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On Wed, 25 Jan 2012 18:09:33 -0500, Daryle Walker <...@hotmail.com
I'm still using my 2002 PowerPC/G4 Mac with Mac OS X 10.4 (Tiger). I loaded GCC 4.6 (with multiprocessor options) onto it with MacPorts. I have a "user-config.jam" in my home folder like:
//===using xsltproc : /opt/local/bin/xsltproc ;
using boostbook : /opt/local/share/xsl/docbook-xsl/ : /opt/local/share/xml/docbook/4.2 ;
using doxygen ;
using darwin ;using gcc : 4.6 : g++-mp-4.6 : <cxxflagsI've tested GCC-4.6 (with C++11 active) with a "Hello World!" program, so I know it works with single-file programs. I wanted to test "base_from_member" (part of Boost.Utility) and it worked with the default "darwin" target. (I ran "b2" in "BOOST_ROOT/libs/utility/test".) However, running "b2 toolset=gcc-4.6" ended in errors like:
//===common.mkdir ../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6common.mkdir ../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debuggcc.co mpile.c++ ../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debug/base_ from_member_test.o../base_from_member_test.cpp: In constructor 'bad_class::bad_class()':../base_from_member_test.cpp:129:21: warning: 'bad_class::x_' will be initialized after [-Wreorder]../base_from_member_test.cpp:510:39: warning: base 'base_class' [-Wreorder]../base_from_member_test.cpp:507:1: warning: when initialized here [-Wreorder]gcc.link ../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debug/base_ from_member_test/usr/bin/ld: unknown flag: --start-groupcollect2: ld returned 1 exit status
"g++-mp-4.6" -o "../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debug/base _from_member_test" -Wl,--start-group "../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debug/base _from_member_test.o" -Wl,-Bstatic -Wl,-Bdynamic -Wl,--end-group -g
...failed gcc.link ../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debug/base_ from_member_test......skipped <p../../../bin.v2/libs/utility/test/base_from_member_test.test/gcc-4.6/debugG CC-4.6 compiles each C++ file into an object file just fine. The problem happens when linking various object and library files into an executable; whichever linker gets called (the system linker?) chokes on a "--start-group" flag. When I first started writing this message, I thought the problem was GCC-4.6 being too new for the linker, but maybe we have to tweak something in our Jam files instead. (Could it be the fact I downloaded the multiprocessor variant of GCC-4.6?)
BTW, how do I specify that I only want to try out the base_from_member test without trying to build all other tests in the directory?
Daryle W.
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