It went without a problem. I have just used Make.inc/Makefile.gfortran.SEQ as Makefile.inc where I have changed the ordering to metis and then set BLAS to what was available.
Interestingly enough, that by default more DLLs are used:
$ cygcheck ./c_example.exe
C:\cygwin1.7\bin\cygwin1.dll
C:\WINDOWS\system32\ADVAPI32.DLL
C:\WINDOWS\system32\ntdll.dll
C:\WINDOWS\system32\KERNEL32.dll
C:\WINDOWS\system32\RPCRT4.dll
C:\WINDOWS\system32\Secur32.dll
C:\cygwin1.7\bin\cyggcc_s-1.dll
C:\cygwin1.7\bin\cyggfortran-3.dll
RSS