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From: David Abrahams <dave AT boost-consulting DOT com>
Subject:  Mysterious g++ link problems
Date:  Wed, 13 Jul 2005 09:50:59 -0400
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Message-ID:  <uk6justks.fsf@boost-consulting.com>
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Here are the symptoms.

    "/usr/local/gcc-3.4.4/bin/g++.exe"   -Wall -ftemplate-depth-100 -O0 -fno-inline -g  -DBOOST_ALL_NO_LIB=1  -I"..\..\.."  -c -o "..\..\..\bin.v2\libs\parameter\test\sfinae.test\gcc-3.4.4\debug\sfinae.o"  "sfinae.cpp"  

    "/usr/local/gcc-3.4.4/bin/g++.exe"     -o "..\..\..\bin.v2\libs\parameter\test\sfinae.test\gcc-3.4.4\debug\sfinae.exe"  "..\..\..\bin.v2\libs\parameter\test\sfinae.test\gcc-3.4.4\debug\sfinae.o"     -g  

/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_terminate'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_terminate'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_unexpected'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_terminate'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_terminate'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_terminate.o):: undefined reference to `___w32_sharedptr_unexpected'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_throw.o):: undefined reference to `___w32_sharedptr_unexpected'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/libstdc++.a(eh_throw.o):: undefined reference to `___w32_sharedptr_terminate'
collect2: ld returned 1 exit status

This compiler was configured built and installed by me with
--prefix=/usr/local/gcc-3.4.4 and has worked flawlessly up 'till now
(and still works fine on other programs).

Somewhat strangely, 

  > cygcheck -c gcc
  Cygwin Package Information
  Package              Version        Status
  gcc                  3.4.4-1        OK

I think until recently /bin/gcc referred to gcc-3.3.3 on my system,
but I guess a recent use of the Cygwin setup program updated it to
3.4.4.  Everything works fine if I use /bin/g++, so I guess I can just
throw out the contents of /usr/local/gcc-3.4.4, but this is still a
bit disturbing.
  
-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com


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