From e80a44109f3f1d0cf822f01b0c87a41f2816f32d Mon Sep 17 00:00:00 2001
From: Yifan Hong <elsk@google.com>
Date: Wed, 10 Nov 2021 15:44:37 -0800
Subject: [PATCH] ANDROID: Kleaf: Fix build by exporting mixed-build-prefix

Works around build breakage. Once we find the proper fix, we should
revert this.

Bug: 205893923
Test: builds

Change-Id: I8b4ab0eb5895232b4e0f3f7639984e4093b77e75
Signed-off-by: Yifan Hong <elsk@google.com>
---
 Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index 523eead51a48..094f89883044 100644
--- a/Makefile
+++ b/Makefile
@@ -149,6 +149,10 @@ endif
 
 mixed-build-prefix = $(if $(KBUILD_MIXED_TREE),$(KBUILD_MIXED_TREE)/)
 export KBUILD_MIXED_TREE
+# This is a hack for kleaf to set mixed-build-prefix within the execution of a make rule, e.g.
+# within __modinst_pre.
+# TODO(b/205893923): Revert this hack once it is properly handled.
+export mixed-build-prefix
 
 # Kbuild will save output files in the current working directory.
 # This does not need to match to the root of the kernel source tree.