# 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>.
# 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:
alignbytes=8
-usemymalloc='n'
+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"
+dlext="o"
+
+# Trying to set this breaks the POSIX.c compilation
# Make setsockopt work correctly. See man page.
# ccflags='-D_BSD=44'
case "$osvers" in
3*) d_fchmod=undef
- ccflags='-D_ALL_SOURCE'
+ ccflags="$ccflags -D_ALL_SOURCE"
;;
*) # These hints at least work for 4.x, possibly other systems too.
- d_setregid='undef'
- d_setreuid='undef'
- ccflags='-qmaxmem=8192 -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE'
+ ccflags="$ccflags -D_ALL_SOURCE -D_ANSI_C_SOURCE -D_POSIX_SOURCE"
+ case "$cc" in
+ *gcc*) ;;
+ *) ccflags="$ccflags -qmaxmem=16384" ;;
+ esac
nm_opt='-B'
;;
esac
-# The optimizer in 4.1.1 apparently generates bad code for scope.c.
-# Configure doesn't offer an easy way to propagate extra variables
-# only for certain cases, so the following contortion is required:
-# This is probably not needed in 5.002 and later.
-# scope_cflags='case "$osvers" in 4.1*) optimize=" ";; 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 "$cc" in
-*gcc*) ccdlflags='-Xlinker -bE:perl.exp' ;;
-*) ccdlflags='-bE:perl.exp' ;;
+*gcc*) ccdlflags='-Xlinker' ;;
+esac
+# the required -bE:$installarchlib/CORE/perl.exp is added by
+# libperl.U (Configure) later.
+
+case "$ldlibpthname" in
+'') ldlibpthname=LIBPATH ;;
esac
# The first 3 options would not be needed if dynamic libs. could be linked
# symbol: boot_$(EXP) can it be auto-generated?
case "$osvers" in
3*)
-lddlflags='-H512 -T512 -bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -e _nostart -lc'
+ lddlflags="$lddlflags -H512 -T512 -bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -e _nostart -lc"
;;
*)
-lddlflags='-H512 -T512 -bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -b noentry -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 "$cc" in
+ gcc) ;;
+ cc_r) ;;
+ cc|xlc_r)
+ echo >&4 "Switching cc to cc_r because of POSIX threads."
+ # xlc_r has been known to produce buggy code in AIX 4.3.2.
+ # (e.g. pragma/overload core dumps)
+ # --jhi@iki.fi
+ cc=cc_r
+ if test ! -e /bin/cc_r; then
+ cat >&4 <<EOM
+For pthreads you should use the AIX C compiler cc_r.
+But I cannot find it in /bin.
+Cannot continue, aborting.
+EOM
+ fi
+ ;;
+ '')
+ cc=cc_r
+ ;;
+ *)
+ cat >&4 <<EOM
+For pthreads you should use the AIX C compiler cc_r.
+(now your compiler was set to '$cc')
+Cannot continue, aborting.
+EOM
+ exit 1
+ ;;
+ esac
+
+ # Add the POSIX threads library and the re-entrant libc to lddflags.
+ set `echo X "$lddlflags"| sed -e 's/ -lc$/ -lpthreads -lc_r/'`
+ shift
+ lddlflags="$*"
-;;
+ # Add the POSIX threads library and the re-entrant libc to libswanted.
+ # Make sure the c_r library is before the c library or
+ # make will fail.
+ set `echo X "$libswanted "| sed -e 's/ c / pthreads c_r /'`
+ shift
+ libswanted="$*"
+ ;;
esac
+EOCBU
+
+# This script UU/use64bits.cbu will get 'called-back' by Configure
+# after it has prompted the user for whether to use 64 bits.
+cat > UU/use64bits.cbu <<'EOCBU'
+case "$use64bits" in
+$define|true|[yY]*)
+ case "`oslevel`" in
+ 3.*|4.[012].*)
+ cat >&4 <<EOM
+AIX `oslevel` does not support 64-bit interfaces.
+You should upgrade to at least AIX 4.2.
+EOM
+ exit 1
+ ;;
+ esac
+ ccflags="$ccflags -DUSE_LONG_LONG"
+ ccflags="$ccflags `getconf XBS5_ILP32_OFFBIG_CFLAGS 2>/dev/null`"
+
+ ldflags="$ldflags `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 >& "AIX $ldflags mystery" ; exit 1
+ # Just don't ask me how AIX does it.
+ # Therefore the line re-evaluating ldflags: it seems to bypass
+ # the whatever it was AIX managed to break. --jhi
+ ldflags="`echo $ldflags`"
+
+ libswanted="$libswanted `getconf XBS5_ILP32_OFFBIG_LIBS 2>/dev/null|sed -e 's@^-l@@' -e 's@ -l@ @g'`"
+ # When a 64-bit cc becomes available $archname64
+ # may need setting so that $archname gets it attached.
+ ;;
+esac
+EOCBU
+
+# This script UU/uselongdouble.cbu will get 'called-back' by Configure
+# after it has prompted the user for whether to use long doubles.
+cat > UU/uselongdouble.cbu <<'EOCBU'
+case "$uselongdouble" in
+$define|true|[yY]*)
+ ccflags="$ccflags -qlongdouble"
+ ;;
+esac
+EOCBU
+
+# EOF
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