From 03c2487999d36b292351a93f121a4d60728a51d4 Mon Sep 17 00:00:00 2001
From: Spiros Tsalikis <spiros.tsalikis@kitware.com>
Date: Sat, 25 Feb 2023 14:38:28 -0500
Subject: [PATCH] Create a CMakeLists.txt file and create an interface library

Also move exprtk.hpp into an include folder
---
 CMakeLists.txt                   | 42 ++++++++++++++++++++++++++++++++
 exprtk.hpp => include/exprtk.hpp |  0
 2 files changed, 42 insertions(+)
 create mode 100644 CMakeLists.txt
 rename exprtk.hpp => include/exprtk.hpp (100%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..a0e0075
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,42 @@
+# **************************************************************
+# *         C++ Mathematical Expression Toolkit Library        *
+# *                                                            *
+# * Author: Arash Partow (1999-2023)                           *
+# * URL: https://www.partow.net/programming/exprtk/index.html  *
+# *                                                            *
+# * Copyright notice:                                          *
+# * Free use of the Mathematical Expression Toolkit Library is *
+# * permitted under the guidelines and in accordance with the  *
+# * most current version of the MIT License.                   *
+# * http://www.opensource.org/licenses/MIT                     *
+# *                                                            *
+# **************************************************************
+
+# set the minimum version of cmake required
+cmake_minimum_required(VERSION 3.14)
+
+# set the project name
+project(ExprTk)
+
+# specify the C++ standard
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# set additional compiler flags
+set(CMAKE_VERBOSE_MAKEFILE ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+# Appends the cmake path to MAKE_MODULE_PATH variable.
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
+
+# Determine ExprTk Source Version
+find_package(Git QUIET)
+include(GitDetermineVersion)
+# The upcoming command sets the following variables: ExprTk_VERSION, ExprTk_VERSION_MAJOR, ExprTk_VERSION_MINOR,
+# ExprTk_VERSION_PATCH, ExprTk_VERSION_PATCH_EXTRA, ExprTk_VERSION_FULL
+determine_version("${CMAKE_CURRENT_SOURCE_DIR}" "${GIT_EXECUTABLE}" "ExprTk")
+
+# create an interface library for the ExprTk header
+add_library(ExprTk INTERFACE)
+# set the include directory for the interface library
+target_include_directories(ExprTk INTERFACE include)
diff --git a/exprtk.hpp b/include/exprtk.hpp
similarity index 100%
rename from exprtk.hpp
rename to include/exprtk.hpp