[Interest] Automatic relink of executable after change in dependant static library

[Elvis Stansvik]

2017-06-16 22:36 GMT+02:00 Enmaniac Software <enmaniac.software at gmail.com>:
> Ah indeed. It worked!
>
> To recap: I have added the following to MyApp PRO file:
> PRE_TARGETDEPS += $$PWD/../staticlib/debug/staticlib.lib
>
> It’s a bit pity that PRE_TARGETDEPS takes the absolute path to the file rather than simply the target name (thus resolving the path on its own depending on OS and naming conventions, q

qmake is a basic build system in many ways. If you are in need of a
bigger hammer, look at e.g. CMake or Meson.

Elvis

>
> Thank you Thiago and Elivs for the help!
>
> -----Original Message-----
> From: Elvis Stansvik [mailto:elvstone at gmail.com]
> Sent: Friday, June 16, 2017 10:15 PM
> To: Enmaniac Software
> Cc: interest at qt-project.org Interest
> Subject: Re: [Interest] Automatic relink of executable after change in dependant static library
>
> 2017-06-16 21:08 GMT+02:00 Enmaniac Software <enmaniac.software at gmail.com>:
>> Hi all,
>>
>>
>>
>> I hope I am posting it in the right place. This is my first post in
>> this mailing list. If that’s not the right place, I would like to
>> apologize and feel free to direct me to the correct one.
>>
>>
>>
>> As for my question. I am trying to figure out why my executable is not
>> being updated when the static library which it depends on gets
>> changed. Here are my PRO files.
>>
>>
>>
>> Root PRO file:
>>
>>
>>
>> TEMPLATE = subdirs
>>
>> SUBDIRS += myapp staticlib
>>
>>
>>
>> myapp.subdir = myapp
>>
>> staticlib.subdir = staticlib
>>
>>
>>
>> myapp.depends = staticlib
>>
>>
>>
>> MyApp PRO file:
>>
>> QT += core
>>
>> QT -= gui
>>
>>
>>
>> CONFIG += c++11
>>
>>
>>
>> TARGET = myapp
>>
>> CONFIG += console
>>
>> CONFIG -= app_bundle
>>
>>
>>
>> TEMPLATE = app
>>
>>
>>
>> SOURCES += main.cpp
>>
>>
>>
>> # The following define makes your compiler emit warnings if you use
>>
>> # any feature of Qt which as been marked deprecated (the exact
>> warnings
>>
>> # depend on your compiler). Please consult the documentation of the
>>
>> # deprecated API in order to know how to port your code away from it.
>>
>> DEFINES += QT_DEPRECATED_WARNINGS
>>
>>
>>
>> # You can also make your code fail to compile if you use deprecated APIs.
>>
>> # In order to do so, uncomment the following line.
>>
>> # You can also select to disable deprecated APIs only up to a certain
>> version of Qt.
>>
>> #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs
>> deprecated before Qt 6.0.0
>>
>>
>>
>> LIBS += -L$$PWD/../staticlib/debug -lstaticlib
>>
>> INCLUDEPATH += $$PWD/../staticlib
>>
>>
>>
>> Static library PRO file:
>>
>> QT       -= gui
>>
>>
>>
>> TARGET = StaticLib
>>
>> TEMPLATE = lib
>>
>> CONFIG += staticlib
>>
>>
>>
>> # The following define makes your compiler emit warnings if you use
>>
>> # any feature of Qt which as been marked as deprecated (the exact
>> warnings
>>
>> # depend on your compiler). Please consult the documentation of the
>>
>> # deprecated API in order to know how to port your code away from it.
>>
>> DEFINES += QT_DEPRECATED_WARNINGS
>>
>>
>>
>> # You can also make your code fail to compile if you use deprecated APIs.
>>
>> # In order to do so, uncomment the following line.
>>
>> # You can also select to disable deprecated APIs only up to a certain
>> version of Qt.
>>
>> #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs
>> deprecated before Qt 6.0.0
>>
>>
>>
>> SOURCES += staticlib.cpp
>>
>>
>>
>> HEADERS += staticlib.h
>>
>> unix {
>>
>>     target.path = /usr/lib
>>
>>     INSTALLS += target
>>
>> }
>>
>>
>>
>> When the static library is changed, it is recompiled and relinked as
>> expected. However, the executable itself is not.
>>
>> I have tried to use QMAKE from command line and through QtCreator and
>> have the same issue (Qt 5.8.0 and QtCreator 4.2.1, Windows 10 x64,
>> MSVC 2015)
>>
>>
>>
>> Do I miss something here ?
>
> I think you're looking for PRE_TARGETDEPS [1].
>
> Elvis
>
> [1] http://doc.qt.io/qt-5/qmake-variable-reference.html#pre-targetdeps
>
>>
>>
>>
>> Thanks in advance!
>>
>>
>> _______________________________________________
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>>
>