From e2abb7ab4d3d355e2ea672ce52bc0198a12edcd0 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Thu, 26 Dec 2019 17:13:16 +0200
Subject: [PATCH 1/2] Update according to latest BoostInstall changes

---
 CMakeLists.txt | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb9f3493..8cbd09a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,5 @@
 # Copyright 2018 Mike Dev
+# 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
 #
@@ -18,20 +19,12 @@ project(boost_config VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 add_library(boost_config INTERFACE)
 add_library(Boost::config ALIAS boost_config)
 
-set_property(TARGET boost_config PROPERTY EXPORT_NAME config)
-
-target_include_directories(boost_config
-    INTERFACE
-        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-        $<INSTALL_INTERFACE:include>
-)
+target_include_directories(boost_config INTERFACE include)
 
 include(BoostInstall OPTIONAL RESULT_VARIABLE HAVE_BOOST_INSTALL)
 
 if(HAVE_BOOST_INSTALL)
 
-    install(DIRECTORY include/ DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
-
-    boost_install(boost_config)
+    boost_install(TARGETS boost_config HEADER_DIRECTORY include/)
 
 endif()

From c99d0326b3ccc1c00aa0b4b6f36c42073bfcb39a Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Fri, 27 Dec 2019 04:19:00 +0200
Subject: [PATCH 2/2] Disable installation without the superproject; add
 comments

---
 CMakeLists.txt | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8cbd09a0..2cff703d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,9 @@
 # DO NOT RELY ON THE CONTENTS OF THIS FILE!!!
 #
 
+# We support CMake 3.5, but prefer 3.16 policies and behavior
 cmake_minimum_required(VERSION 3.5...3.16)
+
 project(boost_config VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
 add_library(boost_config INTERFACE)
@@ -21,10 +23,12 @@ add_library(Boost::config ALIAS boost_config)
 
 target_include_directories(boost_config INTERFACE include)
 
-include(BoostInstall OPTIONAL RESULT_VARIABLE HAVE_BOOST_INSTALL)
+# boost_install requires PROJECT_VERSION
+# Without the superproject, we don't have any, so skip installation
 
-if(HAVE_BOOST_INSTALL)
+if(BOOST_SUPERPROJECT_VERSION)
 
-    boost_install(TARGETS boost_config HEADER_DIRECTORY include/)
+  include(BoostInstall)
+  boost_install(TARGETS boost_config HEADER_DIRECTORY include/)
 
 endif()