[PATCH] autogen: fix definition of MAXPATHLEN

[Pino Toscano]

Hi,

attached there is a patch for autogen to fix the definition of
MAXPATHLEN when not defined already (either not directly or because
PATH_MAX is not defined either).

This caused a build failure in sharutils (which embeds the libopts part
of autogen) on GNU/Hurd (which provides no PATH_MAX nor MAXPATHLEN) [1].
This happens because in autogen's autoopts.h there is:
#  if defined(PATH_MAX) && (PATH_MAX > MAXPATHLEN)
which triggers a preprocessor parsing error when MAXPATHLEN is defined
as (size_t)4096.

[1] 
https://buildd.debian.org/status/fetch.php?pkg=sharutils&arch=hurd-i386&ver=1%3A4.13.5-1&stamp=1381663210

Thanks,
-- 
Pino Toscano

0001-Fix-definition-of-MAXPATHLEN.patch
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