how to achieve conversion to uppercase

[Matej Kosik]

Hi,

I am trying to figure out how to convert words to upper case.

Make itself does not seem to have dedicated function for this particular task, 
unless I am mistaken, so I guess I had to rely on bash.

In bash, something like this:

  var=foo; echo ${var^}

works fine. I get:

  Foo

However, if I try to embed this command with my makefile like this:

  $(shell var=foo; echo $${var^})

then I get:

  /bin/sh: 1: Bad substitution

I am not sure what exactly that string expands to by make before it is passed 
to bash so I am not sure which escape characters are missing (if that is the 
problem).

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Thank you in advance for any help.