From 37b24e0bedcb2be97323d119897413addcb692e2 Mon Sep 17 00:00:00 2001
From: Natanael Copa <ncopa@alpinelinux.org>
Date: Fri, 18 Jun 2021 16:59:16 +0200
Subject: GNUInstallDirs: don't use lib64 on Alpine Linux

Fixes: #22318
---
 Modules/GNUInstallDirs.cmake | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/GNUInstallDirs.cmake b/Modules/GNUInstallDirs.cmake
index f7d8c36..d81033c 100644
--- a/Modules/GNUInstallDirs.cmake
+++ b/Modules/GNUInstallDirs.cmake
@@ -239,6 +239,7 @@ if(NOT DEFINED CMAKE_INSTALL_LIBDIR OR (_libdir_set
   endif()
   if(CMAKE_SYSTEM_NAME MATCHES "^(Linux|kFreeBSD|GNU)$"
       AND NOT CMAKE_CROSSCOMPILING
+      AND NOT EXISTS "/etc/alpine-release"
       AND NOT EXISTS "/etc/arch-release")
     if (EXISTS "/etc/debian_version") # is this a debian system ?
       if(CMAKE_LIBRARY_ARCHITECTURE)
-- 
cgit v0.12