I've been using this thunk implementation as described
http://www.cakoose.com/wiki/gnu_make_thunks, but recently came upon an
anomaly on a different operating system. Here's an example Makefile:
A = abcdefghijklmnop
B = $(eval B := $A)$B
test:
@echo [$B]
@echo [$B]
On cygwin it seems to work fine:
[abcdefghijklmnopqr]
[abcdefghijklmnopqr]
But on Mac 10.6 as well as Ubuntu 12.04, it returns:
[p]
[abcdefghijklmnop]
All of these environments are running make 3.82.
The length of the definitions of A and B matter, too. Basically the first
expansion of $B truncates as many characters as the $(eval ...) definition
is long. Very strange.
Am I missing something?
--
Victor Shih
blog.vicshih.com
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