From a71e480e82a7c4fa91e6fbd377fcf47cacda2df4 Mon Sep 17 00:00:00 2001
From: Daniel Mentz <danielmentz@google.com>
Date: Mon, 30 Aug 2021 21:19:50 -0700
Subject: [PATCH] ANDROID: build.config: Set DTC to absolute path

The device tree compiler specified by $(DTC) is actually used as a
prerequisite for the following .dtb makefile rule:

$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE

Ensure that it's set to an absolute path so that make can actually find
it. Otherwise, make will not instantiate that rule, because it can't
find dtc.

Bug: 198176779
Fixes: 023411cbe996 ("ANDROID: Use DTC from the hermetic toolchain")
Signed-off-by: Daniel Mentz <danielmentz@google.com>
Change-Id: I4e190192b39c4cf18c6412cc85895ed1ce2ec6dd
---
 build.config.common | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.config.common b/build.config.common
index 191db48a89b9..08dd1323144a 100644
--- a/build.config.common
+++ b/build.config.common
@@ -3,9 +3,9 @@ KMI_GENERATION=0
 
 LLVM=1
 DEPMOD=depmod
-DTC=dtc
 CLANG_PREBUILT_BIN=prebuilts/clang/host/linux-x86/clang-r433403/bin
 BUILDTOOLS_PREBUILT_BIN=build/build-tools/path/linux-x86
+DTC=${ROOT_DIR}/${BUILDTOOLS_PREBUILT_BIN}/dtc
 
 EXTRA_CMDS=''
 STOP_SHIP_TRACEPRINTK=1