Fusion vector error when using Qt

[rlayman2000@…]

My code compiles fine until I added fusion to the project. I later found out that it is conflicting with the moc file used by Qt. I've attached an example to show this problem.

/usr/include/boost/fusion/container/vector/vector.hpp:25: Error: '#' is not followed by a macro parameter AUTOGEN: error: process for /home/work/daikin/dahmi/build/src/app/main.moc failed: /usr/include/boost/fusion/container/vector/vector.hpp:25: Error: '#' is not followed by a macro parameter

moc failed... src/app/CMakeFiles/dahmi_automoc.dir/build.make:49: recipe for target 'src/app/CMakeFiles/dahmi_automoc' failed make[2]: * [src/app/CMakeFiles/dahmi_automoc] Error 1 CMakeFiles/Makefile2:367: recipe for target 'src/app/CMakeFiles/dahmi_automoc.dir/all' failed make[1]: * [src/app/CMakeFiles/dahmi_automoc.dir/all] Error 2 make[1]: * Waiting for unfinished jobs.... /usr/include/boost/fusion/container/vector/vector.hpp:25: Error: '#' is not followed by a macro parameter AUTOGEN: error: process for /home/work/daikin/dahmi/build/src/lib/qml/moc_qml.cpp failed: /usr/include/boost/fusion/container/vector/vector.hpp:25: Error: '#' is not followed by a macro parameter

[rlayman2000@…]

demonstrates the fusion error when using with qt

[rlayman2000@…]

This is a stripped down version of the previous attachment that demonstrates the bug

[rlayman2000@…]

Just including a moc file, generated by CMake, to a source file that includes a fusion vector.hpp is enough to get this error. On the provided example, removing vector.hpp or the include for the moc file will allow the program to compile.

[Joel de Guzman]

I don't use QT. Can you provide a complete cpp file with the MOC?

[Jürgen Hunold]

This is not a fusion bug. Qt's moc has an incomplete c++ parser. Please report such bugs to Qt so they can "fix" their parser.

Workaround:

Put "#ifndef Q_MOC_RUN" around the fusion includes. moc will then skip the includes.

diff --git INDEX:/src/main.cpp WORKDIR:/src/main.cpp
index 3a8f0a8..7fe69c1 100755
--- INDEX:/src/main.cpp
+++ WORKDIR:/src/main.cpp
@@ -1,5 +1,8 @@
 #include <iostream>
+
+#ifndef Q_MOC_RUN
 #include <boost/fusion/include/vector.hpp>
+#endif
 
 int main (int argc, char *argv[])
 {

[rlayman2000@…]

I was starting to think that was the case too. I'll file a bug report with Qt then. Thanks for the help.

[Kohei Takahashi <flast@…>]

Joel, please close this.