[CMake] CMake, QT5 and cross compilation

[Jakob van Bethlehem]

Maybe you can do something with the ‘HINTS’ option to find_package()?
https://cmake.org/cmake/help/v3.4/command/find_package.html

Sincerely,
Jakob

> On 17 Dec 2015, at 18:03, Hauke Krüger <krueger at ind.rwth-aachen.de> wrote:
> 
> Hi everybody,
> 
> I have a project which builds to realize a Qt5 application. I use the
> latest CMAKE Qt5 mechanisms such as AUTOMOC etc with good success.
> 
> The project builds on Raspberry Pi if cmake is run on the Raspberry Pi
> itself since all Qt tools are available and run also on the Raspberry Pi.
> 
> Lately, I wanted to compile this project in a cross compile approach.
> For this purpose, I mount the Raspberry Pi file system to be part of the
> directory tree on my host Linux PC.
> Of course, I use find_package to locate the Qt5 package in the directory
> branch related to the Raspberry Pi. The corresponding
> moc, uic and rcc tools have been built for arm. Therefore, I can not
> run the moc from the location as reported by find_package in the cross
> build approach.
> 
> So, here is my question: How can I overwrite the moc-executable (and uic
> etc) path to use another moc version than the one found by the
> find_package mechanism? If I use the moc which is part of my Linux host
> PC rather than the arm compiled moc in the Raspberry file system, the
> code generation should be fine, and afterwards, I will link against the
> Raspberry Pi Qt5 libraries.
> 
> Thank you for any help and best regards
> 
> Hauke
> 
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