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Contains ad hoc patches for cross building.

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Burr <dburr@topcon.com>
Date: Tue, 12 Jan 2016 18:37:28 +0100
Subject: [PATCH] Allow static building of qtserialport_qt4

Taken from:
https://github.com/qtproject/qtserialport/pull/2

The QtSerialPort library expects QT_STATIC to be defined when it is
being compiled as a static library.  If is not defined then the
Q_SERIALPORT_EXPORT macro will be set to one of
Q_DECL_IMPORT/Q_DECL_EXPORT, resulting in linking errors when the test
cases are built under Windows.

The following changeset introduced support for the QT_STATIC macro into
QT:

https://gitlab.com/pteam/pteam-qtbase/commit/96166fa56abb52157387c4911efbd4e5e6beee93

This change is not included in QT 4.8.7 (appears to be 5.x only) and
therefore QT_STATIC is not defined when QtSerialPort is compiled against
4.x QT versions.

The workaround used here is for the QSerialPort build system to define
QT_STATIC when it is being compiled statically.

diff --git a/src/serialport/qt4support/serialport.prf b/src/serialport/qt4support/serialport.prf
index 1111111..2222222 100644
--- a/src/serialport/qt4support/serialport.prf
+++ b/src/serialport/qt4support/serialport.prf
@@ -25,3 +25,5 @@ mac {
        LIBS += -lQtSerialPort$${QT_LIBINFIX}
    }
 }
+
+static:DEFINES += QT_STATIC