Hello again friends, this time I come here, with the following question:

I have the following project structure:
Qt Code: 
  1. editor/
  2.     Editor.pro // is a subdirs project
  3.     Bin /
  4.         Bin.pro // is a subdirs project
  5.     com/
  6.         com.pro // is a subdirs project
  7.     Common /
  8.         Common.pro // is a subdirs project
  9.         Language /
  10.             Language.pro // is a subdirs project
  11.             Core /
  12.                 Core.pro // is a share library project
  13.             Php /
  14.                 Php.pro  // is a share library project Depends on core.pro
  15.         Project /
  16.             Project.pro  // is a share library project Depends on language.pro
  17.     Examples /
  18.         Examples.pro // is a subdirs project
  19.         Createproject /
  20.             Createproject.pro // Depends on project.pro
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And the following are the respective configurations of the .pro files that I indicated in the previous structure:

Editor.pro
Qt Code: 
  1. TEMPLATE = subdirs
  2.  
  3. SUBDIRS += \
  4.     bin \
  5.     com \
  6.     common \
  7.     examples
  8.  
  9. bin.depends = com
  10. com.depends = common
  11. common.depends = com
  12. examples.depends = common
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Common.pro
Qt Code: 
  1. TEMPLATE = subdirs
  2.  
  3. SUBDIRS += \
  4.     actions \
  5.     addons \
  6.     codeeditor \
  7.     codegenerator \
  8.     files \
  9.     highlighter \
  10.     language \
  11.     project \
  12.     utils \
  13.     workspace
  14.  
  15. actions.depends = addons
  16. addons.depends = actions files language project utils
  17. project.depends = language
  18. workspace.depends = codeeditor
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Language.pro
Qt Code: 
  1. TEMPLATE = subdirs
  2.  
  3. SUBDIRS += \
  4.     core \
  5.     php
  6.  
  7. php.depends = core
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Core.pro
Qt Code: 
  1. #-------------------------------------------------
  2. #
  3. # Project created by QtCreator 2017-02-12T18:09:20
  4. #
  5. #-------------------------------------------------
  6.  
  7. QT       -= gui
  8.  
  9. CONFIG += c++11
  10.  
  11. greaterThan(QT_MAJOR_VERSION, 4): QT +=
  12.  
  13. TARGET = core
  14. TEMPLATE = lib
  15.  
  16. DEFINES += CORE_LIBRARY
  17.  
  18. # The following define makes your compiler emit warnings if you use
  19. # any feature of Qt which as been marked as deprecated (the exact warnings
  20. # depend on your compiler). Please consult the documentation of the
  21. # deprecated API in order to know how to port your code away from it.
  22. DEFINES += QT_DEPRECATED_WARNINGS
  23.  
  24. # You can also make your code fail to compile if you use deprecated APIs.
  25. # In order to do so, uncomment the following line.
  26. # You can also select to disable deprecated APIs only up to a certain version of Qt.
  27. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
  28.  
  29. SOURCES += Core.cpp \
  30.     model/ClassAbs.cpp \
  31.     model/MethodAbs.cpp \
  32.     model/ModelObj.cpp \
  33.     model/ParamAbs.cpp
  34.  
  35. HEADERS += Core.h\
  36.         core_global.h \
  37.     model/ClassAbs.h \
  38.     model/MethodAbs.h \
  39.     model/ModelObj.h \
  40.     model/ParamAbs.h
  41.  
  42. DESTDIR = ../
  43.  
  44. unix {
  45.     target.path = /usr/lib
  46.     INSTALLS += target
  47. }
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Php.pro
Qt Code: 
  1. #-------------------------------------------------
  2. #
  3. # Project created by QtCreator 2017-02-12T18:09:45
  4. #
  5. #-------------------------------------------------
  6.  
  7. QT       -= gui
  8.  
  9. CONFIG += c++11
  10.  
  11. greaterThan(QT_MAJOR_VERSION, 4): QT += xml  xmlpatterns
  12.  
  13. TARGET = php
  14. TEMPLATE = lib
  15.  
  16. DEFINES += PHP_LIBRARY
  17.  
  18. # The following define makes your compiler emit warnings if you use
  19. # any feature of Qt which as been marked as deprecated (the exact warnings
  20. # depend on your compiler). Please consult the documentation of the
  21. # deprecated API in order to know how to port your code away from it.
  22. DEFINES += QT_DEPRECATED_WARNINGS
  23.  
  24. # You can also make your code fail to compile if you use deprecated APIs.
  25. # In order to do so, uncomment the following line.
  26. # You can also select to disable deprecated APIs only up to a certain version of Qt.
  27. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
  28.  
  29. DEPENDPATH += . ../core \
  30.     ../../../com/ecosoftware/console \
  31.     ../../utils \
  32.     ../../project
  33. INCLUDEPATH += . ../core \
  34.     ../../../com/ecosoftware/console \
  35.     ../../utils \
  36.     ../../project
  37.  
  38. LIBS''= -L -lcore
  39.  
  40. SOURCES += Php.cpp \
  41.     controller/PhpDef.cpp \
  42.     controller/PhpLoadLanguage.cpp \
  43.     controller/PhpParser.cpp \
  44.     controller/PhpUtils.cpp \
