| 1 | # This file is part of Autoconf. -*- Autoconf -*-
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| 2 | # Interface with autoheader.
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| 3 |
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| 4 | # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
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| 5 | # 2002 Free Software Foundation, Inc.
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| 6 |
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| 7 | # This program is free software; you can redistribute it and/or modify
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| 8 | # it under the terms of the GNU General Public License as published by
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| 9 | # the Free Software Foundation; either version 2, or (at your option)
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| 10 | # any later version.
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| 11 | #
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| 12 | # This program is distributed in the hope that it will be useful,
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | # GNU General Public License for more details.
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| 16 | #
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| 17 | # You should have received a copy of the GNU General Public License
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| 18 | # along with this program; if not, write to the Free Software
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| 19 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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| 20 | # 02110-1301, USA.
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| 21 |
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| 22 | # As a special exception, the Free Software Foundation gives unlimited
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| 23 | # permission to copy, distribute and modify the configure scripts that
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| 24 | # are the output of Autoconf. You need not follow the terms of the GNU
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| 25 | # General Public License when using or distributing such scripts, even
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| 26 | # though portions of the text of Autoconf appear in them. The GNU
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| 27 | # General Public License (GPL) does govern all other use of the material
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| 28 | # that constitutes the Autoconf program.
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| 29 | #
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| 30 | # Certain portions of the Autoconf source text are designed to be copied
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| 31 | # (in certain cases, depending on the input) into the output of
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| 32 | # Autoconf. We call these the "data" portions. The rest of the Autoconf
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| 33 | # source text consists of comments plus executable code that decides which
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| 34 | # of the data portions to output in any given case. We call these
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| 35 | # comments and executable code the "non-data" portions. Autoconf never
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| 36 | # copies any of the non-data portions into its output.
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| 37 | #
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| 38 | # This special exception to the GPL applies to versions of Autoconf
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| 39 | # released by the Free Software Foundation. When you make and
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| 40 | # distribute a modified version of Autoconf, you may extend this special
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| 41 | # exception to the GPL to apply to your modified version as well, *unless*
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| 42 | # your modified version has the potential to copy into its output some
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| 43 | # of the text that was the non-data portion of the version that you started
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| 44 | # with. (In other words, unless your change moves or copies text from
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| 45 | # the non-data portions to the data portions.) If your modification has
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| 46 | # such potential, you must delete any notice of this special exception
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| 47 | # to the GPL from your modified version.
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| 48 | #
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| 49 | # Written by David MacKenzie, with help from
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| 50 | # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
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| 51 | # Roland McGrath, Noah Friedman, david d zuhn, and many others.
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| 52 |
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| 53 |
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| 54 | # AH_OUTPUT(KEY, TEXT)
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| 55 | # --------------------
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| 56 | # Pass TEXT to autoheader.
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| 57 | # This macro is `read' only via `autoconf --trace', it outputs nothing.
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| 58 | m4_define([AH_OUTPUT], [])
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| 59 |
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| 60 |
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| 61 | # AH_VERBATIM(KEY, TEMPLATE)
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| 62 | # --------------------------
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| 63 | # If KEY is direct (i.e., no indirection such as in KEY=$my_func which
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| 64 | # may occur if there is AC_CHECK_FUNCS($my_func)), issue an autoheader
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| 65 | # TEMPLATE associated to the KEY. Otherwise, do nothing. TEMPLATE is
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| 66 | # output as is, with no formatting.
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| 67 | #
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| 68 | # Quote for Perl '' strings, which are those used by Autoheader.
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| 69 | m4_define([AH_VERBATIM],
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| 70 | [AS_LITERAL_IF([$1],
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| 71 | [AH_OUTPUT([$1], AS_ESCAPE([[$2]], [\\'']))])
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| 72 | ])
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| 73 |
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| 74 |
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| 75 | # AH_TEMPLATE(KEY, DESCRIPTION)
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| 76 | # -----------------------------
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| 77 | # Issue an autoheader template for KEY, i.e., a comment composed of
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| 78 | # DESCRIPTION (properly wrapped), and then #undef KEY.
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| 79 | m4_define([AH_TEMPLATE],
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| 80 | [AH_VERBATIM([$1],
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| 81 | m4_text_wrap([$2 */], [ ], [/* ])[
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| 82 | #undef $1])])
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| 83 |
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| 84 |
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| 85 | # AH_TOP(TEXT)
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| 86 | # ------------
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| 87 | # Output TEXT at the top of `config.h.in'.
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| 88 | m4_define([AH_TOP],
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| 89 | [m4_define([_AH_COUNTER], m4_incr(_AH_COUNTER))dnl
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| 90 | AH_VERBATIM([0000]_AH_COUNTER, [$1])])
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| 91 |
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| 92 |
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| 93 | # AH_BOTTOM(TEXT)
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| 94 | # ---------------
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| 95 | # Output TEXT at the bottom of `config.h.in'.
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| 96 | m4_define([AH_BOTTOM],
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| 97 | [m4_define([_AH_COUNTER], m4_incr(_AH_COUNTER))dnl
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| 98 | AH_VERBATIM([zzzz]_AH_COUNTER, [$1])])
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| 99 |
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| 100 | # Initialize.
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| 101 | m4_define([_AH_COUNTER], [0])
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