There is a mistake in my « makefile »

I am a beginner, in vim. Something is wrong in my makefile. At the end of my shell, when I type :make it works well. All my shell is compiled. But no trace of the object file, named essai.o
My source file is essai. Somewhere « make » or « /bin/bash » says to me : cyclic permutation is no correct. That is something I don't understand.
I should like to save my object file. Shall I use « sudo make install » or « sudo essai.o install » ? ?
For installing must I use commands put inside the makefile or am I forced to do that in second time, out of my makefile ? ? Here is my makefile :
# indiquer quel compilateur utiliser
#!/bin/bash
#makefile
all: essai.o
essai.o: essai
/bin/bash essai -o essai.o
My OS is : xubuntu 14.4.1 My vim version is 7.4. 52 My PC is hp Mini 110 1100
THANKS A LOT TO ALL MY REPLIERS

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