How to set .pro file about debug and release

[yycking]

This is my pro file

win32{
    Release:
        MOC_DIR = $$PWD/../bin/release/win32/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/release/win32/$$TARGET
        DESTDIR = $$PWD/../bin/release/win32/$$TARGET
    Debug:
        MOC_DIR = $$PWD/../bin/debug/win32/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/debug/win32/$$TARGET
        DESTDIR = $$PWD/../bin/debug/win32/$$TARGET
}
macx{
    Release:
        MOC_DIR = $$PWD/../bin/release/macx/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/release/macx/$$TARGET
        DESTDIR = $$PWD/../bin/release/macx/$$TARGET
    Debug:
        MOC_DIR = $$PWD/../bin/debug/macx/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/debug/macx/$$TARGET
        DESTDIR = $$PWD/../bin/debug/macx/$$TARGET
}

win32{
    Release:
        MOC_DIR = $$PWD/../bin/release/win32/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/release/win32/$$TARGET
        DESTDIR = $$PWD/../bin/release/win32/$$TARGET
    Debug:
        MOC_DIR = $$PWD/../bin/debug/win32/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/debug/win32/$$TARGET
        DESTDIR = $$PWD/../bin/debug/win32/$$TARGET
}
macx{
    Release:
        MOC_DIR = $$PWD/../bin/release/macx/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/release/macx/$$TARGET
        DESTDIR = $$PWD/../bin/release/macx/$$TARGET
    Debug:
        MOC_DIR = $$PWD/../bin/debug/macx/$$TARGET
        OBJECTS_DIR = $$PWD/../bin/debug/macx/$$TARGET
        DESTDIR = $$PWD/../bin/debug/macx/$$TARGET
}

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Question 1
In windows
when I "Set Build Configuration" to debug or release, it always run like this.

Starting C:\test\bin\debug\win32\app\app.exe...
C:\test\bin\debug\win32\app\app.exe exited with code 0

Starting C:\test\bin\debug\win32\app\app.exe...
C:\test\bin\debug\win32\app\app.exe exited with code 0

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But I can find the app.exe at folder of bin\debug\win32\app\app.exe and bin\release\win32\app\app.exe.

Question 2
In mac
when I "Set Build Configuration" to debug or release, it always crate app.app at
bin\debug\macx\app\app.app
Why can not found bin\release\macx\app\app.app ?

[ktk]

The condition to check whether something is a "Debug" build is CONFIG(debug, debug|release)

[rajji_saini]

You can do something like:

CONFIG(debug, debug|release) {
CONFIG -= debug release
CONFIG += debug
QMAKE_POST_LINK = " "
}
CONFIG(release, debug|release) {
CONFIG -= debug release
CONFIG += release
QMAKE_POST_LINK = " "
}