libstdcxx 4.8.1 fails to build on PPC Tiger because of undefined symbols

[ballapete (Peter "Pete" Dyballa)]

/opt/local/bin/g++-apple-4.2 -arch ppc   -pipe -Os -DIN_GCC   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H -L/opt/local/lib -Wl,-headerpad_max_install_names -o cc1 c/c-lang.o c-family/stub-objc.o attribs.o c/c-errors.o c/c-decl.o c/c-typeck.o c/c-convert.o c/c-aux-info.o c/c-objc-common.o c/c-parser.o c-family/c-common.o c-family/c-cppbuiltin.o c-family/c-dump.o c-family/c-format.o c-family/c-gimplify.o c-family/c-lex.o c-family/c-omp.o c-family/c-opts.o c-family/c-pch.o c-family/c-ppoutput.o c-family/c-pragma.o c-family/c-pretty-print.o c-family/c-semantics.o c-family/c-ada-spec.o tree-mudflap.o darwin-c.o rs6000-c.o \
  cc1-checksum.o libbackend.a main.o  libcommon-target.a libcommon.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a ../libcpp/libcpp.a  -liconv ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a  -L/opt/local/lib -lcloog-isl  -lisl -L/opt/local/lib -L/opt/local/lib -L/opt/local/lib -lmpc -lmpfr -lgmp   -lz
ld: warning: object file compiled with -mlong-branch which is no longer needed. To remove this warning, recompile without -mlong-branch: /usr/lib/crt1.o
ld: warning: object file compiled with -mlong-branch which is no longer needed. To remove this warning, recompile without -mlong-branch: /opt/local/lib/apple-gcc42/gcc/powerpc-apple-darwin8/4.2.1/crt3.o
Undefined symbols:
  "__Unwind_GetIPInfo", referenced from:
      _unwind in libbacktrace.a(backtrace.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [cc1] Error 1
make[2]: Leaving directory `/opt/local/var/macports/build/_opt_mports_trunk_dports_lang_gcc48/libstdcxx/work/build/gcc'
make[1]: *** [all-gcc] Error 2
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_mports_trunk_dports_lang_gcc48/libstdcxx/work/build'
make: *** [all] Error 2
make: Leaving directory `/opt/local/var/macports/build/_opt_mports_trunk_dports_lang_gcc48/libstdcxx/work/build'
Command failed:  cd "/opt/local/var/macports/build/_opt_mports_trunk_dports_lang_gcc48/libstdcxx/work/build" && /usr/bin/make -w all 
Exit code: 2
Error: org.macports.build for port libstdcxx returned: command execution failed
DEBUG: Error code: CHILDSTATUS 4827 2
DEBUG: Backtrace: command execution failed

[ballapete (Peter "Pete" Dyballa)]

main.log

[cooljeanius (Eric Gallager)]

OP, what does port installed libunwind-headers return for you?

[cooljeanius (Eric Gallager)]

Cc Me!

[ballapete (Peter "Pete" Dyballa)]

Replying to egall@…:

OP, what does port installed libunwind-headers return for you?

libunwind-headers @35.1_0 (active)

[ballapete (Peter "Pete" Dyballa)]

Replying to egall@…:

OP, what does port installed libunwind-headers return for you?

I made an experiment and removed these header files. The build fails with exactly the same error:

/opt/local/bin/g++-apple-4.2 -arch ppc   -pipe -Os -DIN_GCC   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H -L/opt/local/lib -Wl,-headerpad_max_install_names -o cc1 c/c-lang.o c-family/stub-objc.o attribs.o c/c-errors.o c/c-decl.o c/c-typeck.o c/c-convert.o c/c-aux-info.o c/c-objc-common.o c/c-parser.o c-family/c-common.o c-family/c-cppbuiltin.o c-family/c-dump.o c-family/c-format.o c-family/c-gimplify.o c-family/c-lex.o c-family/c-omp.o c-family/c-opts.o c-family/c-pch.o c-family/c-ppoutput.o c-family/c-pragma.o c-family/c-pretty-print.o c-family/c-semantics.o c-family/c-ada-spec.o tree-mudflap.o darwin-c.o rs6000-c.o \
  cc1-checksum.o libbackend.a main.o  libcommon-target.a libcommon.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a libcommon.a ../libcpp/libcpp.a  -liconv ../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a  -L/opt/local/lib -lcloog-isl  -lisl -L/opt/local/lib -L/opt/local/lib -L/opt/local/lib -lmpc -lmpfr -lgmp   -lz
ld: warning: object file compiled with -mlong-branch which is no longer needed. To remove this warning, recompile without -mlong-branch: /usr/lib/crt1.o
ld: warning: object file compiled with -mlong-branch which is no longer needed. To remove this warning, recompile without -mlong-branch: /opt/local/lib/apple-gcc42/gcc/powerpc-apple-darwin8/4.2.1/crt3.o
Undefined symbols:
  "__Unwind_GetIPInfo", referenced from:
      _unwind in libbacktrace.a(backtrace.o)
ld: symbol(s) not found

I also made a comparison of the two main.log files – there are no real differences, just dates.

The documentation of libbacktrace states:

As of September 2012, libbacktrace only supports ELF executables with
DWARF debugging information.  The library is written to make it
straightforward to add support for other object file and debugging
formats.

In Mac OS X DWARF2 is used and ELF executables are not used – what is libbacktrace then good for?

[ballapete (Peter "Pete" Dyballa)]

When tried to build libstdcxx, port told me that it was now (named) libgcc. This package could be built, which might also be used as status for libstdcxx, which can be close as fixed or will never be fixed…

[mf2k (Frank Schima)]

Unify powerpc keywords.

[mf2k (Frank Schima)]

See #53012.

[kencu (Ken)]

this port no longer exists