From chuck@nicolabanking.com

make SCREEN PRINT​:
  `sh cflags libperl.so toke.o` -KPIC toke.c
  CCCMD = /bin/cc -DPERL_CORE -c -I/usr/include -I/usr/ucbinclude
-I/usr/local/include -O
NCR High Performance C Compiler R3.0c
(c) Copyright 1994-97, NCR Corporation
(c) Copyright 1987-97, MetaWare Incorporated
w "toke.c",L462/C23(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L623/C10(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L1269/C20(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L1808/C7(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L2034/C10(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L2040/C10(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L2042/C26(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L2986/C23(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3208/C17(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3482/C8(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3482/C32(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3510/C8(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3811/C8(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3812/C8(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3820/C8(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3938/C55(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3972/C22(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L3994/C51(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L4007/C12(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L4157/C9(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L5907/C24(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L6358/C20(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L6430/C5(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L6672/C18(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L6776/C5(#257)​: '=' encountered where '==' may have been
intended.
w "toke.c",L5165​: Perl_yylex​: Global CSE elimination suppressed; function is
too big.
Memory exhausted (malloc returned 0)
While allocating 16000 byte chunk for pool live/dead vectors

Aborting(1)...
*** Error code 1 (bu21)

make​: fatal error.
$

MYCONFIG SCREEN PRINT​:
$ vi myconfig
"myconfig" 37 lines, 1893 characters
#!/bin/sh

# This script is designed to provide a handy summary of the configuration
# information being used to build perl. This is especially useful if you
# are requesting help from comp.lang.perl.misc on usenet or via mail.

# Note that the text lines /^Summary of/ .. /^\s*$/ are copied into
Config.pm.
cat <<'!NO!SUBS!'
Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration​:
  Platform​:
  osname=svr4.0, osvers=3.0, archname=3426-svr4.0
  uname='nbs3426 nbs3426 4.0 3.0 3426 pentium ii(tm)-isapci '
  config_args='-dsE'
  hint=recommended, useposix=true, d_sigaction=define
  usethreads=undef use5005threads=undef useithreads=undef
usemultiplicity=unde
f
  useperlio=undef d_sfio=undef uselargefiles=define usesocks=undef
  use64bitint=undef use64bitall=undef uselongdouble=undef
  Compiler​:
  cc='/bin/cc', ccflags ='-I/usr/include -I/usr/ucbinclude
-I/usr/local/includ
e',
  optimize='-O',
  cppflags='-I/usr/include -I/usr/ucbinclude -I/usr/local/include'
  ccversion='', gccversion='', gccosandvers=''
  intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
  d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
  ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize
=4
  alignbytes=4, usemymalloc=y, prototype=define
  Linker and Libraries​:
  ld='/bin/cc', ldflags ='-L/usr/ccs/lib -L/usr/ucblib -L/usr/local/lib
-L/usr
/gnu/lib'
  libpth=/usr/local/lib /usr/gnu/lib /lib /usr/lib /usr/ccs/lib
/usr/ucblib
  libs=-lsocket -lnsl -ldbm -ldl -lld -lm -lc -lcrypt -lucb -lx
  perllibs=-lsocket -lnsl -ldl -lld -lm -lc -lcrypt -lucb -lx
  libc=, so=so, useshrplib=true, libperl=libperl.so
  Dynamic Linking​:
  dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
  cccdlflags='-KPIC', lddlflags='-G -L/usr/ccs/lib -L/usr/ucblib
-L/usr/local/
lib -L/usr/gnu/lib'

!NO!SUBS!

From @nwc10

    \`sh  cflags libperl\.so toke\.o\` \-KPIC toke\.c
      CCCMD =  /bin/cc \-DPERL\_CORE \-c \-I/usr/include \-I/usr/ucbinclude

-I/usr/local/include -O

w "toke.c",L5165​: Perl_yylex​: Global CSE elimination suppressed; function is
too big.
Memory exhausted (malloc returned 0)
While allocating 16000 byte chunk for pool live/dead vectors

Aborting(1)...
*** Error code 1 (bu21)

optimize='\-O'\,

It seems you still have the optimiser flags in.

I think (this is from memory, but hopefully is correct) in your existing
configured build directory your best bet is to

1​: edit config.sh. Find the line optimize='-O' and change it to
  optimize=''
2​: ./Configure -S
  to rebuild the Makefile and other files which depend on the settings in
  config.sh
3​: rerun make.

Hopefully your compiler line will then be​:

  `sh cflags libperl.so toke.o` -KPIC toke.c
  CCCMD = /bin/cc -DPERL_CORE -c -I/usr/include -I/usr/ucbinclude
-I/usr/local/include

(ie that -O at the end is gone)

You'll end up with a perl built with no optimisation, which might be slower
that you would like.

A better but more involved solution would be to see if your compiler's
documentation gives any clues on which flags to use to tune its behaviour;
either by turning off all Global CSE (which the compiler appears to be
reporting is where it's hitting its limits) or by telling it exactly how
large a buffer to allocate for Global CSE (so that it doesn't attempt to
do what it's currently doing, and allocate a buffer that exhausts memory)

I have no idea how to do that, but believe that some compilers let you do
this sort of thing.

Nicholas Clark

From @jhi

An alternative to this is to turn off the optimization only on the toke.c.
rm config.sh and re-Configure with an additional parameter​:

  ./Configure -de -Dtoke_cflags='optimize=""' ...

This should remove optimization from only the toke.c

A better but more involved solution would be to see if your compiler's
documentation gives any clues on which flags to use to tune its behaviour;
either by turning off all Global CSE (which the compiler appears to be
reporting is where it's hitting its limits) or by telling it exactly how
large a buffer to allocate for Global CSE (so that it doesn't attempt to
do what it's currently doing, and allocate a buffer that exhausts memory)

I have no idea how to do that, but believe that some compilers let you do
this sort of thing.

Yes, many compilers have an option like that, -Olimit N or -Omaxmem=N
or something of the sort.

Nicholas Clark

From @doughera88

An alternative to this is to turn off the optimization only on the toke.c.
rm config.sh and re-Configure with an additional parameter​:

\./Configure \-de \-Dtoke\_cflags='optimize=""' \.\.\.

This should remove optimization from only the toke.c

Normally, this is a good idea, but for NCR MP-RAS you also need to turn
off the optimizer for reg*.c, or else regular expressions won't work.
The first symptom of that will be a very puzzling failure to correctly
build DynaLoader.

Your best bet here is to turn off the optimizer all around. See the
section =item Optimizer in the INSTALL file for details.

From [Unknown Contact. See original ticket]

Thanks for your suggestions anyway.

@chorny - Status changed from 'open' to 'resolved'