What do you want to make exactly?  here we speak off a Wallet to old coin's.  Where the code is already written.  This tuto is only the compiling stage
if you would want to do this, you first will need to find a QT wallet for BTC, and then follow true this tuto.  But my guess would be that they have their own
tutorial to guide you true.

Does anyone have a solution for this error?

make[1]: Entering directory '/mnt/coinm/src/leveldb'
make[1]: 'libleveldb.a' is up to date.
make[1]: 'libmemenv.a' is up to date.
make[1]: Leaving directory '/mnt/coinm/src/leveldb'
/bin/sh: 1: i686-w64-mingw32.static-ranlib: not found
Makefile.Release:454: recipe for target '/mnt/coinm/src/leveldb/libleveldb.a' failed
make: *** [/mnt/coinm/src/leveldb/libleveldb.a] Error 127

I have tried several tips but nothing seems to work.  I did notice the question has been post before but no solution to be found in reply.

[edit] I found a solution: that got me over the error mentioned above.  Now I am
the happy owner of a dozen other errors 

what is the solution to this issue?  I can't seem to find the answer around here.  I tried finding how to install this missing i686-w64-mingw32.static-ranlib but no luck finding how to do that.  So I redid the whole tutorial just in case I would have missed something but no luck their either.  can you point me in the right direction?