[Mingw-cross-env-list] qt5 build and cmake use

[ludovic léau-mercier]

Hi all,

I try to cross compil a Qt application to windows.
I have build with succed mxe, and qt5 with the master branch and target 
: x86_64-w64-mingw32.shared
When i launch cmake on my application i have an error on find Qt : 
(comment inside log)

-- MXE x86_64-w64-mingw32.shared BUILD
-- CMAKE PREFIX 
/home/ludo/workspace/attributor/mxe/usr/x86_64-w64-mingw32.shared/qt5/lib/cmake/
-- CMAKE TOOLCHAIN 
/home/ludo/workspace/attributor/mxe/usr/x86_64-w64-mingw32.shared/share/cmake/mxe-conf.cmake

(Here seeral custom camke module to manage linux, mac and windows cross 
compilation)
-- CMAKE MODULE /home/ludo/workspace/attributor/cmake/modules

(Ok cmake file search Qt5Core  : find_package(Qt5Core REQUIRED) and 
found it : )
-- Qt5Core_DIR 
/home/ludo/workspace/attributor/mxe/usr/x86_64-w64-mingw32.shared/qt5/lib/cmake/Qt5Core

(Now cmake file search Qt5Gui : find_package(Qt5Gui) and failed : )
CMake Error at 
mxe/usr/x86_64-w64-mingw32.shared/qt5/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake:18 
(message):
  Failed to find "glu32" in "" with CMAKE_CXX_LIBRARY_ARCHITECTURE
  "x86_64-linux-gnu".

(It's very strange that cmake have the var 
CMAKE_CXX_LIBRARY_ARCHITECTURE set to x86_64-linux-gnu no ? )

Call Stack (most recent call first):
mxe/usr/x86_64-w64-mingw32.shared/qt5/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake:54 
(_qt5gui_find_extra_libs)
mxe/usr/x86_64-w64-mingw32.shared/qt5/lib/cmake/Qt5Gui/Qt5GuiConfig.cmake:155 
(include)
  cmake/modules/QtVersionAbstraction.cmake:34 (find_package)
  CMakeLists.txt:57 (include)

Have you an idea if there are a problem with mxe cmake and qt5.

Thanks

Ludovic