From e6d262872390f3ee1ba93362d9ee7a142acf72d9 Mon Sep 17 00:00:00 2001
From: cobyj33 <jacobyajohnson@gmail.com>
Date: Tue, 31 Oct 2023 21:09:12 -0500
Subject: [PATCH] Set argparse to not run tests or set up install if not top
 level

---
 CMakeLists.txt | 15 +++++++++++----
 README.md      |  2 --
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91463f8..38bf1bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,11 @@
 cmake_minimum_required(VERSION 3.12.4)
 
+if(NOT DEFINED PROJECT_NAME)
+  set(ARGPARSE_IS_TOP_LEVEL ON)
+else()
+  set(ARGPARSE_IS_TOP_LEVEL OFF)
+endif()
+
 project(argparse
         VERSION 2.9.0 
         DESCRIPTION "A single header argument parser for C++17"
@@ -9,6 +15,7 @@ project(argparse
 
 option(ARGPARSE_INSTALL "Include an install target" ON)
 option(ARGPARSE_BUILD_TESTS "Build tests" ON)
+option(ARGPARSE_BUILD_SAMPLES "Build samples" OFF)
 
 include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
@@ -24,12 +31,12 @@ target_include_directories(argparse INTERFACE
 if(ARGPARSE_BUILD_SAMPLES)
   add_subdirectory(samples)
 endif()
-
-if(ARGPARSE_BUILD_TESTS)
+  
+if(ARGPARSE_BUILD_TESTS AND ARGPARSE_IS_TOP_LEVEL)
   add_subdirectory(test)
 endif()
-
-if(ARGPARSE_INSTALL)
+  
+if(ARGPARSE_INSTALL AND ARGPARSE_IS_TOP_LEVEL)
   install(TARGETS argparse EXPORT argparseConfig)
   install(EXPORT argparseConfig
           NAMESPACE argparse::
diff --git a/README.md b/README.md
index 44b0cdf..64b9236 100644
--- a/README.md
+++ b/README.md
@@ -1179,8 +1179,6 @@ PROJECT(myproject)
 
 # fetch latest argparse
 include(FetchContent)
-set(ARGPARSE_BUILD_TESTS OFF CACHE INTERNAL "Turn off building argparse tests")
-set(ARGPARSE_BUILD_SAMPLES OFF CACHE INTERNAL "Turn off building argparse samples")
 FetchContent_Declare(
     argparse
     GIT_REPOSITORY https://github.com/p-ranav/argparse.git