The build logic for tar.gz bundles cannot handle files containing $. For
the Oracle internal docs bundle, this is a problem since there are
example inner classes included. Escaping of $ is always a pain point
when working with make. After having investigated this quite thoroughly
I have found what I think is the best solution.
What happens here is something like this:
LIST_OF_FILES := $(some find expression creating a list of files)
$(eval $(call SomeMacro, FOO, \
FILES := $(LIST_OF_FILES), \
... \
))
If LIST_OF_FILES contains a file with a $, that $ will get eaten by the
$(eval). When we supply arguments to such macros inline, we currently
have to escape them two times like this (in order to get EXCLUDES to
contain foo$bar):
$(eval $(call SomeMacro, FOO, \
EXCLUDES := foo$$$$bar, \
... \
))
Because of this, I think the best solution is to modify the logic
evaluating the parameters for such macros, with a strategically placed
call to DoubleDollar to compensate for the extra evaluation of the
parameter values. Then the first example will just work and the second
becomes:
$(eval $(call SomeMacro, FOO, \
EXCLUDES := foo$$bar, \
... \
))
Bug: https://bugs.openjdk.java.net/browse/JDK-8160491
Webrev: http://cr.openjdk.java.net/~erikj/8160491/webrev.01/
/Erik
