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autoheader.m4
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# This file is part of Autoconf. -*- Autoconf -*- # Interface with autoheader. # Copyright (C) 1992-1996, 1998-2002, 2008-2012 Free Software # Foundation, Inc. # This file is part of Autoconf. This program is free # software; you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # Under Section 7 of GPL version 3, you are granted additional # permissions described in the Autoconf Configure Script Exception, # version 3.0, as published by the Free Software Foundation. # # You should have received a copy of the GNU General Public License # and a copy of the Autoconf Configure Script Exception along with # this program; see the files COPYINGv3 and COPYING.EXCEPTION # respectively. If not, see <http://www.gnu.org/licenses/>. # Written by David MacKenzie, with help from # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, # Roland McGrath, Noah Friedman, david d zuhn, and many others. # AH_OUTPUT(KEY, TEXT) # -------------------- # Pass TEXT to autoheader. # This macro is `read' only via `autoconf --trace', it outputs nothing. m4_define([AH_OUTPUT], []) # AH_VERBATIM(KEY, TEMPLATE) # -------------------------- # If KEY is direct (i.e., no indirection such as in KEY=$my_func which # may occur if there is AC_CHECK_FUNCS($my_func)), issue an autoheader # TEMPLATE associated to the KEY. Otherwise, do nothing. TEMPLATE is # output as is, with no formatting. # # Quote for Perl '' strings, which are those used by Autoheader. m4_define([AH_VERBATIM], [AS_LITERAL_WORD_IF([$1], [AH_OUTPUT(_m4_expand([$1]), AS_ESCAPE([[$2]], [\']))])]) # AH_TEMPLATE(KEY, DESCRIPTION) # ----------------------------- # Issue an autoheader template for KEY, i.e., a comment composed of # DESCRIPTION (properly wrapped), and then #undef KEY. m4_define([AH_TEMPLATE], [AH_VERBATIM([$1], m4_text_wrap([$2 */], [ ], [/* ])[ @%:@undef ]_m4_expand([$1]))]) # AH_TOP(TEXT) # ------------ # Output TEXT at the top of `config.h.in'. m4_define([AH_TOP], [m4_define([_AH_COUNTER], m4_incr(_AH_COUNTER))dnl AH_VERBATIM([0000]_AH_COUNTER, [$1])]) # AH_BOTTOM(TEXT) # --------------- # Output TEXT at the bottom of `config.h.in'. m4_define([AH_BOTTOM], [m4_define([_AH_COUNTER], m4_incr(_AH_COUNTER))dnl AH_VERBATIM([zzzz]_AH_COUNTER, [$1])]) # Initialize. m4_define([_AH_COUNTER], [0])
