makes which break with `silent-rules'

[Bob Friesenhahn]

Is anyone aware of specific vendor make programs which fail with 
automake 1.11's new `silent-rules' option?

"  - The `silent-rules' option enables Linux kernel-style silent build output.
    This option requires the widely supported but non-POSIX `make' feature
    of recursive variable expansion, so do not use it if your package needs
    to build with `make' implementations that do not support it."

Does "widely supported" mean "virtually everywhere" or are there some 
platforms providing a 'make' which won't work?

Thanks,

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/