Fix autoconf to have a new WINE_TRY_SHLIB_FLAGS function that tests if
the provided flags can be used to link a shared library.
Added test for building shared libs on HP-UX with gcc.

diff --git a/configure b/configure
index 9ee57ea..f2ea42e 100755
--- a/configure
+++ b/configure
@@ -13777,19 +13777,7 @@
   ac_wine_try_cflags_saved=$CFLAGS
 CFLAGS="$CFLAGS -fPIC -shared -Wl,-soname,conftest.so.1.0,-Bsymbolic"
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
+void myfunc() {}
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -14150,19 +14138,7 @@
   ac_wine_try_cflags_saved=$CFLAGS
 CFLAGS="$CFLAGS -fPIC -Wl,-G,-h,conftest.so.1.0,-B,symbolic"
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
+void myfunc() {}
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -14212,19 +14188,7 @@
   ac_wine_try_cflags_saved=$CFLAGS
 CFLAGS="$CFLAGS -bundle"
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
+void myfunc() {}
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -14276,6 +14240,57 @@
             IOKITLIB="-framework IOKit"
 
 	    	    IOKITLIB = "$IOKITLIB $COREFOUNDATIONLIB"
+          else
+            echo "$as_me:$LINENO: checking whether we can build an HP-UX dll" >&5
+echo $ECHO_N "checking whether we can build an HP-UX dll... $ECHO_C" >&6
+if test "${ac_cv_c_dll_hpux+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -shared"
+cat >conftest.$ac_ext <<_ACEOF
+void myfunc() {}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_c_dll_hpux="yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_c_dll_hpux="no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_dll_hpux" >&5
+echo "${ECHO_T}$ac_cv_c_dll_hpux" >&6
+            if test "$ac_cv_c_dll_hpux" = "yes"
+            then
+              LIBEXT="sl"
+              LDDLLFLAGS="-shared"
+              LDSHARED="\$(CC) -shared"
+            fi
           fi
         fi
       fi