build an eCos library error

The ecc.demo is from ALTERA's reference_designs. Refrence_design did no use lan91c11,maybe a MAC ip-core. Now i don;t know how to do it .

Reading the ecos2.0doc will help!?

I found an ecos package and added it in ecos. Then i open it.(2006.12.6)

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1. cd c:/ecos/1c20

2. nios2configtool --ptf=..... --cpu=cpu

3. build -> generate build tree

4. build -> library

5. make INSTALL_DIR=1c20_install

or make INSTALL_DIR=c:/ecos/1c20/1c20_install

or make INSTALL_DIR=cygdrive/c/ecos/1c201c20_install

the same error is : make :***no targets specifed and no make file found,stop

how can generate a make file ?