CGAL users discussion list

[Mark Brand <>]

Hi,

When building CGAL in mingw-cross-env, I noticed that the build failed 
if Qt happened to be present. This turned out to be caused by Qt's moc 
choking on a Boost header:

<includedir>/boost/type_traits/detail/has_binary_operator.hp:50:
Parse error at "BOOST_JOIN"

I have seen this with Qt 4.8.0 and Qt 4.7.4.

It seems reasonable to avoid this problem by letting moc skip these 
headers, which is what "#ifndef Q_MOC_RUN" does in the patch below.

The patch applies to CGAL-3.8.

regards,

Mark


From 5a7fc183023450d520993a36402a8783d709b683 Mon Sep 17 00:00:00 2001
From: Mark Brand 
<>
Date: Fri, 18 Nov 2011 00:08:25 +0100
Subject: [PATCH] prevent Qt's moc from choking on BOOST_JOIN

---
 include/CGAL/Qt/GraphicsItem.h      |    2 ++
 include/CGAL/Qt/GraphicsViewInput.h |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/include/CGAL/Qt/GraphicsItem.h b/include/CGAL/Qt/GraphicsItem.h
index 7348d02..807e200 100644
--- a/include/CGAL/Qt/GraphicsItem.h
+++ b/include/CGAL/Qt/GraphicsItem.h
@@ -24,7 +24,9 @@
 #include <CGAL/auto_link/Qt4.h>
 #include <QObject>
 #include <QGraphicsItem>
+#ifndef Q_MOC_RUN
 #include <CGAL/Object.h>
+#endif



diff --git a/include/CGAL/Qt/GraphicsViewInput.h 
b/include/CGAL/Qt/GraphicsViewInput.h
index 6c912cc..a5c5da8 100644
--- a/include/CGAL/Qt/GraphicsViewInput.h
+++ b/include/CGAL/Qt/GraphicsViewInput.h
@@ -22,7 +22,9 @@
 #define CGAL_QT_GRAPHICS_VIEW_INPUT_H

 #include <CGAL/auto_link/Qt4.h>
+#ifndef Q_MOC_RUN
 #include <CGAL/Object.h>
+#endif
 #include <QObject>

 namespace CGAL {
--
1.7.7.3