In a cross built Qt, for example Qt for Android, calling "qmake -spec
android-clang" led to an error message:
"Could not find qmake spec '-qtconf'."
This happened, because:
- the qmake in Qt for Android is a wrapper script that calls
"qmake -qtconf qt_target.conf -spec android-clang"
- the first stage of command line argument handling in qmake garbled the
call to "qmake -spec -qtconf qt_target.conf android-clang"
We do not modify the order of arguments anymore.
Instead, we skip the "-qtconf <file>" arguments in the first argument
handling stage that is supposed to determine qmake's modus
operandi (like -project or -query).
In addition, we need to fix the assignment of
QLibraryInfoPrivate::qtconfManualPath which was only done if
QMakeGlobals::addCommandLineArguments returned ArgumentsOk. However,
this function returns ArgumentUnknown, if it encounters an argument it
cannot handle - like the project name.
Now, we assign QLibraryInfoPrivate::qtconfManualPath if there was no
error detected.
Document the return values of addCommandLineArguments.
This amends commit 661b586a69.
Pick-to: 6.1 6.0
Fixes: QTBUG-93079
Task-number: QTBUG-85136
Change-Id: I12ec25b17d64c00be2a3904b7c4a975b781500a0
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
63a812b851