🚀 go-pugleaf

Building gcc-2.7.2 on rs6000-ibm-aix3.2.5, bootstrap from native cc.

==== output from the sub-make to build libgcc2.a (irrelevant part elided)
rm -f tmplibgcc2.a
for name in _muldi3 ...; \
do \
  echo ${name}; \
  ./xgcc -B./ -O2   -DIN_GCC   -g -I./include  -g1  -mcpu=common -I. -I. -I./config -c -DL${name} \
      ./libgcc2.c -o ${name}.o; \
  if [ $? -eq 0 ] ; then true; else exit 1; fi; \
  ar rc tmplibgcc2.a ${name}.o; \
  rm -f ${name}.o; \
done
_muldi3
*unknown*: Assembler messages:
*unknown*:0: Error: invalid architecture -mcom
make[4]: *** [libgcc2.a] Error 1
==== end of excerpt from make output

I tested a simpler example to verify that it's the -mcpu option
(the ./cpp line is folded to avoid mailer problems):
$ ./xgcc -v -B./ -c -mcpu=common kwzh.c
Reading specs from ./specs
gcc version 2.7.2
 ./cpp -lang-c -v -isystem ./include -undef -D__GNUC__=2 -D__GNUC_MINOR__=7 \
   -D_IBMR2 -D_POWER -D_AIX -D_AIX32 -D_IBMR2 -D_POWER -D_AIX -D_AIX32 \
   -Asystem(unix) -Asystem(aix) -Acpu(rs6000) -Amachine(rs6000) \
   -D__CHAR_UNSIGNED__ -D_ARCH_COM kwzh.c /tmp/ccenYDFW.i
GNU CPP version 2.7.2
#include "..." search starts here:
#include <...> search starts here:
 ./include
 /usr/local/include
 /usr/local/rs6000-ibm-aix3.2.5/include
 /usr/local/lib/gcc-lib/rs6000-ibm-aix3.2.5/2.7.2/include
 /usr/include
End of search list.
 ./cc1 /tmp/ccenYDFW.i -quiet -dumpbase kwzh.c -mcpu=common -version -o /tmp/ccenYDFW.s
GNU C version 2.7.2 compiled by CC.
 /usr/local/rs6000-ibm-aix3.2.5/bin/as -u -mcom -o kwzh.o /tmp/ccenYDFW.s
*unknown*: Assembler messages:
*unknown*:0: Error: invalid architecture -mcom
$ exit