Product with property « type : "staticlibrary" » doesn't works while StaticLibrary works perfectly for property Android.ndk.appStl: "gnustl_shared"

I was thinking that both are the same :

Product

{     type : "staticlibrary" ;    Android.ndk.appStl: "gnustl_shared"     ... }

 

and :

 

StaticLibrary

{     Android.ndk.appStl: "gnustl_shared"     ... }

 

... but the first case trigger this error :

 /opt/Qt/Tools/QtCreator/share/qtcreator/qbs/share/qbs/modules/cpp/android-gcc.qbs:92: avertissement : File '/opt/android-ndk-r17b/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi/libgnustl_shared.so' does not exist.