How to set MicroBlaze "Archiver flags" through Xilinx Software Command Line?
If you type "sdk configapp -help" it will list options bellow: (there is no option for setting "archiver flags")
assembler-flags build-config compiler-misc compiler-optimization define-compiler-symbols include-path libraries library-search-path linker-misc linker-script undef-compiler-symbols
I think that there is no support to change the archiver flags from the command line tool. I will recheck it internally but no all the options available within the GUI are available right now in XSCT.