1 files changed, 45 insertions, 0 deletions
diff --git a/src/boost/tools/cmake/include/BoostMessage.cmake b/src/boost/tools/cmake/include/BoostMessage.cmake
new file mode 100644
index 000000000..f827f82b6
--- /dev/null
+++ b/src/boost/tools/cmake/include/BoostMessage.cmake
@@ -0,0 +1,45 @@
+# Copyright 2019 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+if(NOT CMAKE_VERSION VERSION_LESS 3.10)
+  include_guard()
+endif()
+
+# boost_message(
+#   [FATAL_ERROR|SEND_ERROR|WARNING|AUTHOR_WARNING|DEPRECATION|NOTICE|STATUS
+#     |VERBOSE|DEBUG]
+#   messages...)
+
+function(boost_message type)
+
+  if(type STREQUAL "VERBOSE")
+    if(Boost_VERBOSE OR Boost_DEBUG)
+      set(type STATUS)
+    elseif(CMAKE_VERSION VERSION_LESS 3.15)
+      return()
+    endif()
+  endif()
+
+  if(type STREQUAL "DEBUG")
+    if(Boost_DEBUG)
+      set(type STATUS)
+    elseif(CMAKE_VERSION VERSION_LESS 3.15)
+      return()
+    endif()
+  endif()
+
+  if(type STREQUAL "NOTICE" AND CMAKE_VERSION VERSION_LESS 3.15)
+    set(type "")
+  endif()
+
+  set(m "")
+  math(EXPR last "${ARGC}-1")
+
+  foreach(i RANGE 1 ${last})
+    string(APPEND m "${ARGV${i}}")
+  endforeach()
+
+  message(${type} "${m}")
+
+endfunction()