source: trunk/third/perl/hints/aix.sh @ 14545

# hints/aix.sh
# AIX 3.x.x hints thanks to Wayne Scott <wscott@ichips.intel.com>
# AIX 4.1 hints thanks to Christopher Chan-Nui <channui@austin.ibm.com>.
# AIX 4.1 pthreading by Christopher Chan-Nui <channui@austin.ibm.com> and
#         Jarkko Hietaniemi <jhi@iki.fi>.
# AIX 4.3.x LP64 build by Steven Hirsch <hirschs@btv.ibm.com>
# Merged on Mon Feb  6 10:22:35 EST 1995 by
#   Andy Dougherty  <doughera@lafcol.lafayette.edu>

#
# Contact dfavor@corridor.com for any of the following:
#
#    - AIX 43x and above support
#    - gcc + threads support
#    - socks support
#
# Apr 99 changes:
#
#    - use nm in AIX 43x and above
#    - gcc + threads now builds
#    [(added support for socks) Jul 99 SOCKS support rewritten]
#
# Notes:
#
#    - shared libperl support is tricky. if ever libperl.a ends up
#      in /usr/local/lib/* it can override any subsequent builds of
#      that same perl release. to make sure you know where the shared
#      libperl.a is coming from do a 'dump -Hv perl' and check all the
#      library search paths in the loader header.
#
#      it would be nice to warn the user if a libperl.a exists that is
#      going to override the current build, but that would be complex.
#
#      better yet, a solid fix for this situation should be developed.
#

# Configure finds setrgid and setruid, but they're useless.  The man
# pages state:
#    setrgid: The EPERM error code is always returned.
#    setruid: The EPERM error code is always returned. Processes cannot
#             reset only their real user IDs.
d_setrgid='undef'
d_setruid='undef'

alignbytes=8

case "$usemymalloc" in
'')  usemymalloc='n' ;;
esac

# Intuiting the existence of system calls under AIX is difficult,
# at best; the safest technique is to find them empirically.

# AIX 4.3.* and above default to using nm for symbol extraction
case "$osvers" in
   3.*|4.1.*|4.2.*)
      usenm='undef'
      ;;
   *)
      usenm='true'
      ;;
esac

so="a"
# AIX itself uses .o (libc.o) but we prefer compatibility
# with the rest of the world and with rest of the scripting
# languages (Tcl, Python) and related systems (SWIG).
# Stephanie Beals <bealzy@us.ibm.com>
dlext="so"

# Take possible hint from the environment.  If 32-bit is set in the
# environment, we can override it later.  If set for 64, the
# 'sizeof' test sees a native 64-bit architecture and never looks back.
case "$OBJECT_MODE" in
32)
    cat >&4 <<EOF

You have OBJECT_MODE=32 set in the environment. 
I take this as a hint you do not want to
build for a 64-bit address space. You will be
given the opportunity to change this later.
EOF
    ;;
64)
    cat >&4 <<EOF

You have OBJECT_MODE=64 set in the environment. 
This forces a full 64-bit build.  If that is
not what you intended, please terminate this
program, unset it and restart.
EOF
    ;;
*)  ;;
esac

# Trying to set this breaks the POSIX.c compilation

# Make setsockopt work correctly.  See man page.
# ccflags='-D_BSD=44'

# uname -m output is too specific and not appropriate here
case "$archname" in
'') archname="$osname" ;;
esac

cc=${cc:-cc}

case "$osvers" in
3*) d_fchmod=undef
    ccflags="$ccflags -D_ALL_SOURCE"
    ;;
*)  # These hints at least work for 4.x, possibly other systems too.
    ccflags="$ccflags -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE"
    case "$cc" in
     *gcc*) ;;
     *) ccflags="$ccflags -qmaxmem=16384" ;;
    esac
    nm_opt='-B'
    ;;
esac

# These functions don't work like Perl expects them to.
d_setregid='undef'
d_setreuid='undef'

# Changes for dynamic linking by Wayne Scott <wscott@ichips.intel.com>
#
# Tell perl which symbols to export for dynamic linking.
case "$cc" in
*gcc*) ccdlflags='-Xlinker' ;;
esac
# the required -bE:$installarchlib/CORE/perl.exp is added by
# libperl.U (Configure) later.

