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1. download creator source code
   compile by existing qtcreator or qmake command

qmake -r -spec macx-clang

1. download doxygen plugin

set related paths in .pro fileDEFINES += DOXYGEN_LIBRARY# Doxygen filesSOURCES += doxygenplugin.cpp \    doxygensettings.cpp \    doxygensettingsstruct.cpp \    doxygensettingswidget.cpp \    doxygen.cpp \    doxygenfilesdialog.cppHEADERS += doxygenplugin.h \        doxygen_global.h \        doxygenconstants.h \    doxygensettings.h \    doxygensettingsstruct.h \    doxygensettingswidget.h \    doxygen.h \    doxygenfilesdialog.hFORMS += \    doxygensettingswidget.ui \    doxygenfilesdialog.uiRESOURCES += doxygen.qrc# Qt Creator linking## set the QTC_SOURCE environment variable to override the setting hereQTC_SOURCE="/Users/taojiang/qt-creator-opensource-src-4.5.0"#message($$QTC_SOURCE)QTC_BUILD=/Users/taojiang/build-qtcreator-Desktop_Qt_5_10_0_clang_64bit-ReleaseQTCREATOR_SOURCES = $$QTC_SOURCEunix:isEmpty(QTCREATOR_SOURCES):QTCREATOR_SOURCES=$$(HOME)/src/qt-creator-opensource-src-4.3.0win32:isEmpty(QTCREATOR_SOURCES):QTCREATOR_SOURCES=D:\src\qt-creator-opensource-src-4.3.0#message($$QTCREATOR_SOURCES)## set the QTC_BUILD environment variable to override the setting hereIDE_BUILD_TREE = $$QTC_BUILDunix:isEmpty(IDE_BUILD_TREE):IDE_BUILD_TREE=$$(HOME)/qtcreator-4.3.0win32:isEmpty(IDE_BUILD_TREE):IDE_BUILD_TREE=D:\src\build-qtcreator-5_6_0_msvc2013-Release## set the QTC_LIB_BASENAME environment variable to override the setting here## this variable points to the library installation path, relative to IDE_BUILD_TREE,## so that $$IDE_BUILD_TREE/$$IDE_LIBRARY_BASENAME/qtcreator will be used by## qtcreatorplugin.pri automatically as the qtcreator library pathIDE_LIBRARY_BASENAME = $$(QTC_LIB_BASENAME)unix:isEmpty(IDE_BUILD_TREE):IDE_BUILD_TREE=usr/lib/x86_64-linux-gnu## uncomment to build plugin into user config directory## 
   
    /plugins/
    
     ##    where 
     
       is e.g.##    "%LOCALAPPDATA%\QtProject\qtcreator" on Windows Vista and later##    "$XDG_DATA_HOME/data/QtProject/qtcreator" or "~/.local/share/data/QtProject/qtcreator" on Linux##    "~/Library/Application Support/QtProject/Qt Creator" on MacUSE_USER_DESTDIR = yes###### If the plugin can be depended upon by other plugins, this code needs to be outsourced to###### 
      
       _dependencies.pri, where 
       
         is the name of the directory containing the###### plugin's sources.QTC_PLUGIN_NAME = DoxygenQTC_LIB_DEPENDS += \    # nothing here at this timeQTC_PLUGIN_DEPENDS += \    coreplugin \    cpptools \    cppeditor \    projectexplorer \    texteditorQTC_PLUGIN_RECOMMENDS += \    # optional plugin dependencies. nothing here at this time###### End _dependencies.pri contents ######include($$QTCREATOR_SOURCES/src/qtcreatorplugin.pri)DEFINES -= QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCIIDISTFILES += \    Doxygen.json.in
       
      
     
    
   

1. copy the generated lib /Users/taojiang/Library/Application Support/QtProject/Qt Creator/plugins/4.5.0/libDoxygen.dylib to /Users/taojiang/build-qtcreator-Desktop_Qt_5_10_0_clang_64bit-Release/bin/Qt Creator.app/Contents/PlugIns

2. open creator , about plugin

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