annotate m4/isblank.m4 @ 14434:7624b26aea3d

sys_socket, netdb: Document problem with socklen_t. * doc/posix-headers/sys_socket.texi: Mention lack of socklen_t on some platforms. * doc/posix-headers/netdb.texi: Likewise.
author Bruno Haible <bruno@clisp.org>
date Sat, 19 Mar 2011 13:39:12 +0100
parents 97fc9a21a8fb
children 2f5bc02c2203
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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cd64e80f94e4 link-warning: always build headers with link warnings
Eric Blake <ebb9@byu.net>
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1 # isblank.m4 serial 2
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97fc9a21a8fb maint: update almost all copyright ranges to include 2011
Jim Meyering <meyering@redhat.com>
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2 dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 AC_DEFUN([gl_FUNC_ISBLANK],
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8 [
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9 dnl Persuade glibc <ctype.h> to declare isblank().
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10 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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11
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12 AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
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13 AC_CHECK_FUNCS_ONCE([isblank])
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14 if test $ac_cv_func_isblank = no; then
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15 HAVE_ISBLANK=0
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16 AC_LIBOBJ([isblank])
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17 fi
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18 ])