annotate m4/fopen.m4 @ 17363:5a51fb7777a9

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 # fopen.m4 serial 9
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2 dnl Copyright (C) 2007-2013 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_FOPEN],
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8 [
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9 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
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10 AC_REQUIRE([AC_CANONICAL_HOST])
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11 case "$host_os" in
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12 mingw* | pw*)
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13 dnl Replace fopen, for handling of "/dev/null".
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14 REPLACE_FOPEN=1
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15 dnl fopen on mingw also has the trailing slash bug.
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16 gl_cv_func_fopen_slash="guessing no"
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17 ;;
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18 *)
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19 dnl fopen("foo/", "w") should not create a file when the file name has a
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20 dnl trailing slash.
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21 AC_CACHE_CHECK([whether fopen recognizes a trailing slash],
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22 [gl_cv_func_fopen_slash],
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23 [
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24 AC_RUN_IFELSE(
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25 [AC_LANG_SOURCE([[
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26 #include <stddef.h>
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27 #include <stdio.h>
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28 int main ()
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29 {
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30 return fopen ("conftest.sl/", "w") != NULL;
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31 }]])],
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32 [gl_cv_func_fopen_slash=yes],
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33 [gl_cv_func_fopen_slash=no],
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34 [
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35 changequote(,)dnl
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36 case "$host_os" in
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37 aix* | hpux* | solaris2.[0-9] | solaris2.[0-9].*)
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38 gl_cv_func_fopen_slash="guessing no" ;;
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39 *)
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40 gl_cv_func_fopen_slash="guessing yes" ;;
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41 esac
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42 changequote([,])dnl
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43 ])
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44 rm -f conftest.sl
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45 ])
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46 ;;
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47 esac
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48 case "$gl_cv_func_fopen_slash" in
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49 *no)
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50 AC_DEFINE([FOPEN_TRAILING_SLASH_BUG], [1],
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51 [Define to 1 if fopen() fails to recognize a trailing slash.])
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52 REPLACE_FOPEN=1
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53 ;;
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54 esac
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55 ])
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56
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57 # Prerequisites of lib/fopen.c.
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58 AC_DEFUN([gl_PREREQ_FOPEN], [:])