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62 lines
1.7 KiB
Plaintext
62 lines
1.7 KiB
Plaintext
AC_DEFUN([AM_PATH_LIBCARES],
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[
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AC_ARG_WITH([libcares-prefix],
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[ --with-libcares-prefix=PREFIX Prefix where libcares installed (optional)],
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[libcares_prefix=$withval],
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[libcares_prefix=""])
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if test "x$libcares_prefix" = "x"; then
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libcares_prefix="/usr"
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fi
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libcares_prefix_lib=$libcares_prefix/lib
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libcares_prefix_include=$libcares_prefix/include
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LIBS_save=$LIBS
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CPPFLAGS_save=$CPPFLAGS
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LIBS="-L$libcares_prefix_lib $LIBS"
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CPPFLAGS="-I$libcares_prefix_include -Wall $CPPFLAGS"
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AC_CHECK_LIB([cares], [ares_init], [have_libcares=yes])
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if test "x$have_libcares" != "xyes"; then
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AC_CHECK_LIB([cares], [ares_init], [have_libcares=yes need_librt=yes], [],
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[-lrt])
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fi
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if test "x$have_libcares" = "xyes"; then
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AC_MSG_CHECKING([whether ares_host_callback accepts timeouts(c-ares >= 1.5)])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <ares.h>
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void callback(void* arg, int status, int timeouts, struct hostent* host);
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]],
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[[
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ares_channel channel;
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ares_gethostbyname(channel, "foo", 0, callback, 0);
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]])],
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[have_libcares1_5=yes],
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[have_libcares1_5=no])
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AC_MSG_RESULT([$have_libcares1_5])
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if test "x$have_libcares1_5" = "xyes"; then
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AC_DEFINE([HAVE_LIBCARES1_5], [1], [Define 1 if ares_host_callback accepts timeouts(c-ares >= 1.5)])
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fi
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AC_DEFINE([HAVE_LIBCARES], [1], [Define to 1 if you have libcares.])
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LIBCARES_LIBS="-L$libcares_prefix_lib -lcares"
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if test "x$need_librt" = "xyes"; then
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LIBCARES_LIBS="$LIBCARES_LIBS -lrt"
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fi
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LIBCARES_CPPFLAGS="-I$libcares_prefix_include"
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AC_SUBST(LIBCARES_LIBS)
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AC_SUBST(LIBCARES_CPPFLAGS)
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fi
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LIBS=$LIBS_save
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CPPFLAGS=$CPPFLAGS_save
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])
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