case "$ldlibpthname" in
'') ldlibpthname=LIBPATH ;;
esac

# The first 3 options would not be needed if dynamic libs. could be linked
# with the compiler instead of ld.
# -bI:$(PERL_INC)/perl.exp  Read the exported symbols from the perl binary
# -bE:$(BASEEXT).exp        Export these symbols.  This file contains only one
#                           symbol: boot_$(EXP)  can it be auto-generated?
case "$osvers" in
3*) 
    lddlflags="$lddlflags -H512 -T512 -bhalt:4 -bM:SRE -bI:\$(PERL_INC)/perl.exp -bE:\$(BASEEXT).exp -e _nostart -lc"
    ;;
*) 
    lddlflags="$lddlflags -bhalt:4 -bM:SRE -bI:\$(PERL_INC)/perl.exp -bE:\$(BASEEXT).exp -b noentry -lc"
    ;;
esac

# This script UU/usethreads.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use threads.
cat > UU/usethreads.cbu <<'EOCBU'
case "$usethreads" in
$define|true|[yY]*)
        ccflags="$ccflags -DNEED_PTHREAD_INIT"
        case "$cc" in
        gcc) ;;
        cc_r) ;;
        cc|xl[cC]_r) 
            echo >&4 "Switching cc to cc_r because of POSIX threads."
            # xlc_r has been known to produce buggy code in AIX 4.3.2.
            # (e.g. pragma/overload core dumps)  Let's suspect xlC_r, too.
            # --jhi@iki.fi
            cc=cc_r
            ;;
        '') 
            cc=cc_r
            ;;
        *)
            cat >&4 <<EOM
For pthreads you should use the AIX C compiler cc_r.
(now your compiler was set to '$cc')
Cannot continue, aborting.
EOM
            exit 1
            ;;
        esac

        # c_rify libswanted.
        set `echo X "$libswanted "| sed -e 's/ \([cC]\) / \1_r /g'`
        shift
        libswanted="$*"
        # c_rify lddlflags.
        set `echo X "$lddlflags "| sed -e 's/ \(-l[cC]\) / \1_r /g'`
        shift
        lddlflags="$*"

        # Insert pthreads to libswanted, before any libc or libC.
        set `echo X "$libswanted "| sed -e 's/ \([cC]\) / pthreads \1 /'`
        shift
        libswanted="$*"
        # Insert pthreads to lddlflags, before any libc or libC.
        set `echo X "$lddlflags " | sed -e 's/ \(-l[cC]\) / -lpthreads \1 /'`
        shift
        lddlflags="$*"

        ;;
esac
EOCBU

# This script UU/uselargefiles.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use large files.
cat > UU/uselargefiles.cbu <<'EOCBU'
case "$uselargefiles" in
''|$define|true|[yY]*)
        lfcflags="`getconf XBS5_ILP32_OFFBIG_CFLAGS 2>/dev/null`"
        lfldflags="`getconf XBS5_ILP32_OFFBIG_LDFLAGS 2>/dev/null`"
        # _Somehow_ in AIX 4.3.1.0 the above getconf call manages to
        # insert(?) *something* to $ldflags so that later (in Configure) evaluating
        # $ldflags causes a newline after the '-b64' (the result of the getconf).
        # (nothing strange shows up in $ldflags even in hexdump;
        #  so it may be something in the shell, instead?)
        # Try it out: just uncomment the below line and rerun Configure:
# echo >&4 "AIX 4.3.1.0 $lfldflags mystery" ; exit 1
        # Just don't ask me how AIX does it, I spent hours wondering.
        # Therefore the line re-evaluating lfldflags: it seems to fix
        # the whatever it was that AIX managed to break. --jhi
        lfldflags="`echo $lfldflags`"
        lflibs="`getconf XBS5_ILP32_OFFBIG_LIBS 2>/dev/null|sed -e 's@^-l@@' -e 's@ -l@ @g`"
        case "$lfcflags$lfldflags$lflibs" in
        '');;
        *) ccflags="$ccflags $lfcflags"
           ldflags="$ldflags $lfldflags"
           libswanted="$libswanted $lflibs"
           ;;
        esac
        lfcflags=''
        lfldflags=''
        lflibs=''
        ;;
esac
EOCBU

# This script UU/use64bitint.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use 64 bit integers.
cat > UU/use64bitint.cbu <<'EOCBU'
case "$use64bitint" in
$define|true|[yY]*)
            case "`oslevel`" in
            3.*|4.[012].*)
                cat >&4 <<EOM
AIX `oslevel` does not support 64-bit interfaces.
You should upgrade to at least AIX 4.3.
EOM
                exit 1
                ;;
            esac
            ;;
esac
EOCBU

