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dnl From http://autoconf-archive.cryp.to/ac_define_dir.html.
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##### http://autoconf-archive.cryp.to/ac_define_dir.html
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# AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION])
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# This macro sets VARNAME to the expansion of the DIR variable,
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# taking care of fixing up ${prefix} and such.
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# VARNAME is then offered as both an output variable and a C
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# preprocessor symbol.
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# AC_DEFINE_DIR([DATADIR], [datadir], [Where data are placed to.])
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# Copyright (c) 2006 Stepan Kasal <kasal@ucw.cz>
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# Copyright (c) 2006 Andreas Schwab <schwab@suse.de>
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# Copyright (c) 2006 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2006 Alexandre Oliva
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# Copying and distribution of this file, with or without
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# modification, are permitted in any medium without royalty provided
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# the copyright notice and this notice are preserved.
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AC_DEFUN([AC_DEFINE_DIR], [
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test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
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test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
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dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn
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dnl refers to ${prefix}. Thus we have to use `eval' twice.
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eval ac_define_dir="\"[$]$2\""
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eval ac_define_dir="\"$ac_define_dir\""
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AC_SUBST($1, "$ac_define_dir")
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AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3])
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test "$prefix_NONE" && prefix=NONE
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test "$exec_prefix_NONE" && exec_prefix=NONE
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acinclude.m4
