I want to be able to debug into qt source code so i started compiling the latest Qt version 5.8 on my MAC.
I followed the instructions on Qt webpage about building it. But this is what i get after running configure.

**../qt-everywhere-opensource-src-5.8.0/configure -prefix /Users/userName/qt-install-5.8 0 -opensource -debug-and-release
+ cd qtbase
+ /Users/userName/qt-everywhere-opensource-src-5.8.0/qtbase/configure -top-level -prefix /Users/username/qt-install-5.8 0 -opensource -debug-and-release

This is the Qt Open Source Edition.

You are licensed to use this software under the terms of
the GNU Lesser General Public License (LGPL) version 3.
You are also licensed to use this software under the terms of
the GNU General Public License (GPL) version 2.

Type 'L' to view the GNU Lesser General Public License version 3.
Type 'G' to view the GNU General Public License version 2.
Type 'yes' to accept this license offer.
Type 'no' to decline this license offer.

Do you accept the terms of either license? yes

Preparing build tree...
Creating qmake...
............................................................................................Done.

ERROR: Invalid command line parameter '0'.**

I don't understand the last line. I was trying to do a shadow build by creating a new folder for build. I also specified the install directory while running config above. After running config, these are the files that got created in my build folder.

config.cache config.log qtbase

Does this look correct.?

I am a newbie to MAC platform but i've completed compiling QT from sources on windows & linux.

When i run make, this is what i got

make
make: *** No targets specified and no makefile found.  Stop

Thanks in advance for your help.