Qt: No rule to make target 'release/projectname.o'. Stop

Question

I am trying to set icon for my Qt application following this link . When I run in release mode, this error appears:

No rule to make target 'release/projectname.o'/ Stop.

Here is my .pro file:

#-------------------------------------------------
#
# Project created by QtCreator 2015-01-05T12:03:20
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Muasaa
TEMPLATE = app

#CONFIG-=app_bundle

SOURCES += main.cpp\
        mainwindow.cpp \
    databasemanager.cpp

HEADERS  += mainwindow.h \
    databasemanager.h

FORMS    += mainwindow.ui

QT += sql

OTHER_FILES +=

RESOURCES +=

RC_FILE = myapp.rc

Now I see a different error:

[release/qrc_myappicon.cpp] Error 1

What to do ?

Answer 1

This looks like build-time error. Are you sure you run in release mode? Maybe you only added

RC_FILE = myapp.rc

to debug section? Show me your .pro file here.