From a48e2a4fbc402b88ddeb0353152a9e6d653c0da2 Mon Sep 17 00:00:00 2001
From: acxz <17132214+acxz@users.noreply.github.com>
Date: Sun, 18 Oct 2020 18:23:30 -0400
Subject: [PATCH] add cmake 3.10 support

---
 CMakeLists.txt                        |  8 +++++---
 matplot++-config.cmake.in             |  6 +++---
 source/matplot/CMakeLists.txt         |  4 ++--
 test/generate_examples/CMakeLists.txt | 10 ++++++----
 4 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b54f0e15..65189b5c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 ### Matplot++                                       ###
 #######################################################
 # Project information
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.10)
 project(matplotplusplus VERSION 1.0.1)
 set(CMAKE_CXX_STANDARD 17)
 
@@ -14,7 +14,9 @@ include(GNUInstallDirs)
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 message("CMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}")
 option(CPM_USE_LOCAL_PACKAGES "Try `find_package` before downloading dependencies" ON)
-include(cmake/CPM.cmake)
+if (NOT ${CMAKE_VERSION} VERSION_LESS "3.14.0")
+    include(cmake/CPM.cmake)
+endif ()
 
 # Check if this is a master project or a subdirectory of another project
 if (${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_SOURCE_DIR})
@@ -119,4 +121,4 @@ if (BUILD_INSTALLER AND BUILD_PACKAGE)
 
     # Always include CPack at last
     include(CPack)
-endif ()
\ No newline at end of file
+endif ()
diff --git a/matplot++-config.cmake.in b/matplot++-config.cmake.in
index 5f0a7ed5..061bdc5c 100644
--- a/matplot++-config.cmake.in
+++ b/matplot++-config.cmake.in
@@ -6,9 +6,9 @@ if(NOT ${MATPLOT_BUILT_SHARED})
 
     list(APPEND CMAKE_MODULE_PATH ${MATPLOT_CONFIG_INSTALL_DIR})
     list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
-    find_dependency(Filesystem)
-    list(POP_BACK CMAKE_MODULE_PATH)
+    find_dependency(Filesystem COMPONENTS Final Experimental)
+    list(REMOVE_ITEM CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
 endif()
 
 include("${CMAKE_CURRENT_LIST_DIR}/Matplot++Targets.cmake")
-check_required_components(Matplot++)
\ No newline at end of file
+check_required_components(Matplot++)
diff --git a/source/matplot/CMakeLists.txt b/source/matplot/CMakeLists.txt
index 8c376ebd..0d6b372f 100644
--- a/source/matplot/CMakeLists.txt
+++ b/source/matplot/CMakeLists.txt
@@ -1,4 +1,4 @@
-find_package(Filesystem REQUIRED)
+find_package(Filesystem COMPONENTS Final Experimental REQUIRED)
 
 add_library(matplot
         matplot.h
@@ -241,4 +241,4 @@ if (BUILD_INSTALLER)
             NAMESPACE Matplot++::
             DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/Matplot++
             )
-endif()
\ No newline at end of file
+endif()
diff --git a/test/generate_examples/CMakeLists.txt b/test/generate_examples/CMakeLists.txt
index 60ee072d..caf8a47c 100644
--- a/test/generate_examples/CMakeLists.txt
+++ b/test/generate_examples/CMakeLists.txt
@@ -1,4 +1,6 @@
-find_package(Filesystem REQUIRED)
-add_executable(generate_examples main.cpp)
-target_link_libraries(generate_examples std::filesystem)
-target_compile_features(generate_examples PRIVATE cxx_std_17)
\ No newline at end of file
+find_package(Filesystem COMPONENTS Final Experimental REQUIRED)
+if (NOT CXX_FILESYSTEM_IS_EXPERIMENTAL)
+    add_executable(generate_examples main.cpp)
+    target_link_libraries(generate_examples std::filesystem)
+    target_compile_features(generate_examples PRIVATE cxx_std_17)
+endif()