Christophe CURIS be1c2a01dc configure: require a minimum version for Autoconf to avoid wrong generation ...

As found by Douglas Torrance, when the 'configure' script is generated
using v2.68 of autoconf then it gets wrongly generated due to a regression
in the handling of names in AS_VAR_PUSHDEF, and crashes with this kind of
sibylline messages:

checking CFLAGS for -Wtrampolines... ./configure: line 11916: wm_cv_c_check_compopt_Werror_trampolines=no, unknown: command not found

This patch adds a check on autoconf version to ensure the problem will get
caught as soon as possible.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

2014-12-15 20:24:22 +00:00

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