = $(shell pkg-config ${PKGS} --libs) -lpthread
 OBJS = boxfs.o boxapi.o boxpath.o boxhttp.o boxopts.o boxjson.o boxcache.o boxutils.o
-PREFIX = /usr/local
+PREFIX ?= /usr/local
 BINDIR = $(PREFIX)/bin
 
+.PHONY: clean install check_pkg
+
 # Targets
 boxfs:  check_pkg $(OBJS) 
 	@echo "Building  $@"
@@ -16,8 +18,6 @@ boxfs:  check_pkg $(OBJS)
 	@echo Compiling $<
 	$(CC) $(FLAGS) -c $< -o $@
 
-.PHONY: clean install check_pkg
-
 clean:
 	rm -f $(OBJS) *~ boxfs
 

boxapi.c

@@ -500,11 +500,16 @@ int api_removefile(const char * path)
 	}
 
 	boxpath_free(bpath);
-	//get_account_info();
 	return res;
 }
 
-//Move and rename funcs, new version
+/*
+ * Move and rename funcs, new version
+ */
+
+//predeclaration
+int do_api_move_id(int is_dir, const char * id, const char * dest, int is_rename);
+
 int do_api_move(boxpath * bsrc, boxpath * bdst)
 {
 	int res = 0;

boxcache.c

@@ -4,6 +4,8 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
 
 static char *cache_dir = NULL;
 static time_t expire = 0;

boxcache.h

@@ -8,4 +8,4 @@ void   cache_put(const char * key, const char * val);
 void   cache_rm(const char * key);
 
 #endif
-//BOXCACHE_H
+//BOXCACHE_H

boxjson.c

@@ -127,7 +127,7 @@ void jobj_free(jobj * obj)
 {
 	list_iter it;
 
-	if(obj->type = T_VAL) {
+	if(obj->type == T_VAL) {
 		free(obj->value);
 		return;
 	}

boxopts.c

@@ -9,6 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <fuse.h>
+#include <unistd.h>
 
 char* args[] = { "boxfs", "-h" };
 /*

boxutils.h

@@ -17,4 +17,4 @@ off_t   filesize(const char * localpath);
 char *  pathappend(const char * one, const char * two);      
 
 #endif
-//BOXUTILS_H
+//BOXUTILS_H