Fix finding host tools when cross-compiling

* When using a sysroot, just setting CMAKE_PREFIX_PATH to the
  QT_HOST_PATH is not sufficient in finding for example Qt5CoreTools
  because the QT_HOST_PATH would be prefixed by the sysroot. So this
  patch switches the mode to also enable looking outside of the sysroot.
  (done by Alexandru)

* Once the Qt5CoreToolsConfigVersion.cmake was found, the built-in check
  for 32 vs. 64 bit compatibility by looking at the provided
  CMAKE_SIZEOF_VOID_P (4 when target is armv7 for example) and comparing
  it against the void* size used when building the tools would fail.
  Explicitly unsetting CMAKE_SIZEOF_VOID_P disables this check, and
  that's fine as we're not interested in any exported library targets --
  where this could cause problems -- but merely programs to run.

Change-Id: If2931dad023e39a3dbdaa17ac095131ad2c0ca60
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

0 files changed, 0 insertions, 0 deletions