Subproject builds by itself, but can't find includes when entire project is built.

Yosemite

I don't understand how subproject include paths work. I have a subproject that builds if I right-click on it and select "Build Subproject." When I build the entire project, the subproject in question can't find any of it's own included headers. This is the .pro file for the subproject:

# Created by and for Qt Creator This file was created for editing the project sources only.
# You may attempt to use it for building too, by modifying this file here.

QT       -= core gui

TARGET = Gamma
TEMPLATE = lib

DEFINES += GAMMA_LIBRARY

HEADERS = \
   $$PWD/external/include/portaudio.h \
   $$PWD/external/include/sndfile.h \
   $$PWD/Gamma/Access.h \
   $$PWD/Gamma/Allocator.h \
   $$PWD/Gamma/Analysis.h \
   $$PWD/Gamma/arr.h \
   $$PWD/Gamma/AudioIO.h \
   $$PWD/Gamma/Config.h \
   $$PWD/Gamma/Constants.h \
   $$PWD/Gamma/Containers.h \
   $$PWD/Gamma/Conversion.h \
   $$PWD/Gamma/Delay.h \
   $$PWD/Gamma/DFT.h \
   $$PWD/Gamma/Domain.h \
   $$PWD/Gamma/Effects.h \
   $$PWD/Gamma/Envelope.h \
   $$PWD/Gamma/FFT.h \
   $$PWD/Gamma/Filter.h \
   $$PWD/Gamma/FormantData.h \
   $$PWD/Gamma/Gamma.h \
   $$PWD/Gamma/gen.h \
   $$PWD/Gamma/HRFilter.h \
   $$PWD/Gamma/ipl.h \
   $$PWD/Gamma/mem.h \
   $$PWD/Gamma/Node.h \
   $$PWD/Gamma/Noise.h \
   $$PWD/Gamma/Oscillator.h \
   $$PWD/Gamma/Print.h \
   $$PWD/Gamma/pstdint.h \
   $$PWD/Gamma/Recorder.h \
   $$PWD/Gamma/rnd.h \
   $$PWD/Gamma/SamplePlayer.h \
   $$PWD/Gamma/Scheduler.h \
   $$PWD/Gamma/scl.h \
   $$PWD/Gamma/SoundFile.h \
   $$PWD/Gamma/Spatial.h \
   $$PWD/Gamma/Strategy.h \
   $$PWD/Gamma/Sync.h \
   $$PWD/Gamma/tbl.h \
   $$PWD/Gamma/Thread.h \
   $$PWD/Gamma/Timer.h \
   $$PWD/Gamma/TransferFunc.h \
   $$PWD/Gamma/Types.h \
   $$PWD/Gamma/UnitMaps.h \
   $$PWD/src/fftpack++.h \
   $$PWD/gamma.h

SOURCES = \
   $$PWD/src/arr.cpp \
   $$PWD/src/AudioIO.cpp \
   $$PWD/src/Conversion.cpp \
   $$PWD/src/DFT.cpp \
   $$PWD/src/Domain.cpp \
   $$PWD/src/FFT_fftpack.cpp \
   $$PWD/src/fftpack++1.cpp \
   $$PWD/src/fftpack++2.cpp \
   $$PWD/src/Print.cpp \
   $$PWD/src/Recorder.cpp \
   $$PWD/src/Scheduler.cpp \
   $$PWD/src/scl.cpp \
   $$PWD/src/SoundFile.cpp \
   $$PWD/src/Timer.cpp

INCLUDEPATH = \
    $$PWD/. \
    $$PWD/external/include \
    $$PWD/Gamma \
    $$PWD/src

DEPENDPATH = \
    $$PWD/. \
    $$PWD/external/include \
    $$PWD/Gamma \
    $$PWD/src

#LibSndFile
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1d
else:unix: LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1

INCLUDEPATH += $$PWD/external/lib_win64
DEPENDPATH += $$PWD/external/lib_win64

#PortAudio
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64d
else:unix: LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64

INCLUDEPATH += $$PWD/external/lib_win64
DEPENDPATH += $$PWD/external/lib_win64

And this is the .pro file for the top-level subdir project that contains it:

TEMPLATE = subdirs
SUBDIRS = App Gamma

App .depends = Gamma

win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/gamma/release/ -lGamma
else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/gamma/debug/ -lGamma
else:unix: LIBS += -L$$OUT_PWD/gamma/ -lGamma

INCLUDEPATH += $$PWD/Gamma
DEPENDPATH += $$PWD/Gamma

I can alter an example include statement from e.g.

