annotate m4/ac_define_dir.m4 @ 368:6d30cd0d0bef stable-0-6-69

prep for fedora build
author Carl Byington <carl@five-ten-sg.com>
date Sat, 29 Oct 2016 17:30:51 -0700
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1 # ===========================================================================
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2 # http://autoconf-archive.cryp.to/ac_define_dir.html
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3 # ===========================================================================
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4 #
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5 # SYNOPSIS
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6 #
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7 # AC_DEFINE_DIR(VARNAME, DIR [, DESCRIPTION])
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8 #
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9 # DESCRIPTION
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10 #
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11 # This macro sets VARNAME to the expansion of the DIR variable, taking
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12 # care of fixing up ${prefix} and such.
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13 #
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14 # VARNAME is then offered as both an output variable and a C preprocessor
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15 # symbol.
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16 #
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17 # Example:
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18 #
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19 # AC_DEFINE_DIR([DATADIR], [datadir], [Where data are placed to.])
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20 #
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21 # LAST MODIFICATION
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22 #
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23 # 2008-04-12
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24 #
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25 # COPYLEFT
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26 #
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27 # Copyright (c) 2008 Stepan Kasal <kasal@ucw.cz>
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28 # Copyright (c) 2008 Andreas Schwab <schwab@suse.de>
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29 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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30 # Copyright (c) 2008 Alexandre Oliva
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31 #
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32 # Copying and distribution of this file, with or without modification, are
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33 # permitted in any medium without royalty provided the copyright notice
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34 # and this notice are preserved.
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35
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36 AC_DEFUN([AC_DEFINE_DIR], [
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37 prefix_NONE=
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38 exec_prefix_NONE=
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39 test "x$prefix" = xNONE && prefix_NONE=yes && prefix=$ac_default_prefix
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40 test "x$exec_prefix" = xNONE && exec_prefix_NONE=yes && exec_prefix=$prefix
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41 dnl In Autoconf 2.60, ${datadir} refers to ${datarootdir}, which in turn
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42 dnl refers to ${prefix}. Thus we have to use `eval' twice.
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43 eval ac_define_dir="\"[$]$2\""
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44 eval ac_define_dir="\"$ac_define_dir\""
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45 AC_SUBST($1, "$ac_define_dir")
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46 AC_DEFINE_UNQUOTED($1, "$ac_define_dir", [$3])
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47 test "$prefix_NONE" && prefix=NONE
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48 test "$exec_prefix_NONE" && exec_prefix=NONE
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49 ])