From 87ab394510cb58aee6fcafdaf87d06323d81157c Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Fri, 27 Dec 2019 03:46:56 +0200
Subject: [PATCH] Fetch BoostFetch.cmake from boostorg/cmake

---
 CMakeLists.txt         |  9 +++-
 cmake/BoostFetch.cmake | 97 ------------------------------------------
 2 files changed, 8 insertions(+), 98 deletions(-)
 delete mode 100644 cmake/BoostFetch.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f636a11..5f39d42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,14 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
 
     # Fetch support files
 
-    include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/BoostFetch.cmake")
+    message(STATUS "Fetching BoostFetch.cmake")
+
+    file(DOWNLOAD
+      "https://raw.githubusercontent.com/boostorg/cmake/develop/include/BoostFetch.cmake"
+      "${CMAKE_BINARY_DIR}/fetch_and_include/BoostFetch.cmake"
+    )
+
+    include("${CMAKE_BINARY_DIR}/fetch_and_include/BoostFetch.cmake")
 
     boost_fetch(boostorg/cmake TAG develop NO_ADD_SUBDIR)
 
diff --git a/cmake/BoostFetch.cmake b/cmake/BoostFetch.cmake
deleted file mode 100644
index 32dcf83..0000000
--- a/cmake/BoostFetch.cmake
+++ /dev/null
@@ -1,97 +0,0 @@
-# Copyright 2018, 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()
-
-if(NOT COMMAND FetchContent_Populate)
-
-    if(CMAKE_VERSION VERSION_LESS 3.11)
-
-        message(STATUS "Fetching FetchContent.cmake")
-
-        file(DOWNLOAD
-            "https://gitlab.kitware.com/cmake/cmake/raw/v3.11.3/Modules/FetchContent.cmake"
-            "${CMAKE_BINARY_DIR}/Modules/FetchContent.cmake"
-        )
-
-        file(DOWNLOAD
-            "https://gitlab.kitware.com/cmake/cmake/raw/v3.11.3/Modules/FetchContent/CMakeLists.cmake.in"
-            "${CMAKE_BINARY_DIR}/Modules/FetchContent/CMakeLists.cmake.in"
-        )
-
-        include(${CMAKE_BINARY_DIR}/Modules/FetchContent.cmake)
-
-    else()
-
-        include(FetchContent)
-
-    endif()
-
-endif()
-
-function(boost_fetch)
-
-    cmake_parse_arguments(_ "EXCLUDE_FROM_ALL;NO_ADD_SUBDIR" "TAG" "" ${ARGN})
-
-    if(NOT __UNPARSED_ARGUMENTS)
-
-        message(FATAL_ERROR "boost_fetch: missing required argument, repository name")
-        return()
-
-    endif()
-
-    list(GET __UNPARSED_ARGUMENTS 0 REPO)
-    list(REMOVE_AT __UNPARSED_ARGUMENTS 0)
-
-    if(__UNPARSED_ARGUMENTS)
-
-        message(WARNING "boost_fetch: extra arguments ignored: ${__UNPARSED_ARGUMENTS}")
-
-    endif()
-
-    if(NOT __TAG)
-
-        set(__TAG master)
-
-    endif()
-
-    string(MAKE_C_IDENTIFIER ${REPO} NAME)
-
-    if(CMAKE_VERSION VERSION_LESS 3.6)
-
-        FetchContent_Declare(${NAME} QUIET GIT_REPOSITORY "https://github.com/${REPO}" GIT_TAG ${__TAG})
-
-    else()
-
-        FetchContent_Declare(${NAME} QUIET GIT_REPOSITORY "https://github.com/${REPO}" GIT_TAG ${__TAG} GIT_SHALLOW 1)
-
-    endif()
-
-    FetchContent_GetProperties(${NAME})
-
-    if(NOT ${NAME}_POPULATED)
-
-        message(STATUS "Fetching ${REPO}:${__TAG}")
-
-        FetchContent_Populate(${NAME})
-
-        if(__NO_ADD_SUBDIR)
-
-          # Skip add_subdirectory
-
-        elseif(__EXCLUDE_FROM_ALL)
-
-          add_subdirectory(${${NAME}_SOURCE_DIR} ${${NAME}_BINARY_DIR} EXCLUDE_FROM_ALL)
-
-        else()
-
-          add_subdirectory(${${NAME}_SOURCE_DIR} ${${NAME}_BINARY_DIR})
-
-        endif()
-
-    endif()
-
-endfunction(boost_fetch)