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Re: [Tinycc-devel] macOS M1 is broken since last Grischka commit

From: grischka
Subject: Re: [Tinycc-devel] macOS M1 is broken since last Grischka commit
Date: Tue, 27 Jul 2021 12:41:46 +0200
User-agent: Thunderbird (Windows/20090812)

Christian JULLIEN wrote:
Grischka, you last set of commits breaks macOS M1 port (see make -k test
log in attachment).

Do you test your macOS changes on a real M1 machine? If you like and if
you don't have a M1 machine, I'll be glad to test your patches before
they go to mob.
Better if you create a macos-M1 branch to experiment changes which is
then merged in mod if nothing gets wrong.

Well according to one of your recent commits
#if defined(TCC_TARGET_MACHO) && defined(TCC_TARGET_X86_64)
                /* Special case for Rosetta to handle --cpu=x86_64 on macOS */
                else if (sizeof(double) == sizeof(long double))
                    memcpy(ptr, &vtop->c.ld, sizeof(double));
I was concluding that long doubles are just doubles on macos-x86_64.

If that is not the case (as the test results suggest) then I probably
was confused by what these lines were trying to say.

I still have no idea, actually.

Anyway, obviously setting TCC_USING_DOUBLE_FOR_LDOUBLE for osx-x86_64 was
a mistake but it might still apply to macos-arm64 eventually (according to

--- grischka


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