From dfa9555010535003eac69788597f53d3ff44168f Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Thu, 29 Nov 2018 23:33:10 +0100
Subject: [PATCH] qsgtexture: fix debug build with uclibc

Debug build of gsgtexture fails on uclibc since version 5.11 and
https://github.com/qt/qtdeclarative/commit/7c507eaac3f848f92f2ebdafe8ded4a064d68351:

scenegraph/util/qsgtexture.cpp:69:22: fatal error: execinfo.h: No such file or directory
 #include <execinfo.h>

Indeed, !defined(__UCLIBC__) has been replaced by defined(__GBLIBC__) to
fix build on musl but as a result, build fails on uclibc because uclibc
also defines __GLIBC__ (and it does not have execinfo like musl)

This error is raised only when building in debug mode because
CAN_BACKTRACE_EXECINFO is undefined if QT_NO_DEBUG is set

So keep defined(__GLIBC__), but put back !defined(__UCLIBC__)

Fixes:
 - http://autobuild.buildroot.org/results/6fce0ce5aea943e097532efbbc8d1e28f41e5866

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status: https://github.com/qt/qtdeclarative/pull/4]
[Rebased for Qt5.14.0]
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
 src/quick/scenegraph/coreapi/qsgtexture.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/quick/scenegraph/coreapi/qsgtexture.cpp b/src/quick/scenegraph/coreapi/qsgtexture.cpp
index dfbe4d3f..6a7bc79b 100644
--- a/src/quick/scenegraph/coreapi/qsgtexture.cpp
+++ b/src/quick/scenegraph/coreapi/qsgtexture.cpp
@@ -46,7 +46,7 @@
 #include <private/qsgmaterialshader_p.h>
 #include <QtGui/private/qrhi_p.h>
 
-#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID) && defined(__GLIBC__)
+#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID) && defined(__GLIBC__) && !defined(__UCLIBC__)
 #define CAN_BACKTRACE_EXECINFO
 #endif
 
-- 
2.23.0