Re: __builtin_expect function isn't available in gcc below version 3

Hello,

Le 01/03/2026 à 04:09, ‘Richard Beckmann’ via lua-l a écrit :

>> In this case, just compile Lua with -DLUA_NOBUILTIN.
> Forgot to mention. I and the Haiku developer Begasus already tried `-DLUA_NOBUILTIN` and it wasn't good enough for us. `-DLUA_NOBUILTIN` works for compiling Lua but not when using headers to compile Lua/C modules with LuaRocks. LuaRocks doesn't issue `-DLUA_NOBUILTIN` when compiling Lua/C modules. So, to make building Lua/C modules with LuaRocks work as well, we were forced to patch the headers.

Did you try to set |LUA_NOBUILTIN| with |CFLAGS|? e.g.:

|CFLAGS="-DLUA_NOBUILTIN" luarocks install ... |

> Sent with Proton Mail secure email.
>
> On Saturday, February 28th, 2026 at 10:28 AM, Luiz Henrique de Figueiredo<[email protected]> wrote:
>
>>> When compiling Lua 5.4.7 for Haiku targeting x86 32 bit using gcc 2 I encounter that '__builtin_expect' function isn't available.
>> In this case, just compile Lua with -DLUA_NOBUILTIN.
>>
>> Thanks for the report and patch.
>>
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>>
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