[issue2233] Makefile.pre.in contains extra slash before $(DESTDIR) which can cause Cygwin build to fail

[Roumen Petrov]

Roumen Petrov <bugtrack at roumenpetrov.info> added the comment:

Hi Jason,
quick review without tests - I expect $${DESTDIR:-/} to work without :
in expression, i.e. just $${DESTDIR-/}.

The ":" in expression is not so portable (some shells fail on this).
Please see "Shell Substitutions" in autoconf manual.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue2233>
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