aboutsummaryrefslogtreecommitdiff
path: root/ares/m4
diff options
context:
space:
mode:
Diffstat (limited to 'ares/m4')
-rw-r--r--ares/m4/cares-functions.m498
1 files changed, 97 insertions, 1 deletions
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 8fc25a6d7..98bd070f0 100644
--- a/ares/m4/cares-functions.m4
+++ b/ares/m4/cares-functions.m4
@@ -16,7 +16,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 17
+# serial 18
dnl CARES_INCLUDES_ARPA_INET
@@ -230,6 +230,102 @@ cares_includes_ws2tcpip="\
])
+dnl CARES_CHECK_FUNC_FREEADDRINFO
+dnl -------------------------------------------------
+dnl Verify if freeaddrinfo is available, prototyped,
+dnl and can be compiled. If all of these are true,
+dnl and usage has not been previously disallowed with
+dnl shell variable cares_disallow_freeaddrinfo, then
+dnl HAVE_FREEADDRINFO will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_FREEADDRINFO], [
+ AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl
+ AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl
+ AC_REQUIRE([CARES_INCLUDES_NETDB])dnl
+ #
+ tst_links_freeaddrinfo="unknown"
+ tst_proto_freeaddrinfo="unknown"
+ tst_compi_freeaddrinfo="unknown"
+ tst_allow_freeaddrinfo="unknown"
+ #
+ AC_MSG_CHECKING([if freeaddrinfo can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_ws2tcpip
+ $cares_includes_sys_socket
+ $cares_includes_netdb
+ ]],[[
+ freeaddrinfo(0);
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_freeaddrinfo="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_freeaddrinfo="no"
+ ])
+ #
+ if test "$tst_links_freeaddrinfo" = "yes"; then
+ AC_MSG_CHECKING([if freeaddrinfo is prototyped])
+ AC_EGREP_CPP([freeaddrinfo],[
+ $cares_includes_ws2tcpip
+ $cares_includes_sys_socket
+ $cares_includes_netdb
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_freeaddrinfo="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_freeaddrinfo="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_freeaddrinfo" = "yes"; then
+ AC_MSG_CHECKING([if freeaddrinfo is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_ws2tcpip
+ $cares_includes_sys_socket
+ $cares_includes_netdb
+ ]],[[
+ freeaddrinfo(0);
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_freeaddrinfo="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_freeaddrinfo="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_freeaddrinfo" = "yes"; then
+ AC_MSG_CHECKING([if freeaddrinfo usage allowed])
+ if test "x$cares_disallow_freeaddrinfo" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_freeaddrinfo="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_freeaddrinfo="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if freeaddrinfo might be used])
+ if test "$tst_links_freeaddrinfo" = "yes" &&
+ test "$tst_proto_freeaddrinfo" = "yes" &&
+ test "$tst_compi_freeaddrinfo" = "yes" &&
+ test "$tst_allow_freeaddrinfo" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_FREEADDRINFO, 1,
+ [Define to 1 if you have the freeaddrinfo function.])
+ ac_cv_func_freeaddrinfo="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_freeaddrinfo="no"
+ fi
+])
+
+
dnl CARES_CHECK_FUNC_GETADDRINFO
dnl -------------------------------------------------
dnl Verify if getaddrinfo is available, prototyped, can