c++ - How to create re-usable libraries based on qmake? -

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i have multiple applications use 1 or more common libraries. libraries depend on each other.

here files tree:

libaries/    library1/        library1.pro        library1.cpp        library1.h    library2/        library2.pro        library2.cpp        library2.h applications/    app1/        app1.pro        main.cpp    app2/        app2.pro        main.cpp

app1 depends on library1. app2 depends on library1 , library2.

i'd able develop in qt creator in easy way, when open application1 have following behavior:

  • application1 code available in qt creator
  • library1 code available in qt creator
  • compiling application1 automatically compiles library1 , puts output .dll/.so file in same directory application1 .exe.

this visual studio able years , seems such basic thing me don't understand i'm 1 having problem.

do have clue on how ? tried different solutions based on subdirs, never reach 3 points above.

edit:to clarify little, able like:

application1.pro

include("library1")

application2.pro

include("library1") include("library2")

and having working automatically. found solution requires files in libraries know "parent" doing includes, non-sense me, library should not aware of program using it.

you can project : myproject:

  • project.pro
    • app
      • app.pro
      • main.cpp
    • lib1
      • lib1.pro
      • lib1.pri
      • lib1.h
      • lib1.cpp
    • lib2
      • lib2.pro
      • lib2.pri
      • lib2.h
      • lib2.cpp

project.pro

template = subdirs config += ordered  subdirs += \     lib1 \     lib2 \     app

app.pro

qt       += core  qt       -= gui  include(../lib1/lib1.pri) include(../lib2/lib2.pri)  target = app config   += console config   -= app_bundle  template = app   sources += main.cpp

main.cpp

#include <qcoreapplication> #include "lib1.h" #include "lib2.h"  int main(int argc, char *argv[]) {     qcoreapplication a(argc, argv);     lib1 lib1();      return a.exec(); }

lib1.pro

qt       -= gui  target = lib1 template = lib  defines += lib1_library  sources += lib1.cpp  headers += lib1.h\         lib1_global.h  destdir = ../libs  unix {     target.path = /usr/lib     installs += target }  other_files += \     lib1.pri

lib1.pri

includepath += $$pwd/ libs += -l$$out_pwd/../libs/ -llib1

lib2.pro

qt       -= gui  target = lib2 template = lib  defines += lib2_library  sources += lib2.cpp  headers += lib2.h\         lib1_global.h  destdir = ../libs  unix {     target.path = /usr/lib     installs += target }  other_files += \     lib2.pri

lib2.pri

includepath += $$pwd/ libs += -l$$out_pwd/../libs/ -llib2

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