"#include "Gamma/gen.h""

to

"#include "../Gamma/gen.h""

And that works. If I print $$PWD from the top-level during QMake I get the project folder, so I though adding $$PWD/Gamma to the INCLUDEPATH would give me what I need.

I've also tried adding the following to the INCLUDEPATH and DEPENDPATH in the top-level .pro file:
.
..
Gamma
./Gamma
./Gamma/Gamma
../Gamma
../Gamma/Gamma
$$PWD/Gamma/Gamma

I clearly misapprehend something about this process, what is it?

aha_1980

@Yosemite your App needs an own .pro file.

The toplevel .pro file only contains the subdirs and depends, nothing else.

You can factor out common includes into a .pri file and include in all .pro, though.

Yosemite

@aha_1980 Thanks for the reply. App does have a .pro file, I just didn't include it because the errors were with the Gamma project. This is it:


QT += qml quick widgets printsupport
RESOURCES += qml.qrc \
    styles.qrc
TEMPLATE = app
CONFIG += c++17

HEADERS = \
   $$PWD/external/exprtk/exprtk.hpp \
   $$PWD/external/qcustomplot/qcustomplot.h \
   $$PWD/amod.h \
   $$PWD/audifier.h \
   $$PWD/callback.h \
   $$PWD/commands.h \
   $$PWD/constants.h \
#   $$PWD/dataprocessor.h \
   $$PWD/dataset.h \
   $$PWD/enums.h \
   $$PWD/envelope.h \
   $$PWD/equalizer.h \
   $$PWD/filereader.h \
   $$PWD/fmod.h \
   $$PWD/frame.h \
   $$PWD/granulator.h \
   $$PWD/mainwindow.h \
   $$PWD/mapevaluator.h \
   $$PWD/noise.h \
   $$PWD/oscillator.h \
   $$PWD/panner.h \
   $$PWD/parameter.h \
   $$PWD/parameterfloat.h \
   $$PWD/parameterfloatinterface.h \
   $$PWD/parameterindex.h \
   $$PWD/parameterindexinterface.h \
   $$PWD/playhead.h \
   $$PWD/ringbuffer.h \
   $$PWD/style.h \
   $$PWD/synthitem.h \
   $$PWD/track.h \
   $$PWD/trackheader.h \
   $$PWD/trackname.h \
   $$PWD/trackplotter.h \
   $$PWD/trackview.h \
   $$PWD/transport.h \
   $$PWD/transportwidget.h \
   $$PWD/userdata.h \
   $$PWD/utility.h \
   $$PWD/volume.h

