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Date: Thu, 11 Nov 2021 06:46:30 +1100
From: Matt Andrews <mattandrews@...il.com>
To: Rich Felker <dalias@...c.org>
Cc: musl@...ts.openwall.com
Subject: Re: Cross compiling with LLVM/clang
On Thu, Nov 11, 2021 at 3:11 AM Rich Felker <dalias@...c.org> wrote:
> As far as I can tell you're not invoking configure to cross compile.
> You told it the target (note: this should really be called host but it
> doesn't matter) is arm but you're invoking the compiler as "clang" so
> it will just be whatever clang's default target is (probably x86_64).
>
> If you want to cross compile, you need something like
> CC="/usr/lib/llvm-13/bin/clang --target=armv7-a" and you also need to
> have a suitable compiler-rt for arm available.
>
> We should probably do something to detect this kind of breakage
> earlier than at long double type mismatch.
>
> Rich
>
Thanks Rich, this worked. I actually put "--target=armv7a-linux-eabihf"
into CFLAGS. I had done that at some earlier stage, but it caused another
problem so I removed it.
Now for the job of cross compiling compiler-rt...
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