Build subdirs template project

FloatFlower.Huang

I am writing a multiple projects managed by SUBDIRS template, my source code tree:

/ SubdirProject
├─ SubdirProject.pro
├─ /BarLib
├─── BarLib.pro
├─── barlib.h
├─── barlib_global.h
├─── barlib.cpp
├─ /FooApp
└─── main.cpp

I want to build this project to this build tree:

/build
├─ FooApp.exe
├─ /lib
└─── Barlib.dll

however, my actually build tree like this:

/build
├─BarLib
│  ├─build
│  │  ├─debug
│  │  │  ├─ .moc
│  │  │  ├─ .obj
│  │  │  └─ Barlib.dll
│  │  └─release
│  │  │  ├─ .moc
│  │  │  ├─ .obj
│  │  │  └─ Barlib.dll
│  ├─debug
│  └─release
└─FooApp
    ├─build
    │  ├─debug
    │  │  ├─ .moc
    │  │  ├─ .obj
    │  │  └─ FooApp.exe
    │  └─release
    │      ├─.moc
    │      ├─ .obj
    │      └─ FooApp.exe    
    ├─debug
    └─release

Here are my .pro files:
SubdirProject.pro file

TEMPLATE = subdirs

SUBDIRS += \
    BarLib \
    FooApp

CONFIG += ordered

Barlib.pro file

// .. whatever

release: DESTDIR = build/release
debug:   DESTDIR = build/debug

OBJECTS_DIR = $$DESTDIR/.obj
MOC_DIR = $$DESTDIR/.moc
RCC_DIR = $$DESTDIR/.qrc
UI_DIR = $$DESTDIR/.ui

FooApp.pro file

// .. whatever

release: DESTDIR = build/release
debug:   DESTDIR = build/debug

OBJECTS_DIR = $$DESTDIR/.obj
MOC_DIR = $$DESTDIR/.moc
RCC_DIR = $$DESTDIR/.qrc
UI_DIR = $$DESTDIR/.ui

How do I modify my project file that I can make my project be built to the build tree below? Futhermore, I have specify the OBJECT_DIR variable, why there are empty directory created, such as Barlib/release, Barlin/debug, etc ?

Here is complete code: https://gist.github.com/floatflower/400f9150429a56590f280a0c49ae243f

aha_1980

Hi @FloatFlower.Huang

The additional debug and release folders are created on Windows because on Windows you cannot mix debug and release objects in one executable. Please see https://bugreports.qt.io/browse/QTBUG-52347 for more clarification.

If you use shadow-building and never mix objects, than you can set CONFIG-=debug_and_release in your pro files and then you get the same behavior on Windows as on Linux or macOS.

Addional mark: I saw CONFIG += ordered in your top pro file. Don't use it! There are better ways: https://blog.rburchell.com/2013/10/every-time-you-configordered-kitten-dies.html