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-rw-r--r--m4/curl-functions.m495
1 files changed, 94 insertions, 1 deletions
diff --git a/m4/curl-functions.m4 b/m4/curl-functions.m4
index 6067abf96..ec57b5423 100644
--- a/m4/curl-functions.m4
+++ b/m4/curl-functions.m4
@@ -5,7 +5,7 @@
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
-# Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
@@ -2314,6 +2314,99 @@ AC_DEFUN([CURL_CHECK_FUNC_GETHOSTBYADDR], [
fi
])
+dnl CURL_CHECK_FUNC_GAI_STRERROR
+dnl -------------------------------------------------
+dnl Verify if gai_strerror 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 curl_disallow_gai_strerror, then
+dnl HAVE_GAI_STRERROR will be defined.
+
+AC_DEFUN([CURL_CHECK_FUNC_GAI_STRERROR], [
+ AC_REQUIRE([CURL_INCLUDES_WINSOCK2])dnl
+ AC_REQUIRE([CURL_INCLUDES_NETDB])dnl
+ #
+ tst_links_gai_strerror="unknown"
+ tst_proto_gai_strerror="unknown"
+ tst_compi_gai_strerror="unknown"
+ tst_allow_gai_strerror="unknown"
+ #
+ AC_MSG_CHECKING([if gai_strerror can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_winsock2
+ $curl_includes_netdb
+ ]],[[
+ if(0 != gai_strerror(0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_gai_strerror="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_gai_strerror="no"
+ ])
+ #
+ if test "$tst_links_gai_strerror" = "yes"; then
+ AC_MSG_CHECKING([if gai_strerror is prototyped])
+ AC_EGREP_CPP([gai_strerror],[
+ $curl_includes_winsock2
+ $curl_includes_netdb
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_gai_strerror="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_gai_strerror="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_gai_strerror" = "yes"; then
+ AC_MSG_CHECKING([if gai_strerror is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $curl_includes_winsock2
+ $curl_includes_netdb
+ ]],[[
+ if(0 != gai_strerror(0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_gai_strerror="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_gai_strerror="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_gai_strerror" = "yes"; then
+ AC_MSG_CHECKING([if gai_strerror usage allowed])
+ if test "x$curl_disallow_gai_strerror" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_gai_strerror="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_gai_strerror="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if gai_strerror might be used])
+ if test "$tst_links_gai_strerror" = "yes" &&
+ test "$tst_proto_gai_strerror" = "yes" &&
+ test "$tst_compi_gai_strerror" = "yes" &&
+ test "$tst_allow_gai_strerror" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_GAI_STRERROR, 1,
+ [Define to 1 if you have the gai_strerror function.])
+ ac_cv_func_gai_strerror="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_gai_strerror="no"
+ fi
+])
+
dnl CURL_CHECK_FUNC_GETHOSTBYADDR_R
dnl -------------------------------------------------