Re: -r319936 and -r319991 TARGET_ARCH=powerpc via clang: boot1.chrp/boot1.c:(.text+0x14b8): undefined reference to `__udivdi3' (boot1.o: In function `fsread_size') [powerpc64 too]

From: Mark Millard <markmi_at_dsl-only.net>
Date: Fri, 16 Jun 2017 13:18:47 -0700
[Top posted note: I have submitted bugzilla 220024 for this
powerpc64 and powerpc issue. It has also been reproduced
when using /usr/local/powerpc64-freebsd/bin/ for binutils
for a powerpc64 buildworld attempt.]

On 2017-Jun-15, at 11:32 PM, Mark Millard <markmi at dsl-only.net> wrote:

[powerpc64 has the same problem.]

On 2017-Jun-15, at 9:34 PM, Mark Millard <markmi_at_dsl-only.net> wrote:

> [I should have listed more about my build context for clang.]
> 
> On 2017-Jun-15, at 9:20 PM, Mark Millard <markmi at dsl-only.net> wrote:
> 
>> [A gcc 4.2.1 based buildworld buildkernel did not have this problem.]
>> 
>> On 2017-Jun-15, at 5:34 PM, Mark Millard <markmi at dsl-only.net> wrote:
>> 
>>> 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).
>> 
>> I tried a gcc 4.2.1 buildworld buildkernel and it
>> completed fine.
>> 
>> The __udivdi3 problem is clang toolchain specific.
> 
> Clang based build-context details:
> 
> # more ~/sys_build_scripts.amd64-host/make_powerpcvtsc_nodebug_clang_bootstrap-amd64-host.sh 
> kldload -n filemon && \
> script ~/sys_typescripts/typescript_make_powerpcvtsc_nodebug_clang_bootstrap-amd64-host-$(date +%Y-%m-%d:%H:%M:%S) \
> env __MAKE_CONF="/root/src.configs/make.conf" SRCCONF="/dev/null" SRC_ENV_CONF="/root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host" \
> WITH_META_MODE=yes \
> MAKEOBJDIRPREFIX="/usr/obj/powerpcvtsc_clang" \
> make $*
> 
> # more /root/src.configs/src.conf.powerpc-clang-bootstrap.amd64-host
> TO_TYPE=powerpc
> #
> KERNCONF=GENERICvtsc-NODBG
> TARGET=${TO_TYPE}
> .if ${.MAKE.LEVEL} == 0
> TARGET_ARCH=${TO_TYPE}
> .export TARGET_ARCH
> .endif
> #
> WITH_CROSS_COMPILER=
> WITHOUT_SYSTEM_COMPILER=
> #
> WITH_LIBCPLUSPLUS=
> WITH_BINUTILS_BOOTSTRAP=
> WITH_ELFTOOLCHAIN_BOOTSTRAP=
> WITH_CLANG_BOOTSTRAP=
> WITH_CLANG=
> WITH_CLANG_IS_CC=
> WITH_CLANG_FULL=
> WITH_CLANG_EXTRAS=
> WITH_LLD=
> # lldb requires missing atomic 8-byte operations for powerpc (non-64)
> WITHOUT_LLDB=
> #
> WITH_BOOT=
> WITHOUT_LIB32=
> #
> WITHOUT_GCC_BOOTSTRAP=
> WITHOUT_GCC=
> WITHOUT_GCC_IS_CC=
> WITHOUT_GNUCXX=
> #
> NO_WERROR=
> #
> # Use WERROR to avoid stopping at the likes of:
> # error: implicit conversion from 'int' to 'int8_t' (aka 'signed char') changes value from 128 to -128 [-Werror,-Wconstant-conversion]
> WERROR=
> MALLOC_PRODUCTION=
> #
> WITH_REPRODUCIBLE_BUILD=
> WITH_DEBUG_FILES=
> 
> So the system binutils tools are in used.
> 
> Even though I build lld, last I tried lld could not
> be used so it is not the linker used by the above.

powerpc64 has the same buildworld problem for
clang based builds:

--- 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_usr.sbin ---
Building /usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/usr/src/usr.sbin/fstyp/ext2fs.o
--- 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/powerpc64vtsc_clang/powerpc.powerpc64/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf.meta'


# more /usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf.meta
# Meta data file /usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/usr/src/sys/boot/powerpc/boot1.chrp/boot1.elf.meta
CMD cc -target powerpc64-unknown-freebsd12.0 --sysroot=/usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/usr/src/tmp -B/usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/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 -m32 -mcpu=powerpc -m32 -mcpu=powerpc -std=gnu99 -Qunused-arguments -nostdlib -static -Wl,-N -Wl,-m -Wl,elf32ppc_fbsd -Wl,-m -Wl,elf32ppc_fbsd -o boot1.elf boot1.o ashldi3.o syncicache.o  
CWD /usr/obj/powerpc64vtsc_clang/powerpc.powerpc64/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


# more ~/sys_build_scripts.amd64-host/make_powerpc64vtsc_nodebug_clang-amd64-host.sh
kldload -n filemon && \
script ~/sys_typescripts/typescript_make_powerpc64vtsc_nodebug_clang-amd64-host-$(date +%Y-%m-%d:%H:%M:%S) \
env __MAKE_CONF="/root/src.configs/make.conf" SRCCONF="/dev/null" SRC_ENV_CONF="/root/src.configs/src.conf.powerpc64-clang-bootstrap.amd64-host" \
WITH_META_MODE=yes \
MAKEOBJDIRPREFIX="/usr/obj/powerpc64vtsc_clang" \
make $*

# more /root/src.configs/src.conf.powerpc64-clang-bootstrap.amd64-host
TO_TYPE=powerpc64
#
KERNCONF=GENERIC64vtsc-NODBG
TARGET=powerpc
.if ${.MAKE.LEVEL} == 0
TARGET_ARCH=${TO_TYPE}
.export TARGET_ARCH
.endif
#
WITH_CROSS_COMPILER=
WITHOUT_SYSTEM_COMPILER=
#
WITH_LIBCPLUSPLUS=
WITH_BINUTILS_BOOTSTRAP=
WITH_ELFTOOLCHAIN_BOOTSTRAP=
WITH_CLANG_BOOTSTRAP=
WITH_CLANG=
WITH_CLANG_IS_CC=
WITH_CLANG_FULL=
WITH_CLANG_EXTRAS=
WITH_LLD=
WITH_LLDB=
#
WITH_BOOT=
WITH_LIB32=
#
WITHOUT_GCC_BOOTSTRAP=
WITHOUT_GCC=
WITHOUT_GCC_IS_CC=
WITHOUT_GNUCXX=
#
NO_WERROR=
# buildkernel fails for sign mismatch on pointed-to types.
WERROR=
MALLOC_PRODUCTION=
#
WITH_REPRODUCIBLE_BUILD=
WITH_DEBUG_FILES=


===
Mark Millard
markmi at dsl-only.net
Received on Fri Jun 16 2017 - 18:18:51 UTC

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