The previous approach didn't work for prefix builds. While a target
might be excluded from building via EXCLUDE_FROM_ALL property, when
calling make install it would still try to install the target and
thus fail.
It's not possible to modify an install() command in a post-processing
step, so we switch the semantics around.
pro2cmake will now write a
qt_exclude_tool_directories_from_default_target() call before adding
subdirectories. This will set an internal variable with a list
of the given subdirectories, which is checked by qt_add_executable.
If the current source dir matches one of the given subdirectories,
the EXCLUDE_FROM_ALL property is set both for the target and the
qt_install() command.
This should fix the failing Android prefix builds of qttools.
Amends 622894f96e
Change-Id: Ia19323a2ef72a3fb9cb752ad2d4f2742269d11c4
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
0bfbe10ff2