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From: Eric Blake
Subject: Re: RECENT AUTOCONF 2.62
Date: Tue, 15 Jul 2008 17:53:24 -0600
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[Please send mails to an appropriate list, rather than a single developer]

According to Takis Psarogiannakopoulos on 7/15/2008 12:48 PM:
| Hi there,
| This may sound a bit naive but I am at a loss with the new autoconf
| 2.62 scrips. First of all trying say to get 2.62 to work we are running to
| the issue that loads of packages are compiled with previous versions
(say 2.60
| etc etc) So is 2.62 backwards compatible?
| IT SHOULD BE otherwise whats the point if the whole config needs to be
| changed every time!

You are correct that 2.62 is supposed to be backwards compatible (but read
the NEWS file for details); in places where it is not, but where NEWS is
silent, then please report that as a bug.  There have already been some
known regressions reported, such as with AC_C_BIGENDIAN,
AC_USE_SYSTEM_EXTENSIONS, and AC_CONFIG_FILES($var_containing_newline),
that we hope to have repaired for 2.63.

| Also I am trying to modify the new automake 1.10.1 and find that
| whenever I want to add say a AC_CHECK_HEADER([sys/sem.h]) inside its
| configure.ac the autoconf 2.62 generates
| an error about _AM_DEPENDENSIES(CC) ? What is this all about?

Please post a sample configure.ac that reproduces this error.

| I would be greatful if you could enlighten me on these, I want to make a
| GNU toolkit for EMC's SMP Unix and used to know very well autoconf,
| automake, libtool. Now I cannot even add a simple AC_PROG_CC on
| automake's configure.ac without getting the _AM_DEPENDENCIES error and
| something about m4_pattern_allow?
| Regards,

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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