From 748c8c7e09ce225df22ae82a4f3d189ec1d091c4 Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Fri, 10 Sep 2021 09:55:54 -0700
Subject: [PATCH] Make rust builds hermetic

Rust builds were picking up the crt objects and system libraries like
libc.so from /usr/lib/x86_64-linux-gnu/Scrt1.o and
/lib/x86_64-linux-gnu/libc.so.6.  Pass --sysroot to the linker to
point it to the glibc prebuilts.

Test: manual
Change-Id: I6540df8aef0e5c2258de77456d18a6052db627d4
---
 rust/config/x86_linux_host.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/config/x86_linux_host.go b/rust/config/x86_linux_host.go
index 0aa534f87..c10afd86f 100644
--- a/rust/config/x86_linux_host.go
+++ b/rust/config/x86_linux_host.go
@@ -26,6 +26,7 @@ var (
 		"-B${cc_config.ClangBin}",
 		"-fuse-ld=lld",
 		"-Wl,--undefined-version",
+		"--sysroot ${cc_config.LinuxGccRoot}/sysroot",
 	}
 	linuxX86Rustflags   = []string{}
 	linuxX86Linkflags   = []string{}