From c0b3019d1b298ed682fa50e75740ec287ffb604d Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Fri, 11 Nov 2022 23:58:35 +0100
Subject: reduce libc++ adding unneeded includes in stl headers

this is mostly for correctness reasons, not build speed.
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3e25051c..53373c1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,6 +139,10 @@ add_definitions(
     -DIMGUI_DISABLE_OBSOLETE_KEYIO
 )
 
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
+    add_definitions(-D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)
+endif()
+
 fm_run_hook(fm-userconfig-src)
 
 include_directories(.)
-- 
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