-r319936 and -r319991 TARGET_ARCH=powerpc via clang: boot1.chrp/boot1.c:(.text+0x14b8): undefined reference to `__udivdi3' (boot1.o: In function `fsread_size')

[Mark Millard]

Context: amd64 -> powerpc cross build of -r319936
(one of my usual clang-based experiments):

--- all_subdir_sys ---
Building /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf
--- boot1.elf ---
boot1.o: In function `fsread_size':
/usr/src/sys/boot/powerpc/boot1.chrp/boot1.c:(.text+0x14b8): undefined reference to `__udivdi3'
/usr/src/sys/boot/powerpc/boot1.chrp/boot1.c:(.text+0x1508): undefined reference to `__udivdi3'
cc: error: linker command failed with exit code 1 (use -v to see invocation)
--- all_subdir_lib ---
Building /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/lib/msun/s_remquo.po
--- all_subdir_sys ---
*** [boot1.elf] Error code 1

make[6]: stopped in /usr/src/sys/boot/powerpc/boot1.chrp
.ERROR_TARGET='boot1.elf'
.ERROR_META_FILE='/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf.meta'


# Meta data file /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf.meta
CMD cc -target powerpc-unknown-freebsd12.0 --sysroot=/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp -B/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/tmp/usr/bin -ffreestanding -msoft-float -I/usr/src/sys/boot/powerpc/boot1.chrp/../../common -I/usr/src/sys/boot/powerpc/boot1.chrp/../../../ -D_STANDALONE -std=gnu99 -Qunused-arguments -nostdlib -static -Wl,-N -o boot1.elf boot1.o ashldi3.o syncicache.o  
CWD /usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/boot/powerpc/boot1.chrp
TARGET boot1.elf
-- command output --
boot1.o: In function `fsread_size':
/usr/src/sys/boot/powerpc/boot1.chrp/boot1.c:(.text+0x14b8): undefined reference to `__udivdi3'
/usr/src/sys/boot/powerpc/boot1.chrp/boot1.c:(.text+0x1508): undefined reference to `__udivdi3'
cc: error: linker command failed with exit code 1 (use -v to see invocation)
*** Error code 1

Note: This was -j16 for the build.

I updated /usr/src and amd64 to -r319991 and then
retried cross building for powerpc: same result.


Note: I'd frozen at -r317820 until this update. Back then
I could buildworld and buildkernel via clang (although
I could not boot the clang-based kernel and so had to
build a gcc 4.2.1 based one and use it).



===
Mark Millard
markmi at dsl-only.net