  45.     model/Attribute.cpp \
  46.     model/Class.cpp \
  47.     model/Const.cpp \
  48.     model/PhpClassTypeModelAbs.cpp \
  49.     model/Restriction.cpp \
  50.     model/Trait.cpp \
  51.     model/Interface.cpp \
  52.     model/Method.cpp \
  53.     model/Param.cpp
  54.  
  55. HEADERS += Php.h\
  56.         php_global.h \
  57.     controller/PhpDef.h \
  58.     controller/PhpLoadLanguage.h \
  59.     controller/PhpParser.h \
  60.     controller/PhpUtils.h \
  61.     model/Attribute.h \
  62.     model/Class.h \
  63.     model/Const.h \
  64.     model/Param.h \
  65.     model/PhpClassTypeModelAbs.h \
  66.     model/Restriction.h \
  67.     model/Interface.h \
  68.     model/Method.h \
  69.     model/Trait.h
  70.  
  71. DESTDIR = ../
  72.  
  73. unix {
  74.     target.path = /usr/lib
  75.     INSTALLS += target
  76. }
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Project.pro
Qt Code: 
  1. #-------------------------------------------------
  2. #
  3. # Project created by QtCreator 2017-02-12T18:33:25
  4. #
  5. #-------------------------------------------------
  6.  
  7. QT       -= gui
  8.  
  9. CONFIG += c++11
  10.  
  11. greaterThan(QT_MAJOR_VERSION, 4): QT += widgets xml xmlpatterns
  12.  
  13. TARGET = project
  14. TEMPLATE = lib
  15.  
  16. DEFINES += PROJECT_LIBRARY
  17.  
  18. # The following define makes your compiler emit warnings if you use
  19. # any feature of Qt which as been marked as deprecated (the exact warnings
  20. # depend on your compiler). Please consult the documentation of the
  21. # deprecated API in order to know how to port your code away from it.
  22. DEFINES += QT_DEPRECATED_WARNINGS
  23.  
  24. # You can also make your code fail to compile if you use deprecated APIs.
  25. # In order to do so, uncomment the following line.
  26. # You can also select to disable deprecated APIs only up to a certain version of Qt.
  27. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
  28.  
  29. DEPENDPATH += . ../language/core \
  30.                 ../language/php
  31.  
  32. INCLUDEPATH += . ../language/core \
  33.                  ../language/php
  34.  
  35. SOURCES += \
  36.     view/ProjectDlg.cpp \
  37.     controller/Manifest.cpp \
  38.     controller/ProjectBuilder.cpp \
  39.     model/Project.cpp
  40.  
  41. HEADERS +=\
  42.         project_global.h \
  43.     view/ProjectDlg.h \
  44.     controller/Manifest.h \
  45.     controller/ProjectBuilder.h \
  46.     model/Project.h
  47.  
  48. DESTDIR = ../
  49.  
  50. unix {
  51.     target.path = /usr/lib
  52.     INSTALLS += target
  53. }
  54.  
  55. FORMS += \
  56.     view/ProjectDlg.ui
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Examples.pro
Qt Code: 
  1. TEMPLATE = subdirs
  2.  
  3. SUBDIRS += \
  4.     createproject
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Createproject.pro
Qt Code: 
  1. #-------------------------------------------------
  2. #
  3. # Project created by QtCreator 2017-02-13T12:14:49
  4. #
  5. #-------------------------------------------------
  6.  
  7. QT       += core gui
  8.  
  9. CONFIG += c++11
  10.  
  11. greaterThan(QT_MAJOR_VERSION, 4): QT += widgets xml xmlpatterns
  12.  
  13. TARGET = createproject
  14. TEMPLATE = app
  15.  
  16. # The following define makes your compiler emit warnings if you use
  17. # any feature of Qt which as been marked as deprecated (the exact warnings
  18. # depend on your compiler). Please consult the documentation of the
  19. # deprecated API in order to know how to port your code away from it.
  20. DEFINES += QT_DEPRECATED_WARNINGS
  21.  
  22. # You can also make your code fail to compile if you use deprecated APIs.
  23. # In order to do so, uncomment the following line.
  24. # You can also select to disable deprecated APIs only up to a certain version of Qt.
  25. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
  26.  
  27. DEPENDPATH += . ../../common/project
  28.  
  29. INCLUDEPATH += . ../../common/project
  30.  
  31. LIBS''= -L../../common -lproject
  32.  
  33. SOURCES += main.cpp\
  34.         mainwindow.cpp
  35.  
  36. HEADERS  += mainwindow.h
  37.  
  38. FORMS    += mainwindow.ui
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All this, for the following, if I build each library separately no problem, all compile.

But when I decide to compile createproject (which is a test executable) to test the correct execution of the code and the links to the libraries, I get the following error:

Qt Code: 
  1. ../../../../editor/common/language/php/model/Attribute.h:8:28: fatal error: model / ModelObj.h: No such file or directory
  2. #include "model / ModelObj.h"
  3.                                      ^
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I have reviewed everything and from what I see, everything is fine, or so I think. Even if I build createproject without run command, if it compiles.

I'm working on
Debian 9 64bit
Qt 5.7.1
QtCreator 4.2.0

What can I be doing wrong? If you need any additional information let me know.

Thanks in advance for your answers and help.