From 4b9692c93d658015087f19016b2bd0c9dfbccee6 Mon Sep 17 00:00:00 2001
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Sun, 28 May 2017 20:21:09 +0200
Subject: [PATCH] Fix 'missing libc-version.h' build error (uClibc/x86[_64])
 (fix commit 3d34255)

uClibc defines __GLIBC__ but does not contain libc-version.h file.

* include/private/gcconfig.h [(I386 || X86_64) && LINUX && __GLIBC__]
(GLIBC_2_19_TSX_BUG): Do not define (and do not include
gnu/libc-version.h) if __UCLIBC__.

[baruch: cherry pick from upstream bdwgc commit 047230b71d42140]
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
---
Upstream status: patch applied to bdwgc; will propagate to gauche on the next
synch of its bundled bdwgc

 gc/include/private/gcconfig.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gc/include/private/gcconfig.h b/gc/include/private/gcconfig.h
index 80920e5af570..f063664c3f52 100644
--- a/gc/include/private/gcconfig.h
+++ b/gc/include/private/gcconfig.h
@@ -1420,7 +1420,7 @@
 #         define GC_PREFETCH_FOR_WRITE(x) \
             __asm__ __volatile__ ("prefetchw %0" : : "m"(*(char *)(x)))
 #       endif
-#       if defined(__GLIBC__)
+#       if defined(__GLIBC__) && !defined(__UCLIBC__)
           /* Workaround lock elision implementation for some glibc.     */
 #         define GLIBC_2_19_TSX_BUG
 #         include <gnu/libc-version.h> /* for gnu_get_libc_version() */
@@ -2431,7 +2431,7 @@
           /* FIXME: This seems to be fixed in GLibc v2.14.              */
 #         define GETCONTEXT_FPU_EXCMASK_BUG
 #       endif
-#       if defined(__GLIBC__)
+#       if defined(__GLIBC__) && !defined(__UCLIBC__)
           /* Workaround lock elision implementation for some glibc.     */
 #         define GLIBC_2_19_TSX_BUG
 #         include <gnu/libc-version.h> /* for gnu_get_libc_version() */
-- 
2.11.0