Strange build behavior - can't find basic cygwin utilities

[vladislav karnaukhov]

Hello,

I'm experiencing some strange build behavior under cygwin on Windows 7 
64-bit. I cloned jdk8 ws and ran configure - no issues. Please see 
configure log attached.

But when I try to start a build, I get a following error:

$ make all
make: mkdir: Command not found
make: *** 
[/cygdrive/c/projects/jdk8/build/windows-x86-normal-server-release/source_tips] 
Error 127

or

$ make clean
Cleaning langtools build artifacts ... done
Cleaning corba build artifacts ... done
...
make: echo: Command not found
make: *** [clean] Error 127

Both mkdir and echo (and other tools) are available from /usr/bin/ 
(/cygdrive/c/cygwin/bin) and I can run them as usual just by typing a 
name. I suspect that somewhere some paths weren't set correctly, but I 
was unable to resolve this.

Could someone help please?

Regards,
- Vlad