AIX hints enhancements (threads build, SOCKS support)

	Message-ID: <372710F8.B1F73BEB@austin.ibm.com>
	Subject: Working build for AIX + gcc + threading

p4raw-id: //depot/perl@3360

1 files changed, 137 insertions, 26 deletions

diff --git a/hints/aix.sh b/hints/aix.sh
index 7b111ffc5f..d5ce75529d 100644
--- a/hints/aix.sh
+++ b/hints/aix.sh
@@ -6,6 +6,32 @@
 # 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, when Dccflags=-DSOCKS specified
+#
+# 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:
@@ -15,19 +41,28 @@
 d_setrgid='undef'
 d_setruid='undef'
 
-# Neither do these functions work like Perl expects them to.
-d_setregid='undef'
-d_setreuid='undef'
-
 alignbytes=8
 
-# Intuiting the existence of system calls under AIX is difficult, at best;
-# the safest (and slowest...) technique is to find them empirically.
-usenm='undef'
+usemymalloc='n'
+
+# 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="so"
 
+# Trying to set this breaks the POSIX.c compilation
+
 # Make setsockopt work correctly.  See man page.
 # ccflags='-D_BSD=44'
 
@@ -50,13 +85,17 @@ case "$osvers" in
     ;;
 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 "$cc" in
-*gcc*) ccdlflags="$ccdlflags -Xlinker" ;;
+*gcc*) ccdlflags='-Xlinker -bE:perl.exp' ;;
+*) ccdlflags='-bE:perl.exp' ;;
 esac
-ccdlflags="$ccdlflags -bE:perl.exp"
 
 # The first 3 options would not be needed if dynamic libs. could be linked
 # with the compiler instead of ld.
@@ -65,13 +104,84 @@ ccdlflags="$ccdlflags -bE:perl.exp"
 #                           symbol: boot_$(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='-H512 -T512 -bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -e _nostart'
     ;;
 *) 
-    lddlflags="$lddlflags -bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -b noentry -lc"
+    lddlflags='-bhalt:4 -bM:SRE -bI:$(PERL_INC)/perl.exp -bE:$(BASEEXT).exp -b noentry'
     ;;
 esac
 
+#
+# if $ccflags contains -DSOCKS, then add socks library support.
+#
+# SOCKS support also requires each source module with socket support
+# add the following lines directly after the #include <socket.h>:
+#
+#   #ifdef SOCKS
+#   #include <socks.h>
+#   #endif
+#
+# It is expected that libsocks.a resides in /usr/local/lib and that
+# socks.h resides in /usr/local/include. If these files live some
+# different place then modify 
+#
+
+for arg in $ccflags ; do
+
+   if [ "$arg" = "-DSOCKS" ] ; then
+
+      sockslib=socks5
+      incpath=/usr/local/include
+      libpath=/usr/local/lib
+
+      echo >&4 "SOCKS using $incpath/socks.h and $libpath/lib${sockslib}.a"
+      echo >&4 "SOCKS requires source modifications. #include <socket.h> must change to:"
+      echo >&4
+      echo >&4 "   #include <socket.h>"
+      echo >&4 "   #ifdef SOCKS"
+      echo >&4 "   #include <socks.h>"
+      echo >&4 "   #endif"
+      echo >&4
+      echo >&4 "in some or all of the following files:"
+      echo >&4
+
+      for arg in `find . \( -name '*.c' -o -name '*.xs' -o -name '*.h' \) \
+                         -exec egrep -l '#.*include.*socket\.h' {} \; | \
+                         egrep -v "win32|vms|t/lib|Socket.c` ; do
+         echo >&4 "   $arg"
+      done
+
+      echo >&4
+
+      lddlflags="$lddlflags -l$sockslib"
+
+      # setting $libs here breaks the optional libraries search
+      # for some reason, so use $libswanted instead
+      #libs="$libs -lsocks5"
+
+      libswanted="$libswanted $sockslib"
+
+      #
+      # path for include file
+      #
+
+      locincpth="$locincpath /usr/local/include"
+
+      #
+      # path for library not needed, if in /usr/local/lib as that
+      # directory is already searched.
+      #
+
+      #loclibpth="$loclibpath /usr/local/lib"
+
+      break
+
+   fi
+
+done
+
+lddllibc="-lc"
+
 # This script UU/usethreads.cbu will get 'called-back' by Configure 
 # after it has prompted the user for whether to use threads.
 cat > UU/usethreads.cbu <<'EOCBU'
@@ -79,17 +189,21 @@ case "$usethreads" in
 $define|true|[yY]*)
         ccflags="$ccflags -DNEED_PTHREAD_INIT"
         case "$cc" in
-        xlc_r) ;;
-        cc) 
-	    echo >&4 "Switching cc to xlc_r because of POSIX threads."
-	    cc=xlc_r
+        gcc) ;;
+        cc_r) ;;
+        cc|xlc_r) 
+	    echo >&4 "Switching cc to cc_r because of POSIX threads."
+	    # xlc_r has been known to produce buggy code in AIX 4.3.2.
+	    # (e.g. pragma/overload core dumps)
+	    # --jhi@iki.fi
+	    cc=cc_r
             ;;
-        '' | cc_r)
-	    cc=xlc_r
+        '') 
+	    cc=cc_r
             ;;
         *)
  	    cat >&4 <<EOM
-For pthreads you should use the AIX C compiler xlc_r.
+For pthreads you should use the AIX C compiler cc_r.
 (now your compiler was '$cc')
 Cannot continue, aborting.
 EOM
@@ -99,20 +213,17 @@ EOM
 
         # Add the POSIX threads library and the re-entrant libc.
 
-        lddlflags=`echo $lddlflags | sed 's/ -lc$/ -lpthreads -lc_r -lc/'`
+        lddllibc="-lpthreads -lc_r"
 
         # Add the c_r library to the list of wanted libraries.
         # Make sure the c_r library is before the c library or
         # make will fail.
-        set `echo X "$libswanted "| sed -e 's/ c / c_r c /'`
+        set `echo X "$libswanted "| sed -e 's/ c / pthreads c_r /'`
         shift
         libswanted="$*"
-
-        # Perl's malloc doesn't survive threaded AIX.
-        case "$usemymalloc" in
-        '') usemymalloc='n' ;;
-        esac
-
 	;;
 esac
+
+lddlflags="$lddlflags $lddllibc"
+
 EOCBU