root@server9968:/home/ubuntu/tigercoin/src# make -f makefile.unix USE_UPNP=
Building LevelDB ...
/bin/sh: 1: ./build_detect_platform: Permission denied
make[1]: Entering directory `/home/ubuntu/tigercoin/src/leveldb'
Makefile:18: build_config.mk: No such file or directory
make[1]: *** No rule to make target `build_config.mk'.  Stop.
make[1]: Leaving directory `/home/ubuntu/tigercoin/src/leveldb'
make: *** [leveldb/libleveldb.a] Error 2