From 8defe3380e4656e4239877a0cd89607c36bf0ac7 Mon Sep 17 00:00:00 2001
From: Pablo Romero <pablorcum@gmail.com>
Date: Tue, 7 Sep 2021 12:10:08 -0400
Subject: CMakeFindPackageMode: Honor CMAKE_SYSROOT to detect lib64 platforms

Add `CMAKE_SYSROOT` to check the full path on host OS. In a
non-crosscompiling use case, the call to `CMAKE_SYSROOT` is empty.

Fixes: #22608
---
 Modules/CMakeFindPackageMode.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/CMakeFindPackageMode.cmake b/Modules/CMakeFindPackageMode.cmake
index 815dfc9..726e2a2 100644
--- a/Modules/CMakeFindPackageMode.cmake
+++ b/Modules/CMakeFindPackageMode.cmake
@@ -78,7 +78,7 @@ if(UNIX)
   # from the outside
   if(NOT CMAKE_SIZEOF_VOID_P)
     set(CMAKE_SIZEOF_VOID_P 4)
-    if(EXISTS /usr/lib64)
+    if(EXISTS ${CMAKE_SYSROOT}/usr/lib64)
       set(CMAKE_SIZEOF_VOID_P 8)
     else()
       # use the file utility to check whether itself is 64 bit:
-- 
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