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annotate m4/progtest.m4 @ 17476:6057744acd2c default tip master

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author Karl Berry <karl@freefriends.org>
date Fri, 16 Aug 2013 06:32:22 -0700
parents e542fd46ad6f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # progtest.m4 serial 7 (gettext-0.18.2)
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2 dnl Copyright (C) 1996-2003, 2005, 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 dnl
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7 dnl This file can can be used in projects which are not available under
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8 dnl the GNU General Public License or the GNU Library General Public
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9 dnl License but which still want to provide support for the GNU gettext
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10 dnl functionality.
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11 dnl Please note that the actual code of the GNU gettext library is covered
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12 dnl by the GNU Library General Public License, and the rest of the GNU
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13 dnl gettext package package is covered by the GNU General Public License.
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14 dnl They are *not* in the public domain.
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15
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16 dnl Authors:
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17 dnl Ulrich Drepper <drepper@cygnus.com>, 1996.
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18
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19 AC_PREREQ([2.50])
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20
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21 # Search path for a program which passes the given test.
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22
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23 dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
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24 dnl TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
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25 AC_DEFUN([AM_PATH_PROG_WITH_TEST],
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26 [
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27 # Prepare PATH_SEPARATOR.
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28 # The user is always right.
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29 if test "${PATH_SEPARATOR+set}" != set; then
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30 # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
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31 # contains only /bin. Note that ksh looks also at the FPATH variable,
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32 # so we have to set that as well for the test.
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33 PATH_SEPARATOR=:
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34 (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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35 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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36 || PATH_SEPARATOR=';'
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37 }
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38 fi
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39
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40 # Find out how to test for executable files. Don't use a zero-byte file,
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41 # as systems may use methods other than mode bits to determine executability.
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42 cat >conf$$.file <<_ASEOF
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43 #! /bin/sh
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44 exit 0
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45 _ASEOF
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46 chmod +x conf$$.file
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47 if test -x conf$$.file >/dev/null 2>&1; then
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48 ac_executable_p="test -x"
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49 else
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50 ac_executable_p="test -f"
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51 fi
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52 rm -f conf$$.file
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53
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54 # Extract the first word of "$2", so it can be a program name with args.
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55 set dummy $2; ac_word=[$]2
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56 AC_MSG_CHECKING([for $ac_word])
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57 AC_CACHE_VAL([ac_cv_path_$1],
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58 [case "[$]$1" in
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59 [[\\/]]* | ?:[[\\/]]*)
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60 ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
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61 ;;
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62 *)
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63 ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
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64 for ac_dir in ifelse([$5], , $PATH, [$5]); do
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65 IFS="$ac_save_IFS"
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66 test -z "$ac_dir" && ac_dir=.
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67 for ac_exec_ext in '' $ac_executable_extensions; do
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68 if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
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69 echo "$as_me: trying $ac_dir/$ac_word..." >&AS_MESSAGE_LOG_FD
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70 if [$3]; then
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71 ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
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72 break 2
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73 fi
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74 fi
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75 done
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76 done
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77 IFS="$ac_save_IFS"
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78 dnl If no 4th arg is given, leave the cache variable unset,
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79 dnl so AC_PATH_PROGS will keep looking.
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80 ifelse([$4], , , [ test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
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81 ])dnl
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82 ;;
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83 esac])dnl
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84 $1="$ac_cv_path_$1"
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85 if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
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86 AC_MSG_RESULT([$][$1])
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87 else
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88 AC_MSG_RESULT([no])
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89 fi
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90 AC_SUBST([$1])dnl
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91 ])