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Date: Mon, 11 Oct 2021 00:43:46 +0200
From: Quentin Rameau <quinq@fifth.space>
To: musl@lists.openwall.com
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Subject: Re: [musl] Newbie cross compiling with LLVM

> Hello everyone,

Hi Matt,

> I'm trying to cross compile from Ubuntu 20.04 to armv7a-linux-musleabihf
> using LLVM. Configure looks like this
> 
> ./configure \
> --prefix=$VECX/usr \
> --syslibdir=$VECX/lib \
> --target=armv7a-linux-eabihf \
> CC=/usr/lib/llvm-13/bin/clang \
> CFLAGS="--target=armv7a-linux-eabihf -mcpu=cortex-a8"
> 
> Then
> 
> make && make install
> 
> The compilation fails with the following
> 
> make: armv7a-linux-eabihf-ar: Command not found
> make: *** [Makefile:167: lib/libc.a] Error 127
> 
> It's looking for an archiver from a cross compiler toolchain, but should be
> using llvm-ar.
> 
> Which configure options should I use to get LLVM to cross compile
> successfully?

Have try with setting passing AR=clang-ar?