init repo.

third_party/curl/m4/curl-sysconfig.m4

@@ -0,0 +1,54 @@
+#***************************************************************************
+#                                  _   _ ____  _
+#  Project                     ___| | | |  _ \| |
+#                             / __| | | | |_) | |
+#                            | (__| |_| |  _ <| |___
+#                             \___|\___/|_| \_\_____|
+#
+# Copyright (C) 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
+# are also available at https://curl.se/docs/copyright.html.
+#
+# You may opt to use, copy, modify, merge, publish, distribute and/or sell
+# copies of the Software, and permit persons to whom the Software is
+# furnished to do so, under the terms of the COPYING file.
+#
+# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+# KIND, either express or implied.
+#
+# SPDX-License-Identifier: curl
+#
+#***************************************************************************
+
+AC_DEFUN([CURL_DARWIN_SYSTEMCONFIGURATION], [
+AC_MSG_CHECKING([whether to link macOS CoreFoundation, CoreServices, and SystemConfiguration frameworks])
+case $host_os in
+  darwin*)
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM([[
+#include <TargetConditionals.h>
+      ]],[[
+#if TARGET_OS_MAC && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE)
+      return 0;
+#else
+#error Not macOS
+#endif
+      ]])
+    ],[
+      build_for_macos="yes"
+    ],[
+      build_for_macos="no"
+    ])
+    if test "x$build_for_macos" != xno; then
+      AC_MSG_RESULT(yes)
+      LDFLAGS="$LDFLAGS -framework CoreFoundation -framework CoreServices -framework SystemConfiguration"
+    else
+      AC_MSG_RESULT(no)
+    fi
+    ;;
+  *)
+    AC_MSG_RESULT(no)
+esac
+])