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Backport b95f969b03c79d
authorH.Merijn Brand - Tux <h.m.brand@xs4all.nl>
Sat, 9 Mar 2013 19:34:43 +0000 (20:34 +0100)
committerH.Merijn Brand - Tux <h.m.brand@xs4all.nl>
Sat, 9 Mar 2013 19:34:43 +0000 (20:34 +0100)
commitba83d71f59c0eb0651ef984c0c1ec4e362015431
treeed0de1602684809365ac1fea784c1d34e858b16a
parent6d41512cec5feb97e6f254aef3161445f44c0653
Backport b95f969b03c79d

Configure: bail out when neither stdarg.h nor varargs.h

Perl uses variadic functions, so we need at least one of the relevant
mechanisms available; for this reason, the CompCert C compiler is unsuitable
for our purposes.

If the person building Perl wants to carry on regardless, they can use the
"-K" option.

This partly addresses RT#112494.
U/modified/i_varhdr.U