FYI: Unable to build -r501994 ports' lang/gcc8 on clang 8 based powerpc64 system (no -O1 use): "does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or ..."

[Mark Millard]

[It built with GNU ld (GNU Binutils) 2.32 as ld.]

On 2019-May-18, at 21:42, Mark Millard <marklmi at yahoo.com> wrote:

> On 2019-May-18, at 21:11, Mark Millard <marklmi at yahoo.com> wrote:
> 
>> This was in a poudriere bulk build on a head -r347549 based powerpc64
>> system with system clang 8 for cc and c++ and base/binutils
>> for ld. I was attempting a build with the -O1 changes disabled. (Note:
>> the system is self hosting for buildworld buildkernel via the clang 8
>> and base/binutils combination.)
>> 
>> So having issues with building lang/gcc8 is not limited  to gcc 4.2.1's
>> tool chain for powerpc64. (I've not yet tested -O1 use as the bulk build
>> still has lots of other things to build.)
>> 
>> . . .
>> c++: warning: argument unused during compilation: '-nopie' [-Wunused-command-line-argument]
>> /usr/bin/ld: libbackend.a(ipa-inline.o)(.text+0x540): sibling call optimization to `_ZN16function_summaryIP14ipa_fn_summaryE3getEP11cgraph_node' does not allow automatic multiple TOCs; recompile with 
>> -mminimal-toc or -fno-optimize-sibling-calls, or make `_ZN16function_summaryIP14ipa_fn_summaryE3getEP11cgraph_node' extern
>> /usr/bin/ld: libbackend.a(ipa-inline.o)(.text+0xa58): sibling call optimization to `_ZN16function_summaryIP14ipa_fn_summaryE3getEP11cgraph_node' does not allow automatic multiple TOCs; recompile with 
>> -mminimal-toc or -fno-optimize-sibling-calls, or make `_ZN16function_summaryIP14ipa_fn_summaryE3getEP11cgraph_node' extern
>> . . .
>> /usr/bin/ld: libbackend.a(ipa-inline.o)(.text+0x1150): sibling call optimization to `_ZN10hash_tableIN8hash_mapI8int_hashIiLi0ELin1EEP16ipa_call_summary21simple_hashmap_traitsI19default_hash_traitsIS2
>> _ES4_EE10hash_entryE11xcallocatorE19find_slot_with_hashERKij13insert_option' does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make `_ZN10hash_tab
>> leIN8hash_mapI8int_hashIiLi0ELin1EEP16ipa_call_summary21simple_hashmap_traitsI19default_hash_traitsIS2_ES4_EE10hash_entryE11xcallocatorE19find_slot_with_hashERKij13insert_option' extern
>> /usr/bin/ld: libbackend.a(ipa-inline.o)(.text+0x1224): sibling call optimization to `_ZN10hash_tableIN8hash_mapI8int_hashIiLi0ELin1EEP16ipa_call_summary21simple_hashmap_traitsI19default_hash_traitsIS2
>> _ES4_EE10hash_entryE11xcallocatorE19find_slot_with_hashERKij13insert_option' does not allow automatic multiple TOCs; recompile with -mminimal-toc or -fno-optimize-sibling-calls, or make `_ZN10hash_tab
>> leIN8hash_mapI8int_hashIiLi0ELin1EEP16ipa_call_summary21simple_hashmap_traitsI19default_hash_traitsIS2_ES4_EE10hash_entryE11xcallocatorE19find_slot_with_hashERKij13insert_option' extern
>> . . .
>> 
>> 
>> For reference . . .
>> 
>> # cc -v
>> FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0)
>> Target: powerpc64-unknown-freebsd13.0
>> Thread model: posix
>> InstalledDir: /usr/bin
>> 
>> # c++ -v
>> FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0)
>> Target: powerpc64-unknown-freebsd13.0
>> Thread model: posix
>> InstalledDir: /usr/bin
>> 
>> # ld -v
>> GNU ld (GNU Binutils) 2.32
>> 
>> 
>> I used:
>> 
>> # svnlite diff /usr/ports/lang/gcc8/ | more
>> Index: /usr/ports/lang/gcc8/Makefile
>> ===================================================================
>> --- /usr/ports/lang/gcc8/Makefile       (revision 501994)
>> +++ /usr/ports/lang/gcc8/Makefile       (working copy)
>> @@ -62,7 +62,7 @@
>> 
>> .elif ${ARCH} == powerpc64
>> CONFIGURE_ENV+=        UNAME_m="powerpc64"
>> -MAKE_ARGS+=    CFLAGS_FOR_TARGET="-O1" CXXFLAGS_FOR_TARGET="-O1" BOOT_CFLAGS="-O1" # PR235975
>> +#MAKE_ARGS+=   CFLAGS_FOR_TARGET="-O1" CXXFLAGS_FOR_TARGET="-O1" BOOT_CFLAGS="-O1" # PR235975
>> 
>> .elif ${ARCH} == powerpcspe
>> CONFIGURE_ARGS+=       --with-cpu=8548 --enable-e500_double --without-fp
>> @@ -80,7 +80,7 @@
>> CONFIGURE_ARGS+=--with-build-config=bootstrap-debug
>> ALL_TARGET=    bootstrap-lean
>> .endif
>> -INSTALL_TARGET=        install-strip
>> +#INSTALL_TARGET=       install-strip
>> .if ${UID} != 0
>> BINMODE=       755
>> .endif
>> 
> 
> I managed to not have poudriere using base/binutils but instead:
> 
> # /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin/ld -v
> GNU ld 2.17.50 [FreeBSD] 2007-07-03
> 
> cc and c++ were as they should have been:
> 
> # /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin/cc -v
> FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0)
> Target: powerpc64-unknown-freebsd13.0
> Thread model: posix
> InstalledDir: /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin
> 
> # /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin/c++ -v
> FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM 8.0.0)
> Target: powerpc64-unknown-freebsd13.0
> Thread model: posix
> InstalledDir: /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin
> 
> So I was not testing the tools combination that I thought/intended.


Sure enough, with the originally intended linker:

# /usr/obj/DESTDIRs/clang-powerpc64-installworld_altbinutils-poud/usr/bin/ld -v                                                                                                                  GNU ld (GNU Binutils) 2.32

lang/gcc8 then fine via poudriere bulk.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)