[MacPorts] #70341: g++ fails to compile when -libstd=libc++ is set

[MacPorts]

#70341: g++ fails to compile when -libstd=libc++ is set
--------------------------------+--------------------
  Reporter:  mouse07410         |      Owner:  (none)
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  gcc12 gcc13 gcc14  |
--------------------------------+--------------------

Comment (by barracuda156):

 Replying to [comment:25 mouse07410]:
 > In general, I do constrain myself to building with Clang only. Usually
 Xcode Clang, occasionally with Macports Clang. Xcode GCC has been nothing
 for a long time, so I don't even check it now to see if it improved at
 all.
 >
 > Thus, most if not all of the C++ libraries on my systems are libc++
 compatible, not stdc++. So, for those thankfully rare cases that I need to
 use GCC, it greatly improves usability and usefulness if it can produce
 libc++ compatible binaries.
 >
 > Regarding Xcode having nothing to do with our libc++ support, here's
 what the upstream got to say:
 >
 > The libc++ headers include some of the SDK headers. When updating XCode
 you get new (more recent) SDK headers, which should (apparently) now
 include declarations for quick_exit and friends.
 >
 > Re. inconsistencies - so far, after applying the relevant patches to the
 header files, it's more or less smooth. Except for one weird problem ;-0
 > that I'm having linking Crypto++ library:
 > {{{
 > Undefined symbols for architecture x86_64:
 >   "___cxa_call_terminate", referenced from:
 >       CryptoPP::LazyPutter::~LazyPutter() in asn.o
 >       CryptoPP::LazyPutter::~LazyPutter() in asn.o
 >       CryptoPP::DERSequenceEncoder::~DERSequenceEncoder() in asn.o
 >       non-virtual thunk to
 CryptoPP::DERSequenceEncoder::~DERSequenceEncoder() in asn.o
 >       CryptoPP::DERSequenceEncoder::~DERSequenceEncoder() in asn.o
 >       non-virtual thunk to
 CryptoPP::DERSequenceEncoder::~DERSequenceEncoder() in asn.o
 >       CryptoPP::BERSequenceDecoder::~BERSequenceDecoder() in asn.o
 >       ...
 > ld: symbol(s) not found for architecture x86_64
 > collect2: error: ld returned 1 exit status
 > }}}

 I got this error with `icu` now:

 {{{
 /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
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/70341#comment:28>
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