cat > UU/use64bitall.cbu <<'EOCBU'
# This script UU/use64bitall.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to be maximally 64-bitty.
case "$use64bitall" in
$define|true|[yY]*)
            case "`oslevel`" in
            3.*|4.[012].*)
                cat >&4 <<EOM
AIX `oslevel` does not support 64-bit interfaces.
You should upgrade to at least AIX 4.3.
EOM
                exit 1
                ;;
            esac
            echo " "
            echo "Checking the CPU width of your hardware..." >&4
            $cat >size.c <<EOCP
#include <stdio.h>
#include <sys/systemcfg.h>
int main (void)
{
  printf("%d\n",_system_configuration.width);
  return(0);
}
EOCP
            set size
            if eval $compile_ok; then
                lfcpuwidth=`./size`
                echo "You are running on $lfcpuwidth bit hardware."
            else
                dflt="32"
                echo " "
                echo "(I can't seem to compile the test program.  Guessing...)"
                rp="What is the width of your CPU (in bits)?"
                . ./myread
                lfcpuwidth="$ans"
            fi
            $rm -f size.c size
            case "$lfcpuwidth" in
            32*)
                cat >&4 <<EOM
Bzzzt! At present, you can only perform a
full 64-bit build on a 64-bit machine.
EOM
                exit 1
                ;;
            esac
            lfcflags="`getconf XBS5_LP64_OFF64_CFLAGS 2>/dev/null`"
            lfldflags="`getconf XBS5_LP64_OFF64_LDFLAGS 2>/dev/null`"
            # See jhi's comments above regarding this re-eval.  I've
            # seen similar weirdness in the form of:
            #
# 1506-173 (W) Option lm is not valid.  Enter xlc for list of valid options.
            #
            # error messages from 'cc -E' invocation. Again, the offending
            # string is simply not detectable by any means.  Since it doesn't
            # do any harm, I didn't pursue it. -- sh
            lfldflags="`echo $lfldflags`"
            lflibs="`getconf XBS5_LP64_OFF64_LIBS 2>/dev/null|sed -e 's@^-l@@' -e 's@ -l@ @g`"
            # -q32 and -b32 may have been set by uselargefiles or user.
            # Remove them.
            ccflags="`echo $ccflags | sed -e 's@-q32@@'`"
            ldflags="`echo $ldflags | sed -e 's@-b32@@'`"
            # Tell archiver to use large format.  Unless we remove 'ar'
            # from 'trylist', the Configure script will just reset it to 'ar'
            # immediately prior to writing config.sh.  This took me hours
            # to figure out.
            trylist="`echo $trylist | sed -e 's@^ar @@' -e 's@ ar @ @g' -e 's@ ar$@@'`"
            ar="ar -X64"
            nm_opt="-X64 $nm_opt"
            # Note: Placing the 'lfcflags' variable into the 'ldflags' string
            # is NOT a typo.  ldlflags is passed to the C compiler for final
            # linking, and it wants -q64 (-b64 is for ld only!).
            case "$lfcflags$lfldflags$lflibs" in
            '');;
            *) ccflags="$ccflags $lfcflags"
               ldflags="$ldflags $lfcflags"
               lddlflags="$lfldflags $lddlflags"
               libswanted="$libswanted $lflibs"
               ;;
            esac
            case "$ccflags" in
            *-DUSE_64_BIT_ALL*) ;;
            *) ccflags="$ccflags -DUSE_64_BIT_ALL";;
            esac
            case "$archname64" in
            ''|64*) archname64=64all ;;
            esac
            longsize="8"
            # Don't try backwards compatibility
            bincompat="$undef"
            d_bincompat5005="$undef"
            lfcflags=''
            lfldflags=''
            lflibs=''
            lfcpuwidth=''
            ;;
esac
EOCBU

cat > UU/uselongdouble.cbu <<'EOCBU'
# This script UU/uselongdouble.cbu will get 'called-back' by Configure 
# after it has prompted the user for whether to use long doubles.
case "$uselongdouble" in
$define|true|[yY]*)
        ccflags="$ccflags -qlongdouble"
        # The explicit cc128, xlc128, xlC128 are not needed,
        # the -qlongdouble should do the trick. --jhi
        d_Gconvert='sprintf((b),"%.*llg",(n),(x))'
        ;;
esac
EOCBU

# If the C++ libraries, libC and libC_r, are available we will prefer them
# over the vanilla libc, because the libC contain loadAndInit() and
# terminateAndUnload() which work correctly with C++ statics while libc
# load() and unload() do not.  See ext/DynaLoader/dl_aix.xs.
# The C-to-C_r switch is done by usethreads.cbu, if needed.
if test -f /lib/libC.a -a X"`$cc -v 2>&1 | grep gcc`" = X; then
    # Cify libswanted.
    set `echo X "$libswanted "| sed -e 's/ c / C c /'`
    shift
    libswanted="$*"
    # Cify lddlflags.
    set `echo X "$lddlflags "| sed -e 's/ -lc / -lC -lc /'`
    shift
    lddlflags="$*"
fi

# EOF