Date: Sat, 25 Sep 2010 14:04:05 +0200 From: Dimitry Andric <dim@FreeBSD.org> To: Mark Tinguely <marktinguely@gmail.com> Cc: current@freebsd.org Subject: Re: Clang cross builds world Message-ID: <4C9DE535.3060809@FreeBSD.org> In-Reply-To: <4C9D4CAF.3070508@gmail.com> References: <4C99A53E.7060707@FreeBSD.org> <AANLkTi=_ZpYZ7XwHJOYuRMOFCGebRwD=YEYORKnMmC0s@mail.gmail.com> <4C9A32B8.60204@kkip.pl> <4C9A6A38.4080307@freebsd.org> <4C9A7203.8010701@kkip.pl> <20100923065134.GA31455@freebsd.org> <4C9B3207.2070302@kkip.pl> <4C9B383A.6080008@FreeBSD.org> <4C9B38E2.7010403@kkip.pl> <4C9B6804.3070102@FreeBSD.org> <4C9D4CAF.3070508@gmail.com>
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On 2010-09-25 03:13, Mark Tinguely wrote: > I was inspired by the clang build world topic to try a cross build world > of ARM from a i386 computer. > > I use the build command: > > make TARGET_ARCH=arm TARGET_CPUTYPE=xscale buildworld > (I tried an "TARGET_CPUTYPE=cortex-a8" once also, I got the same errors > below). > > /etc/src.conf is taken from the FreeBSD clang web page,. > /etc/make.conf has perl version strings. > > The cross tools build stage apparently makes an i386 compiler: > /usr/obj/arm.arm/usr/src/tmp/usr/bin/clang -### > FreeBSD clang version 2.8 (branches/release_28 114020) 20100917 > Target: i386-undermydesk-freebsd9.0 > Thread model: posix > > When the library build stage begins, the assembler complains about the > unknown "--32" option from clang. I know the "--32" options is a i386 > target add-on option. Removing "--32" from the command line with a > script shim, and sure enough clang is generating i386 assembly code. > > I know the clang and ARM is not tested nor supported. I am just looking > for some clang cross architecture compiling wisdom. Clang is not yet ready for use as a cross-compiler, although support for it should be relatively easy to add. This is still being worked on upstream. See also this thread: http://lists.cs.uiuc.edu/pipermail/cfe-dev/2010-September/thread.html#11192 and this page (a more long term project): http://clang.llvm.org/UniversalDriver.html
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