From 2aefc4ee703ce3ff70ad25915005cacfbaae0c49 Mon Sep 17 00:00:00 2001
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Fri, 27 Mar 2020 21:23:53 +0100
Subject: [PATCH] gcc: define _REENTRANT for OpenRISC when -pthread is passed

The detection of pthread support fails on OpenRISC unless _REENTRANT
is defined. Added the CPP_SPEC definition to correct this.

Patch sent upstream: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94372

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
---
 gcc/config/or1k/linux.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/config/or1k/linux.h b/gcc/config/or1k/linux.h
index 4b2f7b6e1fd..b00d23ddfa0 100644
--- a/gcc/config/or1k/linux.h
+++ b/gcc/config/or1k/linux.h
@@ -32,6 +32,8 @@
 #undef MUSL_DYNAMIC_LINKER
 #define MUSL_DYNAMIC_LINKER  "/lib/ld-musl-or1k.so.1"
 
+#define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
 #undef LINK_SPEC
 #define LINK_SPEC "%{h*}			\
    %{static:-Bstatic}				\
-- 
2.21.0