__cxa_call_terminate of gcc14 breaks linking to libc++/libc++abi

[barracuda156]

__cxa_call_terminate, added by gcc14 (?), does not exist in older versions of libc++abi (in particular, in the one built from LLVM-7.1.1 here, unless I messed something up with the build), which breaks builds of some ports. For example, ICU:

/opt/local/bin/g++-mp-14 -dynamiclib -dynamic -pipe -Os -stdlib=libc++ -arch ppc -W -Wall -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long -std=c++17    -fvisibility=hidden -Wl,-headerpad_max_install_names -arch ppc    -Wl,-compatibility_version -Wl,76 -Wl,-current_version -Wl,76.1 -install_name /opt/local/lib/libicui18n.76.dylib -o ../lib/libicui18n.76.1.dylib alphaindex.o anytrans.o astro.o basictz.o bocsu.o brktrans.o buddhcal.o calendar.o casetrn.o cecal.o chnsecal.o choicfmt.o coleitr.o coll.o collation.o collationbuilder.o collationcompare.o collationdata.o collationdatabuilder.o collationdatareader.o collationdatawriter.o collationfastlatin.o collationfastlatinbuilder.o collationfcd.o collationiterator.o collationkeys.o collationroot.o collationrootelements.o collationruleparser.o collationsets.o collationsettings.o collationtailoring.o collationweights.o compactdecimalformat.o coptccal.o cpdtrans.o csdetect.o csmatch.o csr2022.o csrecog.o csrmbcs.o csrsbcs.o csrucode.o csrutf8.o curramt.o currfmt.o currpinf.o currunit.o dangical.o datefmt.o dayperiodrules.o dcfmtsym.o decContext.o decNumber.o decimfmt.o displayoptions.o double-conversion-bignum-dtoa.o double-conversion-bignum.o double-conversion-cached-powers.o double-conversion-double-to-string.o double-conversion-fast-dtoa.o double-conversion-string-to-double.o double-conversion-strtod.o dtfmtsym.o dtitvfmt.o dtitvinf.o dtptngen.o dtrule.o erarules.o esctrn.o ethpccal.o fmtable.o fmtable_cnv.o format.o formatted_string_builder.o formattedval_iterimpl.o formattedval_sbimpl.o formattedvalue.o fphdlimp.o fpositer.o funcrepl.o gender.o gregocal.o gregoimp.o hebrwcal.o indiancal.o inputext.o islamcal.o iso8601cal.o japancal.o listformatter.o measfmt.o measunit.o measunit_extra.o measure.o msgfmt.o messageformat2.o messageformat2_arguments.o messageformat2_checker.o messageformat2_data_model.o messageformat2_errors.o messageformat2_evaluation.o messageformat2_formatter.o messageformat2_formattable.o messageformat2_function_registry.o messageformat2_parser.o messageformat2_serializer.o name2uni.o nfrs.o nfrule.o nfsubs.o nortrans.o nultrans.o number_affixutils.o number_asformat.o number_capi.o number_compact.o number_currencysymbols.o number_decimalquantity.o number_decimfmtprops.o number_fluent.o number_formatimpl.o number_grouping.o number_integerwidth.o number_longnames.o number_mapper.o number_modifiers.o number_multiplier.o number_notation.o number_output.o number_padding.o number_patternmodifier.o number_patternstring.o number_rounding.o number_scientific.o number_simple.o number_skeletons.o number_symbolswrapper.o number_usageprefs.o number_utils.o numfmt.o numparse_affixes.o numparse_compositions.o numparse_currency.o numparse_decimal.o numparse_impl.o numparse_parsednumber.o numparse_scientific.o numparse_symbols.o numparse_validators.o numrange_capi.o numrange_fluent.o numrange_impl.o numsys.o olsontz.o persncal.o pluralranges.o plurfmt.o plurrule.o quant.o quantityformatter.o rbnf.o rbt.o rbt_data.o rbt_pars.o rbt_rule.o rbt_set.o rbtz.o regexcmp.o regeximp.o regexst.o regextxt.o region.o reldatefmt.o reldtfmt.o rematch.o remtrans.o repattrn.o rulebasedcollator.o scientificnumberformatter.o scriptset.o search.o selfmt.o sharedbreakiterator.o simpletz.o smpdtfmt.o smpdtfst.o sortkey.o standardplural.o string_segment.o strmatch.o strrepl.o stsearch.o taiwncal.o timezone.o titletrn.o tmunit.o tmutamt.o tmutfmt.o tolowtrn.o toupptrn.o translit.o transreg.o tridpars.o tzfmt.o tzgnames.o tznames.o tznames_impl.o tzrule.o tztrans.o ucal.o ucln_in.o ucol.o ucol_res.o ucol_sit.o ucoleitr.o ucsdet.o udat.o udateintervalformat.o udatpg.o ufieldpositer.o uitercollationiterator.o ulistformatter.o ulocdata.o umsg.o unesctrn.o uni2name.o units_data.o units_complexconverter.o units_converter.o units_router.o unum.o unumsys.o upluralrules.o uregex.o uregexc.o uregion.o usearch.o uspoof.o uspoof_build.o uspoof_conf.o uspoof_impl.o utf16collationiterator.o utf8collationiterator.o utmscale.o utrans.o vtzone.o vzone.o windtfmt.o winnmfmt.o wintzimpl.o zonemeta.o zrule.o ztrans.o -L../lib -licuuc -L../stubdata -licudata -lpthread -lm 
Undefined symbols for architecture ppc:
  "___cxa_call_terminate", referenced from:
      icu_76::message2::data_model::SelectorKeys::Builder::add(icu_76::message2::data_model::Key&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::MFDataModel::Builder::addVariant(icu_76::message2::data_model::SelectorKeys&&, icu_76::message2::data_model::Pattern&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::data_model::Pattern::Builder::add(icu_76::UnicodeString&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::data_model::Pattern::Builder::add(icu_76::message2::data_model::Expression&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::MFDataModel::Builder::addSelector(icu_76::message2::data_model::Expression&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::data_model::Pattern::Builder::add(icu_76::message2::data_model::Markup&&, UErrorCode&) in messageformat2_data_model.o
      icu_76::message2::data_model::swap(icu_76::message2::data_model::PatternPart&, icu_76::message2::data_model::PatternPart&) in messageformat2_data_model.o
      ...
ld: symbol(s) not found for architecture ppc
collect2: error: ld returned 1 exit status
gnumake[1]: *** [../lib/libicui18n.76.1.dylib] Error 1

Also the same error with another port on x86: https://trac.macports.org/ticket/70341

Is there a way to solve it? I wanted to see how usable is libc++ on powerpc, but with a broken ICU it is a no-go.

[barracuda156]

FreeBSD did this in their runtime library: https://lists.freebsd.org/archives/dev-commits-src-all/2024-August/044538.html

Update. I guess what we need is to backport this: https://lists.llvm.org/pipermail/libcxx-commits/2024-June/085127.html

[barracuda156]

Yeah, that worked. Sorry for an unnecessary issue :)