Incorrect SHLIBEXT is set when running configure script on HPUX IA systems. 
This causes share libs to be built with .sl instead of .so extensions.

The following is a patch to fix the problem. The patch also fix a problem in 
detecting libiconv on HPUX IA systems, where the libs are stored under 
lib/hpux32 instead of just lib. 
Diff is against samba 3.0.14a. 
Tested using HP C compiler on both IA and PA systems.

--- configure.in.orig   Tue May 17 17:00:28 2005
+++ configure.in        Fri May 20 16:24:59 2005
@@ -1271,7 +1271,6 @@
                        AC_DEFINE(BROKEN_STRNDUP,1,[Does strndup work 
correctly])
                        ;;
                *hpux*) AC_DEFINE(HPUX,1,[Whether the host os is HPUX])
-                       SHLIBEXT="so"
                        # Use special PIC flags for the native HP-UX compiler.
                        if test $ac_cv_prog_cc_Ae = yes; then
                                BLDSHARED="true"
@@ -1282,7 +1281,13 @@
                        elif test "${GCC}" = "yes"; then
                                PICFLAGS="-fPIC"
                        fi
-                       DYNEXP="-Wl,-E"
+                       if test "$host_cpu" = "ia64"; then
+                           SHLIBEXT="so"
+                           DYNEXP="-Wl,-
E,+b /usr/local/lib/hpux32:/usr/lib/hpux32"
+                       else
+                           SHLIBEXT="sl"
+                           DYNEXP="-Wl,-E,+b /usr/local/lib:/usr/lib"
+                       fi
                        AC_DEFINE(STAT_ST_BLOCKSIZE,8192,[The size of a block])
                        AC_DEFINE(POSIX_ACL_NEEDS_MASK,1,[Does a POSIX ACL 
need a mask element])
                        ;;
@@ -1772,7 +1777,8 @@
 dnl succeed when the header is found. To counter this, make sure the
 dnl library directory is there and check the ABI directory first (which
 dnl should be harmless on other systems.
-    for l in "lib32" "lib" ; do
+dnl For IA64 HPUX systems, the libs are located in lib/hpux32 instead of lib.
+    for l in "lib32" "lib" "lib/hpux32"; do
         if test -d "$i/$l" ; then
                 LDFLAGS="$save_LDFLAGS -L$i/$l"
                 LIBS=