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815.1.1
by Monty Taylor
Add timegm which is missing on Solaris. |
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# onceonly.m4 serial 5 |
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dnl Copyright (C) 2002-2003, 2005-2006, 2008 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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dnl This file defines some "once only" variants of standard autoconf macros. |
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dnl AC_CHECK_HEADERS_ONCE like AC_CHECK_HEADERS |
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dnl AC_CHECK_FUNCS_ONCE like AC_CHECK_FUNCS |
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dnl AC_CHECK_DECLS_ONCE like AC_CHECK_DECLS |
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dnl AC_REQUIRE([AC_FUNC_STRCOLL]) like AC_FUNC_STRCOLL |
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dnl The advantage is that the check for each of the headers/functions/decls |
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dnl will be put only once into the 'configure' file. It keeps the size of |
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dnl the 'configure' file down, and avoids redundant output when 'configure' |
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dnl is run. |
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dnl The drawback is that the checks cannot be conditionalized. If you write |
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dnl if some_condition; then gl_CHECK_HEADERS(stdlib.h); fi |
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dnl inside an AC_DEFUNed function, the gl_CHECK_HEADERS macro call expands to |
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dnl empty, and the check will be inserted before the body of the AC_DEFUNed |
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dnl function. |
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dnl This is like onceonly.m4, except that it uses diversions to named sections |
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dnl DEFAULTS and INIT_PREPARE in order to check all requested headers at once, |
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dnl thus reducing the size of 'configure'. Works with autoconf-2.57. The |
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dnl size reduction is ca. 9%. |
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dnl Autoconf version 2.59 plus gnulib is required; this file is not needed |
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dnl with Autoconf 2.60 or greater. |
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AC_PREREQ([2.59]) |
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# AC_CHECK_HEADERS_ONCE(HEADER1 HEADER2 ...) is a once-only variant of |
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# AC_CHECK_HEADERS(HEADER1 HEADER2 ...). |
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AC_DEFUN([AC_CHECK_HEADERS_ONCE], [ |
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:
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m4_foreach_w([gl_HEADER_NAME], [$1], [ |
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AC_DEFUN([gl_CHECK_HEADER_]m4_quote(translit(gl_HEADER_NAME, |
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[./-], [___])), [ |
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m4_divert_text([INIT_PREPARE], |
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[gl_header_list="$gl_header_list gl_HEADER_NAME"]) |
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gl_HEADERS_EXPANSION |
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AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_HEADER_NAME])), |
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[Define to 1 if you have the <]m4_defn([gl_HEADER_NAME])[> header file.]) |
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]) |
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AC_REQUIRE([gl_CHECK_HEADER_]m4_quote(translit(gl_HEADER_NAME, |
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[./-], [___]))) |
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]) |
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]) |
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m4_define([gl_HEADERS_EXPANSION], [ |
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m4_divert_text([DEFAULTS], [gl_header_list=]) |
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AC_CHECK_HEADERS([$gl_header_list]) |
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m4_define([gl_HEADERS_EXPANSION], []) |
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]) |
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# AC_CHECK_FUNCS_ONCE(FUNC1 FUNC2 ...) is a once-only variant of |
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# AC_CHECK_FUNCS(FUNC1 FUNC2 ...). |
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AC_DEFUN([AC_CHECK_FUNCS_ONCE], [ |
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:
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m4_foreach_w([gl_FUNC_NAME], [$1], [ |
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AC_DEFUN([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME]), [ |
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m4_divert_text([INIT_PREPARE], |
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[gl_func_list="$gl_func_list gl_FUNC_NAME"]) |
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gl_FUNCS_EXPANSION |
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AH_TEMPLATE(AS_TR_CPP([HAVE_]m4_defn([gl_FUNC_NAME])), |
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[Define to 1 if you have the `]m4_defn([gl_FUNC_NAME])[' function.]) |
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]) |
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AC_REQUIRE([gl_CHECK_FUNC_]m4_defn([gl_FUNC_NAME])) |
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]) |
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]) |
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m4_define([gl_FUNCS_EXPANSION], [ |
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m4_divert_text([DEFAULTS], [gl_func_list=]) |
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AC_CHECK_FUNCS([$gl_func_list]) |
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m4_define([gl_FUNCS_EXPANSION], []) |
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]) |
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# AC_CHECK_DECLS_ONCE(DECL1 DECL2 ...) is a once-only variant of |
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# AC_CHECK_DECLS(DECL1, DECL2, ...). |
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AC_DEFUN([AC_CHECK_DECLS_ONCE], [ |
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:
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m4_foreach_w([gl_DECL_NAME], [$1], [ |
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AC_DEFUN([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME]), [ |
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AC_CHECK_DECLS(m4_defn([gl_DECL_NAME])) |
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]) |
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AC_REQUIRE([gl_CHECK_DECL_]m4_defn([gl_DECL_NAME])) |
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]) |
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]) |