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# ARES_CHECK_CONFIG ([DEFAULT-ACTION])2
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# ----------------------------------------------------------3
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#4
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# Checks for c-ares.5
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#6
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# This macro #defines HAVE_ARES_H if required header files are7
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# found, and sets @ARES_LDFLAGS@ and @ARES_CFLAGS@ to the necessary8
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# values.9
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#10
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# This macro is distributed in the hope that it will be useful,11
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# but WITHOUT ANY WARRANTY; without even the implied warranty of12
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.13
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14
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AC_DEFUN([ARES_TRY_LINK],15
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[16
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found_ares=$117
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[18
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#include <ares.h>19
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#include "string.h"20
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]], [[21
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struct ares_channeldata *channel;22
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struct ares_addrinfo_hints hints;23
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24
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ares_library_init(ARES_LIB_INIT_ALL);25
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ares_getaddrinfo(channel, "localhost", NULL, &hints, NULL, NULL);26
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]])],[found_ares="yes"],[])27
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])dnl28
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AC_DEFUN([ARES_CHECK_CONFIG],30
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[31
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want_ares="no"32
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AC_ARG_WITH([ares],[33
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If you want to use c-ares library:34
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AS_HELP_STRING([--with-ares@<:@=ARG@:>@], [use c-ares library @<:@default=no@:>@,])],35
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[36
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if test "x$withval" = "xyes"; then37
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want_ares="yes"38
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fi39
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]40
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)41
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42
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AC_ARG_WITH([ares-include],43
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AS_HELP_STRING([--with-ares-include=DIR],44
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[use c-ares include headers from given path.]45
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),46
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[47
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ARES_CFLAGS="-I$withval"48
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_ares_dir_set="yes"49
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want_ares="yes"50
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]51
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)52
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AC_ARG_WITH([ares-lib],54
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AS_HELP_STRING([--with-ares-lib=DIR],55
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[use c-ares libraries from given path.]56
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),57
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[58
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ARES_LDFLAGS="-L$withval"59
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_ares_dir_set="yes"60
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want_ares="yes"61
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]62
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)63
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if test "x$want_ares" != "xno"; then65
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AC_MSG_CHECKING(for ares support)66
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ARES_LIBS="-lcares"68
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69
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if test -n "$_ares_dir_set" -o -f /usr/include/ares.h; then70
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found_ares="yes"71
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elif test -f /usr/local/include/ares.h; then72
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ARES_CFLAGS="-I/usr/local/include"73
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ARES_LDFLAGS="-L/usr/local/lib"74
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found_ares="yes"75
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elif test -f /usr/pkg/include/ares.h; then76
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ARES_CFLAGS="-I/usr/pkg/include"77
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ARES_LDFLAGS="-L/usr/pkg/lib"78
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found_ares="yes"79
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else80
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found_ares="no"81
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AC_MSG_RESULT(no)82
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fi83
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84
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if test "x$found_ares" = "xyes"; then85
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am_save_CFLAGS="$CFLAGS"86
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am_save_LDFLAGS="$LDFLAGS"87
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am_save_LIBS="$LIBS"88
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CFLAGS="$CFLAGS $ARES_CFLAGS"90
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LDFLAGS="$LDFLAGS $ARES_LDFLAGS"91
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LIBS="$LIBS $ARES_LIBS"92
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ARES_TRY_LINK([no])94
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AC_CHECK_FUNCS([ares_reinit])95
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CFLAGS="$am_save_CFLAGS"97
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LDFLAGS="$am_save_LDFLAGS"98
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LIBS="$am_save_LIBS"99
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fi100
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101
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if test "x$found_ares" = "xyes"; then102
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AC_DEFINE([HAVE_ARES], 1, [Define to 1 if you have the 'c-ares' library (-lcares)])103
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AC_MSG_RESULT(yes)104
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else105
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ARES_CFLAGS=""106
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ARES_LDFLAGS=""107
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ARES_LIBS=""108
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fi109
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AC_SUBST(ARES_CFLAGS)111
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AC_SUBST(ARES_LDFLAGS)112
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AC_SUBST(ARES_LIBS)113
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fi114
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])dnl