From 843eb2ef918d5ae3d09de088110cb026ca25306b Mon Sep 17 00:00:00 2001
From: Ross Burton <ross.burton@arm.com>
Date: Tue, 26 May 2020 14:38:02 -0500
Subject: [PATCH] allow setting sysroot for libgcc lookup

Explicitly pass the new variable LIBGCC_LOCATE_CFLAGS variable when searching
for the compiler libraries as there's no easy way to reliably pass --sysroot
otherwise.

Upstream-Status: Pending [https://github.com/OP-TEE/optee_os/issues/4188]
Signed-off-by: Ross Burton <ross.burton@arm.com>
---
 mk/gcc.mk | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mk/gcc.mk b/mk/gcc.mk
index adc77a24f25e..81bfa78ad8d7 100644
--- a/mk/gcc.mk
+++ b/mk/gcc.mk
@@ -13,11 +13,11 @@ nostdinc$(sm)	:= -nostdinc -isystem $(shell $(CC$(sm)) \
 			-print-file-name=include 2> /dev/null)
 
 # Get location of libgcc from gcc
-libgcc$(sm)  	:= $(shell $(CC$(sm)) $(CFLAGS$(arch-bits-$(sm))) \
+libgcc$(sm)  	:= $(shell $(CC$(sm)) $(LIBGCC_LOCATE_CFLAGS) $(CFLAGS$(arch-bits-$(sm))) \
 			-print-libgcc-file-name 2> /dev/null)
-libstdc++$(sm)	:= $(shell $(CXX$(sm)) $(CXXFLAGS$(arch-bits-$(sm))) $(comp-cxxflags$(sm)) \
+libstdc++$(sm)	:= $(shell $(CXX$(sm)) $(LIBGCC_LOCATE_CFLAGS) $(CXXFLAGS$(arch-bits-$(sm))) $(comp-cxxflags$(sm)) \
 			-print-file-name=libstdc++.a 2> /dev/null)
-libgcc_eh$(sm)	:= $(shell $(CXX$(sm)) $(CXXFLAGS$(arch-bits-$(sm))) $(comp-cxxflags$(sm)) \
+libgcc_eh$(sm)	:= $(shell $(CXX$(sm)) $(LIBGCC_LOCATE_CFLAGS) $(CXXFLAGS$(arch-bits-$(sm))) $(comp-cxxflags$(sm)) \
 			-print-file-name=libgcc_eh.a 2> /dev/null)
 
 # Define these to something to discover accidental use