[cfe-dev] Compiling xv6 with Clang

[David Blaikie via cfe-dev]

Hard to say without more info - it's possible that Clang doesn't produce as
compact code as GCC in some cases. You can try compiling with optimization
modes that prioritize code size: -Os and -Oz (one of them is more
agrgessive, I forget which)

On Sun, Nov 4, 2018 at 3:30 AM Ahmad Nouralizadeh Khorrami via cfe-dev <
cfe-dev at lists.llvm.org> wrote:

> Hi.
> I tried to compile xv6 (a 10000 line teaching operating system from MIT)
> with Clang instead of GCC, but it led to an error. The compiled bootblock
> was larger than 1 sector (i.e., 512 bytes). Should I change the compiler
> options? How?
> Thanks!
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