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diff --git a/Build/source/texk/web2c/luatexdir/zziplib/m4/ax_expand_prefix.m4 b/Build/source/texk/web2c/luatexdir/zziplib/m4/ax_expand_prefix.m4
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-dnl @synopsis AX_EXPAND_PREFIX
-dnl
-dnl when $prefix and $exec_prefix are still set to NONE then set them
-dnl to the usual default values - being based on $ac_default_prefix. -
-dnl this macro can be AC_REQUIREd by other macros that need to compute
-dnl values for installation directories. It has been observed that it
-dnl was done wrong over and over again, so this is a bit more safe to
-dnl do.
-dnl
-dnl remember - setting exec_prefix='${prefix}' needs you interpolate
-dnl directories multiple times, it is not sufficient to just say
-dnl MYVAR="${datadir}/putter" but you do have to run `eval` a few
-dnl times, sth. like MYVAR=`eval "echo \"$MYVAR\""` done atleast two
-dnl times.
-dnl
-dnl The implementation of this macro simply picks up the lines that
-dnl would be run at the start of AC_OUTPUT anyway to set the
-dnl prefix/exec_prefix defaults. Between AC_INIT and the first command
-dnl to AC_REQUIRE this macro you can set the two variables to something
-dnl explicit instead. Probably, any command to compute installation
-dnl directories should be run _after_ AM_INIT_AUTOMAKE
-dnl
-dnl @category Misc
-dnl @author Guido Draheim <guidod@gmx.de>
-dnl @version 2005-01-21
-dnl @license GPLWithACException
-
-AC_DEFUN([AX_EXPAND_PREFIX],[dnl
- # The prefix default can be set in configure.ac (otherwise it is /usr/local)
- test "x$prefix" = xNONE && prefix=$ac_default_prefix
- # Let make expand exec_prefix. Allows to override the makevar 'prefix' later
- test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
-])