[MacPorts] #42088: pgf to 3.0.0

[MacPorts]

#42088: pgf to 3.0.0
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  Reporter:  snc@…   |      Owner:  macports-tickets@…
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  pgf     |
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Comment (by egall@…):

 Replying to [comment:8 mojca@…]:
 > Btw: you don't need any `main` function in a library. All that's missing
 is probably a `-shared` flag during compilation. After the few additional
 patches that I submitted I end up with a different error though:
 > {{{
 > /usr/bin/clang -Os -arch x86_64 -O2 -Wall -I/opt/local/include
 -I../../../..  -shared -L/opt/local/lib -Wl,-headerpad_max_install_names
 -llua \
 >        \
 >       -o SimpleDemoCPlusPlus.so \
 >       SimpleDemoCPlusPlus.o ../../interface/c/InterfaceFromC++.o
 ../../interface/c/InterfaceFromC.o
 > Undefined symbols for architecture x86_64:
 >   "std::terminate()", referenced from:
 >       FastLayout::declare(scripting::script) in SimpleDemoCPlusPlus.o
 >   "vtable for __cxxabiv1::__class_type_info", referenced from:
 >       typeinfo for scripting::declarations in SimpleDemoCPlusPlus.o
 >       typeinfo for scripting::runner in SimpleDemoCPlusPlus.o
 >   NOTE: a missing vtable usually means the first non-inline virtual
 member function has no definition.
 >   "vtable for __cxxabiv1::__vmi_class_type_info", referenced from:
 >       typeinfo for FastLayout in SimpleDemoCPlusPlus.o
 >   NOTE: a missing vtable usually means the first non-inline virtual
 member function has no definition.
 >   "operator delete(void*)", referenced from:
 >       FastLayout::~FastLayout() in SimpleDemoCPlusPlus.o
 >       non-virtual thunk to FastLayout::~FastLayout() in
 SimpleDemoCPlusPlus.o
 >   "operator new(unsigned long)", referenced from:
 >       _luaopen_pgf_gd_examples_c_SimpleDemoCPlusPlus in
 SimpleDemoCPlusPlus.o
 >   "___gxx_personality_v0", referenced from:
 >       FastLayout::declare(scripting::script) in SimpleDemoCPlusPlus.o
 >       Dwarf Exception Unwind Info (__eh_frame) in SimpleDemoCPlusPlus.o
 > ld: symbol(s) not found for architecture x86_64
 > clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 > }}}

 Looks like it needs to be told which c++ library to use for a standard c++
 library. Either that or it needs some compiler blacklisting. Although it
 looks like by the filename that this is just a demo, so maybe demos could
 be skipped being built...

-- 
Ticket URL: <https://trac.macports.org/ticket/42088#comment:9>
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