From 21fa0b21996bc70c171bfa0f0c8917ecb0e73c75 Mon Sep 17 00:00:00 2001
From: Cherry Mui <cherryyz@google.com>
Date: Fri, 3 Dec 2021 17:13:08 -0500
Subject: [PATCH] [dev.boringcrypto] crypto/internal/boring: add -pthread
 linker flag

goboringcrypto_linux_amd64.syso references pthread functions, so
we need to pass -pthread to the C linker when external linking.
Usually it is automatically added when linking with runtime/cgo
package. But in shared linkage the runtime/cgo package may be in
a separate DSO and not part of this invocation.

Fixes #49965.

Change-Id: I3a9983e715ee804594a14006f212f76769ad71db
Reviewed-on: https://go-review.googlesource.com/c/go/+/369161
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
---
 src/crypto/internal/boring/boring.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/crypto/internal/boring/boring.go b/src/crypto/internal/boring/boring.go
index f34243fe26..b8804ceb68 100644
--- a/src/crypto/internal/boring/boring.go
+++ b/src/crypto/internal/boring/boring.go
@@ -7,7 +7,12 @@
 
 package boring
 
-// #include "goboringcrypto.h"
+/*
+// goboringcrypto_linux_amd64.syso references pthread functions.
+#cgo LDFLAGS: "-pthread"
+
+#include "goboringcrypto.h"
+*/
 import "C"
 import (
 	"crypto/internal/boring/sig"