Re: [tbox-l] libgcc_s, gcc-4.0.0-1

[Pythagoras W. <py...@ll...>]

On Fri, May 11, 2007 at 09:46:05AM -0700, Bryan Henderson wrote:
:I recently upgraded to gcc-4.0.0-1 and gcc-c++-4.0.0-1 and now a C++ 
:program compiled under the previous gcc3 will not run and C++ compiles 
:fail.
:
:The problem is there is no libgcc_s.a on my system, and presumably there 
:used to be.  g++ does a "-lgcc_s", so it's required.  I looked at an old 
:gcc-3.3.2-3.aix5.1.ppm.rpm and it does not appear to contain libgcc_s.a 
:either.
:
:Where am I supposed to get libgcc_s?

libgcc_s is part of the libgcc RPM.  Pick the appropriate one of:
  libgcc-4.0.0-1.aix5.1.ppc.rpm
  libgcc-4.0.0-1.aix5.2.ppc.rpm
  libgcc-4.0.0-1.aix5.3.ppc.rpm

However, if you are doing dynamic 64-bit builds, it still won't work:

$ echo "int main() { }" > foo.c
$ /opt/freeware/bin/g++ -maix64 -o foo foo.c
ld: 0711-317 ERROR: Undefined symbol: .__register_frame_info_table
ld: 0711-317 ERROR: Undefined symbol: .__deregister_frame_info
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
collect2: ld returned 8 exit status

That is due to there being no 64-bit shared object.  In the 3.3.2
series, there was a separate library file called libgcc_s_ppc64.a that
64-builds would use.  No such thing exists in the 4.0.0 series.  Also,
note that the pthread-specific versions of libgcc_s are also missing.

-- 
Pythagoras Watson, LLNL ASC Systems Administrator