Date: Sat, 11 Aug 2018 08:55:35 -0600 From: Warner Losh <imp@bsdimp.com> To: "freebsd-toolchain@FreeBSD.org" <freebsd-toolchain@freebsd.org>, Ed Maste <emaste@freebsd.org>, Dimitry Andric <dim@freebsd.org> Subject: Broken arm support in clang now? Message-ID: <CANCZdfpmDN-nAkViuEx-tKpPhOdRYX=xNu6s8E2o6F4xC2WPnA@mail.gmail.com>
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It looks like armv5 clang bogusly uses lld:
>From a 'make buildkernel' of the RT1310 kernel config:
cc -target arm-gnueabi-freebsd12.0
--sysroot=/usr/home/imp/obj/usr/home/imp/git/head/arm.arm/tmp
-B/usr/home/imp/obj/usr/home/imp/git/head/arm.arm/tmp/usr/bin -c -O -pipe
-g -nostdinc -I. -I/usr/home/imp/git/head/sys
-I/usr/home/imp/git/head/sys/contrib/ck/include
-I/usr/home/imp/git/head/sys/contrib/libfdt
-I/usr/home/imp/git/head/sys/gnu/dts/include -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -march=armv5te
-funwind-tables -ffreestanding -fwrapv -gdwarf-2 -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
-Wcast-qual -Wundef -Wno-pointer-sign -D__printf__=__freebsd_kprintf__
-Wmissing-include-dirs -fdiagnostics-show-option -Wno-unknown-pragmas
-Wno-error-tautological-compare -Wno-error-empty-body
-Wno-error-parentheses-equality -Wno-error-unused-function
-Wno-error-pointer-sign -Wno-error-shift-negative-value
-Wno-address-of-packed-member -mfpu=none -std=iso9899:1999 -Werror vers.c
linking kernel.full
ld: warning: lld uses extended branch encoding, no object with architecture
supporting feature detected.
ld: warning: lld may use movt/movw, no object with architecture supporting
feature detected.
text data bss dec hex filename
3448944 176776 655360 4281080 0x4152f8 kernel.full
Any clues on how I can track this down?
Warner
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