Well ive managed to get the ihx files to burn onto the chip through the same programs on linux i.e. I used wine to get EzUploader running and also had to Hexsort the ihx files for EzUploader to use them correctly.

Now that thats done, i couldnt get to run any program on the chip. This is probably because SDCC needs some AT89C51 specific information for compiling in the form of command line switches or so. I couldnt find any such thing in the manual for SDCC. Could anyone hint me on what exactly does SDCC need to be manually fed which Keil does without asking.