Can't compile mintty-3.5.0

[Lemures Lemniscati]

Hi!

I tried to compile mintty-3.5.0,
but failed with the message:

windres -c 65001 --preprocessor 'gcc -E -xc -DRC_INVOKED -MMD -MP -DTARGET=x86_64-pc-cygwin -DNDEBUG' res.rc ../bin/cygwin64/res.o
/bin/sh: gcc -E -xc -DRC_INVOKED -MMD -MP -DTARGET=x86_64-pc-cygwin -DNDEBUG: command not found
windres: preprocessing failed.


====
How to reproduce

With source from https://github.com/mintty/mintty at tag: 3.5.0,
running

    make

failed at the point above.
.
With mintty-3.5.0-1.cygport,
running

    cygport mintty-3.5.0-1.cygport all

failed at the same point.


====
I've installed these packages as described in a file 'INSTALL'.
What is still necessary for successful build ?

----
$ uname -svrmo; cygcheck -c gcc-core make
CYGWIN_NT-10.0 3.2.0(0.340/5/3) 2021-03-29 08:42 x86_64 Cygwin
Cygwin Package Information
Package              Version        Status
gcc-core             10.2.0-1       OK
make                 4.3-1          OK
----


Regards,

Lem