luajit: unwinder errors on 10.5.8

[barracuda156]

LINK      luajit
/opt/local/bin/gcc-mp-11  -L/opt/local/lib -Wl,-headerpad_max_install_names -arch ppc    -o luajit luajit.o libluajit.a -lm  
Undefined symbols:
  "__Unwind_SetGR", referenced from:
      _lj_err_unwind_dwarf in libluajit.a(ljamalg.o)
  "__Unwind_SetIP", referenced from:
      _err_unwind_jit in libluajit.a(ljamalg.o)
      _lj_err_unwind_dwarf in libluajit.a(ljamalg.o)
  "__Unwind_GetIP", referenced from:
      _err_unwind_jit in libluajit.a(ljamalg.o)
  "__Unwind_GetCFA", referenced from:
      _lj_err_unwind_dwarf in libluajit.a(ljamalg.o)
  "__Unwind_RaiseException", referenced from:
      _lj_err_throw in libluajit.a(ljamalg.o)
  "___register_frame", referenced from:
      _mcode_allocarea in libluajit.a(ljamalg.o)
  "__Unwind_DeleteException", referenced from:
      _lj_err_unwind_dwarf in libluajit.a(ljamalg.o)
  "___deregister_frame", referenced from:
      _lj_mcode_free in libluajit.a(ljamalg.o)
ld: symbol(s) not found
collect2: error: ld returned 1 exit status
make[2]: *** [luajit] Error 1

(Also identical failure on 10.6 PPC with gcc12.)

Assigning to myself, this unwinder issues should be solved.

16. S. Portfile has to blacklist gcc-4.0 too, I will add that later, once unwinder errors fixed.

[barracuda156]

Similar error but no solution: ​https://github.com/NavInfoNC/visual-wrk/issues/7

[barracuda156]

Adding configure.ldflags-append -lgcc_eh worked, as mentioned here: ​https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96217#c3

[kencu (Ken)]

this looks like another case where the build is trying to link c++ code using the C compiler to do it, and failing.

If you recall, when you link the code with the c++ compiler, all the needed extra libraries are added in automatically.