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I have checked the assembler options of GNU assembler as and I didn’t find an option to specify the output object file format. If I am using the following command
as -o foobar.o foobar.s
What object file format will I get?
The as manual says that “The GNU as can be configured to produce several alternative object file formats.” But how? How can I change it to a ELF format?
Many thanks.
On linux the output from gas is ELF already, it is unlikely you have a version which is building the old a.out format, or that you are using a cross compiler to say build to MachO or PE.