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Updated README.md
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@crozone
crozone committed Aug 1, 2018
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Expand Up @@ -95,9 +95,12 @@ To build the project without all of the above instructions introduced with SSE2,

`CFLAGS=-DNOSSE2 make`

This flag is automatically enabled if the `__SSE__` flag is present but `__SSE2__` is absent.
`NOSSE2` is automatically enabled if the `__SSE__` flag is present but `__SSE2__` is absent.
This means `NOSSE2` shouldn't need to be manually specified when compiling on Clang or GCC on non-SSE2 processors.

On MSC, `NOSSE2` is automatically enabled if the `_M_IX86_FP` flag is set to `1` (indicating SSE support, but no SSE2 support).
MSC will set this by default for all x86 processors.

#### 'Target specific option mismatch' error

Some 32-bit versions of gcc (e.g. the version used in Ubuntu 14.04) may show the following error while compiling the PoC:
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