AIX architecture problems

AIX architecture problems

[David Kramer]

Background: AIX 5.2 box.  My mission is to port my company's application
from AIX's native xlC compiler to the GNU toolchain.  I bootstraped gcc
3.4.0 from a gcc 3.3.3 (build for AIX5.1) I downloaded.  I built gcc with
an architecture of "powerpc-ibm-aix5.2.0.0".  I'm still using a binutils
built by someone else.  I can tell you this:

/opt/local/bin/ld: supported targets: aixcoff-rs6000 aix5coff64-rs6000 
srec symbolsrec tekhex binary ihex
/opt/local/bin/ld: supported emulations: aix5ppc
/opt/local/bin/ld: emulation specific options:
  no emulation specific options.

/opt/local/bin/ld -v
GNU ld version 2.14 20030612

> lsattr -E -l proc0   (there are 4 identical processors)
frequency 339999568       Processor Speed False
state     enable          Processor state False
type      PowerPC_RS64-II Processor type  False


I've got all the code compiled using g++ to .o files after some pretty
significant changes, but linking produces output I don't understand.  
Here's a shortened version of the output:

g++ -I. -I../common -I/dkramer/build/dhgcc340/trunk/rogue
-I/dkramer/build/dhgcc340/trunk/rogue -I/dkramer/build/dh
gcc340/trunk/dbaccess -g -DDEBUG -D_DEBUG -DRWDEBUG -DUSE_SYB -DSHOWSQL
-Daix -DRS6000 -Daix_ansi -D_RWCONFIG=xsd -DRWTLS7 -DRWDB5
-L/software/sybase/sybase125/OCS-12_5/lib
-L/dkramer/build/dhgcc340/trunk/lib -DUSE_FS -D DISABLE_SHLIB_ACCESS=1
-DRW_NO_LEADING_UNDERSCORE -DRWDB_SYB_DBLIB -Wno-deprecated -o gensql
gensql.o rpttype.o
 /dkramer/build/dhgcc340/trunk/lib/rwctlxsd.o       -ltcdbd -lrfac0d  
-lctl52-xsd  -ldbt52-xsd -ltccommond -ltls77-
xsd  -ltcl -lct -lcs -lblk -lnsl -lcomn -lintl -ldl      -lm

/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/lib/libm.a(log10.o)' is incompatible with rs6000:6000 output
/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/lib/libm.a(tan.o)' is incompatible with rs6000:6000 output
/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/lib/libm.a(round.o)' is incompatible with rs6000:6000 output
...
/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/opt/gcc3.4.0/lib/gcc/powerpc-ibm-aix5.2.0.0/3.4.0/libgcc.a(_divdi3.o)' 
is incompatible with rs6000:6000 output
/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/opt/gcc3.4.0/lib/gcc/powerpc-ibm-aix5.2.0.0/3.4.0/libgcc.a(_moddi3.o)' 
is incompatible with rs6000:6000 output
/opt/local/bin/ld: warning: powerpc:601 architecture of input file 
`/opt/gcc3.4.0/lib/gcc/powerpc-ibm-aix5.2.0.0/3.4.0/libgcc.a(_udivdi3.o)' 
is incompatible with rs6000:6000 output

An off-list post directed me towards the -m options and the -mcpu= option.  
Which combination of -mfoo and -mcpu=foo do I need, based on the lsattr 
output above, and the "is incompatible with rs6000:6000 output" message?

-Do I need to just specify one or more of those command line option I'm 
missing?

-Do I need to rebuild the compiler itself with this option?  I'm guessing 
I do, since it's complaining about its own libraries that got built with 
it

-Do I need to rebuild the compiler itself with this option?  I'm guessing 
I do, since it's complaining about its own libraries that got built with 
it.

Thanks in advance.  Apologies in advance if this is something stupid; this
is the first time I've done something like this.  I did STFW, but most of
the references I found were problems with 32/64 bit incompatibilities,
which I don't think is the problem here.