QT creator.Pro file adds the corresponding library according to the kit

background

I made a double version before ffmpeg, Thinking about ubuntu Run up , No problem, compile and run in Arm Development board
Cross compilation ffmpeg+x264+x265 （x86、arm-linux Dual version ） Close test effectively

Because the libraries of the two versions are different ,Qt Creator It's troublesome to switch when compiling
Think about configuring .pro Files make it possible to build according to the current kit To select the corresponding library

To configure Build

The author has two kit, One is x86_64, One is arm

Find this place , add to Additional parameters , For this arm kit Add a macro definition "DEFINES+=PLATFORM_ARM"

Empathy , For another x86 kit Add another macro definition "DEFINES+=PLATFORM_X86"

modify .pro file

if(contains(DEFINES,PLATFORM_X86)){
    
    message("compile for x86")
    INCLUDEPATH += xxxxxxx
    LIBS += xxxxxxx
}else{
    
    message("compile for arm") 
    INCLUDEPATH += xxxxxxx
    LIBS += xxxxxxx    
}   

That is to add one if sentence , According to the macro definition Alias Judge the currently built kit , Then choose to add the corresponding library

Conclusion

Very practical , Remember briefly