[MacPorts] #71164: mpdecimal @4.0.0_1: Build failure on legacy OS X due to undefined symbols

[MacPorts]

#71164: mpdecimal @4.0.0_1: Build failure on legacy OS X due to undefined symbols
---------------------+-------------------------
 Reporter:  0xbf00   |      Owner:  Schamschula
     Type:  defect   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.10.2
 Keywords:  leopard  |       Port:  mpdecimal
---------------------+-------------------------
 While trying to install {{{python313}}} on an ancient Mac OS X 10.5
 Leopard, the dependency {{{mpdecimal}}} fails to build.

 According to the build logs, {{{clang}}} complains about undefined
 symbols, though checking the source code, these symbols should exist.

 {{{
 :info:build /opt/local/bin/clang++-mp-11 -pthread -L../libmpdec
 -dynamiclib -fPIC -install_name /opt/local/lib/libmpdec++.4.dylib
 -compatibility_version 4.0 -current_version 4.0.0 -o
 libmpdec++.4.0.0.dylib .objs/decimal.o -lmpdec -lm
 :info:build Undefined symbols for architecture i386:
 :info:build   "std::basic_ostream<char, std::char_traits<char> >&
 std::__ostream_insert<char, std::char_traits<char>
 >(std::basic_ostream<char, std::char_traits<char> >&, char const*, int)",
 referenced from:
 :info:build       decimal::Context::repr() const in decimal.o
 :info:build       decimal::operator<<(std::ostream&, decimal::Context
 const&) in decimal.o
 :info:build       decimal::operator<<(std::ostream&, decimal::Decimal
 const&) in decimal.o
 :info:build   "std::runtime_error::runtime_error(char const*)", referenced
 from:
 :info:build       decimal::Context::raiseit(unsigned int) in decimal.o
 :info:build       __ZN7decimal11MallocErrorCI1St13runtime_errorEPKc in
 decimal.o
 :info:build       decimal::Context::repr() const in decimal.o
 :info:build       decimal::Decimal::exact(char const*, decimal::Context&)
 in decimal.o
 :info:build       __ZN7decimal10ValueErrorCI1St13runtime_errorEPKc in
 decimal.o
 :info:build       decimal::Decimal::ln10(long long, decimal::Context&) in
 decimal.o
 }}}

 Maybe another case of system-supplied headers interfering with building?

-- 
Ticket URL: <https://trac.macports.org/ticket/71164>
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