SOURCES = \
   $$PWD/external/qcustomplot/qcustomplot.cpp \
   $$PWD/images/alpha.png \
   $$PWD/images/AM.png \
   $$PWD/images/AUD.png \
   $$PWD/images/down-arrow.svg \
   $$PWD/images/ENV.png \
   $$PWD/images/EQ.png \
   $$PWD/images/FM.png \
   $$PWD/images/interpolate-off.svg \
   $$PWD/images/interpolate-on.svg \
   $$PWD/images/logo.png \
   $$PWD/images/logo.svg \
   $$PWD/images/loop-off.svg \
   $$PWD/images/loop-on.svg \
   $$PWD/images/MOD.png \
   $$PWD/images/NSE.png \
   $$PWD/images/OSC.png \
   $$PWD/images/OUT.png \
   $$PWD/images/PAN.png \
   $$PWD/images/pause.svg \
   $$PWD/images/play.svg \
   $$PWD/images/up-arrow.svg \
   $$PWD/images/VOL.png \
   $$PWD/AM.qml \
   $$PWD/amod.cpp \
   $$PWD/AUD.qml \
   $$PWD/audifier.cpp \
#   $$PWD/dataprocessor.cpp \
   $$PWD/dataset.cpp \
   $$PWD/deployment.pri \
   $$PWD/Editor.qml \
   $$PWD/EditorDoubleSpinBox.qml \
   $$PWD/EditorFixed.qml \
   $$PWD/EditorFloatParameter.qml \
   $$PWD/EditorLabel.qml \
   $$PWD/EditorLayout.qml \
   $$PWD/EditorMapper.qml \
   $$PWD/EditorMenu.qml \
   $$PWD/EditorParameterHeader.qml \
   $$PWD/EditorScaler.qml \
   $$PWD/EditorTitle.qml \
   $$PWD/ENV.qml \
   $$PWD/envelope.cpp \
   $$PWD/EQ.qml \
   $$PWD/equalizer.cpp \
   $$PWD/filereader.cpp \
   $$PWD/FM.qml \
   $$PWD/fmod.cpp \
   $$PWD/granulator.cpp \
   $$PWD/ItemCreation.js \
   $$PWD/main.cpp \
   $$PWD/main.qml \
   $$PWD/mainwindow.cpp \
   $$PWD/noise.cpp \
   $$PWD/NSE.qml \
   $$PWD/OSC.qml \
   $$PWD/oscillator.cpp \
   $$PWD/OUT.qml \
   $$PWD/Palette.qml \
   $$PWD/PaletteItem.qml \
   $$PWD/PAN.qml \
   $$PWD/panner.cpp \
   $$PWD/parameter.cpp \
   $$PWD/parameterfloat.cpp \
   $$PWD/parameterfloatinterface.cpp \
   $$PWD/parameterindex.cpp \
   $$PWD/parameterindexinterface.cpp \
   $$PWD/PatchManager.qml \
   $$PWD/playhead.cpp \
   $$PWD/qml.qrc \
   $$PWD/README.md \
   $$PWD/SessionCode.js \
   $$PWD/Style.js \
   $$PWD/styles.qrc \
   $$PWD/styles.qss \
   $$PWD/synthitem.cpp \
   $$PWD/SynthItem.qml \
   $$PWD/track.cpp \
   $$PWD/trackheader.cpp \
   $$PWD/trackname.cpp \
   $$PWD/trackplotter.cpp \
   $$PWD/trackview.cpp \
   $$PWD/transport.cpp \
   $$PWD/transportwidget.cpp \
   $$PWD/utility.cpp \
   $$PWD/Utils.js \
   $$PWD/VOL.qml \
   $$PWD/volume.cpp

INCLUDEPATH = \
    $$PWD/. \
    $$PWD/external/qcustomplot

Apologies though, I'm not sure what you're asking me to try otherwise. Are you saying that my top-level .pro file has something it shouldn't, or that it is missing something?

aha_1980

@Yosemite yeah, remove everything except

TEMPLATE = subdirs
SUBDIRS = App Gamma
App .depends = Gamma

from the top level pro file and move it into a .pri file.

Yosemite

@aha_1980

Gotcha. Here is the new top-level .pro file:

TEMPLATE = subdirs
SUBDIRS = App Gamma

App.depends = Gamma

And the common.pri:

Gamma.subdir = Gamma
App.subdir = App

INCLUDEPATH += $$PWD/Gamma
DEPENDPATH += $$PWD/Gamma

I tried including common.pri in the Gamma .pro file thusly:

!include(common.pri) {
    error("common.pri not found")
}

But there was no change. The Gamma library still can't find the Gamma include files. Tried including in the top-level .pro just in case, with the same result.

aha_1980

@Yosemite

Gamma.subdir = Gamma App.subdir = App

remove that from the .pri file.

Then do a full rebuild with running qmake

Have a look at the compiler output to see the includepaths passes to the compiler

Your on a good way, you just need to fine-tune a bit!

Yosemite

I did get there eventually, I really appreciate the help @aha_1980 .

I'll try and state what was done clearly, to see if I understand it and to complete the thread. I included common.pri in the Gamma. pro file. I wrote the include path relative to the entire project folder, after printing $$PWD and seeing it was the top-level project folder.

There were other errors in the .pro files, especially a bunch of extra src files that were accidentally added while importing the subprojects, so here are the results.

Top-level .pro file:

TEMPLATE = subdirs
SUBDIRS = App Gamma

App.depends = Gamma

common.pri file:

INCLUDEPATH += $$PWD/Gamma
DEPENDPATH += $$PWD/Gamma

Gamma .pro file:

# Created by and for Qt Creator This file was created for editing the project sources only.
# You may attempt to use it for building too, by modifying this file here.

