From b97746e29cb1f4dc4cfd02bb6191441dbc0d39d8 Mon Sep 17 00:00:00 2001
From: Ivan Melnikov <iv@altlinux.org>
Date: Fri, 11 Sep 2020 17:58:03 +0400
Subject: [PATCH] Fix detection of MIPS32 (#655)

_ABI64 and _ABIO32 are always defined on every
Linux MIPS system, at least if it's glibc-based:

https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/mips/sgidefs.h;h=c9e00c6da53b1a13d83b4056f01ef5c30efe76ab

The correct way to use them is to compare them
against _MIPS_SIM symbol provided by the compiler.

With this change, engine correctly detects 32-bit
MIPS systems.

Signed-off-by: Ivan A. Melnikov <iv@altlinux.org>
---
 src/engine/jam.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/engine/jam.h b/src/engine/jam.h
index 984a4a41b..25e5736fd 100644
--- a/src/engine/jam.h
+++ b/src/engine/jam.h
@@ -412,9 +412,9 @@
 #endif
 
 #ifdef __mips__
-  #if defined(_ABI64)
+  #if _MIPS_SIM == _MIPS_SIM_ABI64
     #define OSPLAT "OSPLAT=MIPS64"
-  #elif defined(_ABIO32)
+  #elif _MIPS_SIM == _MIPS_SIM_ABI32
     #define OSPLAT "OSPLAT=MIPS32"
   #endif
 #endif