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annotate m4/fdatasync.m4 @ 17363:5a51fb7777a9

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sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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1 # fdatasync.m4 serial 4
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2 dnl Copyright (C) 2008-2013 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_FDATASYNC],
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8 [
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9 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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10
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11 dnl Using AC_CHECK_FUNCS_ONCE would break our subsequent AC_SEARCH_LIBS
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12 AC_CHECK_DECLS_ONCE([fdatasync])
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13 LIB_FDATASYNC=
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14 AC_SUBST([LIB_FDATASYNC])
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15
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16 if test $ac_cv_have_decl_fdatasync = no; then
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17 HAVE_DECL_FDATASYNC=0
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18 dnl Mac OS X 10.7 has fdatasync but does not declare it.
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19 AC_CHECK_FUNCS([fdatasync])
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20 if test $ac_cv_func_fdatasync = no; then
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21 HAVE_FDATASYNC=0
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22 fi
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23 else
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24 dnl Solaris <= 2.6 has fdatasync() in libposix4.
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25 dnl Solaris 7..10 has it in librt.
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26 gl_saved_libs=$LIBS
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27 AC_SEARCH_LIBS([fdatasync], [rt posix4],
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28 [test "$ac_cv_search_fdatasync" = "none required" ||
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29 LIB_FDATASYNC=$ac_cv_search_fdatasync])
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30 LIBS=$gl_saved_libs
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31 fi
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32 ])