QT       -= core gui

TARGET = Gamma

TEMPLATE = lib

CONFIG+= staticlib

DEFINES += GAMMA_LIBRARY

HEADERS = \
   $$PWD/external/include/portaudio.h \
   $$PWD/external/include/sndfile.h \
   $$PWD/Gamma/Access.h \
   $$PWD/Gamma/Allocator.h \
   $$PWD/Gamma/Analysis.h \
   $$PWD/Gamma/arr.h \
   $$PWD/Gamma/AudioIO.h \
   $$PWD/Gamma/Config.h \
   $$PWD/Gamma/Constants.h \
   $$PWD/Gamma/Containers.h \
   $$PWD/Gamma/Conversion.h \
   $$PWD/Gamma/Delay.h \
   $$PWD/Gamma/DFT.h \
   $$PWD/Gamma/Domain.h \
   $$PWD/Gamma/Effects.h \
   $$PWD/Gamma/Envelope.h \
   $$PWD/Gamma/FFT.h \
   $$PWD/Gamma/Filter.h \
   $$PWD/Gamma/FormantData.h \
   $$PWD/Gamma/Gamma.h \
   $$PWD/Gamma/gen.h \
   $$PWD/Gamma/HRFilter.h \
   $$PWD/Gamma/ipl.h \
   $$PWD/Gamma/mem.h \
   $$PWD/Gamma/Node.h \
   $$PWD/Gamma/Noise.h \
   $$PWD/Gamma/Oscillator.h \
   $$PWD/Gamma/Print.h \
   $$PWD/Gamma/pstdint.h \
   $$PWD/Gamma/Recorder.h \
   $$PWD/Gamma/rnd.h \
   $$PWD/Gamma/SamplePlayer.h \
   $$PWD/Gamma/Scheduler.h \
   $$PWD/Gamma/scl.h \
   $$PWD/Gamma/SoundFile.h \
   $$PWD/Gamma/Spatial.h \
   $$PWD/Gamma/Strategy.h \
   $$PWD/Gamma/Sync.h \
   $$PWD/Gamma/tbl.h \
   $$PWD/Gamma/Thread.h \
   $$PWD/Gamma/Timer.h \
   $$PWD/Gamma/TransferFunc.h \
   $$PWD/Gamma/Types.h \
   $$PWD/Gamma/UnitMaps.h \
   $$PWD/src/fftpack++.h \
   $$PWD/gamma.h

SOURCES = \
   $$PWD/src/arr.cpp \
   $$PWD/src/AudioIO.cpp \
   $$PWD/src/Conversion.cpp \
   $$PWD/src/DFT.cpp \
   $$PWD/src/Domain.cpp \
   $$PWD/src/FFT_fftpack.cpp \
   $$PWD/src/fftpack++1.cpp \
   $$PWD/src/fftpack++2.cpp \
   $$PWD/src/Print.cpp \
   $$PWD/src/Recorder.cpp \
   $$PWD/src/Scheduler.cpp \
   $$PWD/src/scl.cpp \
   $$PWD/src/SoundFile.cpp \
   $$PWD/src/Timer.cpp

INCLUDEPATH = \
    $$PWD/. \
    $$PWD/external/include \
    $$PWD/Gamma \
    $$PWD/src

DEPENDPATH = \
    $$PWD/. \
    $$PWD/external/include \
    $$PWD/Gamma \
    $$PWD/src

#LibSndFile
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1d
else:unix: LIBS += -L$$PWD/external/lib_win64/ -llibsndfile-1

INCLUDEPATH += $$PWD/external/lib_win64
DEPENDPATH += $$PWD/external/lib_win64

#PortAudio
win32:CONFIG(release, debug|release): LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64d
else:unix: LIBS += -L$$PWD/external/lib_win64/ -lportaudio_x64

INCLUDEPATH += $$PWD/external/lib_win64
DEPENDPATH += $$PWD/external/lib_win64

!include(../common.pri) {
    error("common.pri not found")
}

aha_1980

Hi @Yosemite, glad you got it working and thanks for reporting back!

Regards