From 7e2b66c2b26bdeea4bb9abc44514f473ee566103 Mon Sep 17 00:00:00 2001
From: greg7mdp <greg7mdp@gmail.com>
Date: Sun, 8 Oct 2023 21:03:15 -0400
Subject: [PATCH] set `include_directories` only when needed.

---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b4f9d5..d247c28 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -92,7 +92,9 @@ if(MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj")
 endif()
 
-include_directories(${PROJECT_SOURCE_DIR})
+if (PHMAP_BUILD_TESTS OR PHMAP_BUILD_EXAMPLES)
+    include_directories(${PROJECT_SOURCE_DIR})
+endif()
 
 if (PHMAP_BUILD_TESTS)