Fix framework path for *_header_check targets

When building a Qt module against an installer-provided Qt on macOS, the
module pulls in the headersclean feature that creates the *_header_check
targets. Those targets try to compile the public headers of the module,
and the compilation command contains the -iframework argument. That
-iframework argument is supposed to point to the directory where the Qt
libs are installed. However, it pointed to the original
CMAKE_INSTALL_PREFIX of the machine where Qt was packaged.

Use the QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX variable instead
that contains the real installation location, even for an
installer-provided Qt.

Fixes: QTBUG-90402
Change-Id: I27de8b3cc816488c2716042383b334d5c421452d
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
(cherry picked from commit bd8d74e0e265297d61fe3b42f71a282bf381c379)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions