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Why linux executable(a.out) doesnt run on windows(.exe) directly?
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Dear all,
Why do i need to recompile the code?
Where as the X86 the architecture is same??
The final instruction are also going to be same right???
I assume there must be some difference between windows and linux executable handling in the sense of program loading (loader) but can some expert put some more highlight on this Please..
Thanks
Sirius..
Why do i need to recompile the code?
Where as the X86 the architecture is same??
The final instruction are also going to be same right???
I assume there must be some difference between windows and linux executable handling in the sense of program loading (loader) but can some expert put some more highlight on this Please..
Thanks
Sirius..
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First, the program communicates with the operating system differently. To perform input and output, it must talk to the OS with a system call, using a particular protocol, and they use different protocols. Second, the libraries are different. Linux programs expect libraries with functions like printf and whatnot to be in particular places; Windows programs expect them somewhere else. Third, the filesystem and arrangement of where things are stored is different. Fourth, the executable file format is different. The Linux procedure which launches programs expects executable files to be in a particular format (or one of a set of formats?). The .exe file format(s?) is (are?) different. The general scheme of how GUI output is performed is different. The notion of processes is different. And on and on and on.
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That's because when you provide Chinese instructions to an OS that understands only French it won't understand. 
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Originally Posted by Rashakil Fol 
First, the program communicates with the operating system differently. To perform input and output, it must talk to the OS with a system call, using a particular protocol, and they use different protocols. Second, the libraries are different. Linux programs expect libraries with functions like printf and whatnot to be in particular places; Windows programs expect them somewhere else. Third, the filesystem and arrangement of where things are stored is different. Fourth, the executable file format is different. The Linux procedure which launches programs expects executable files to be in a particular format (or one of a set of formats?). The .exe file format(s?) is (are?) different. The general scheme of how GUI output is performed is different. The notion of processes is different. And on and on and on.
just for a little bit of clarity... does it mean that loader which loads the program is actually OS specific (as it deals with actual allocation of memory and pysical address mapping for program and providing program counter to processor ) and
linker OS-independant.. if not what OS - Dependant information linker provides in ELF ( executable of linux?)
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