First cut at standard way of making dynamically loadable extensions on UNIX.

Examples on how to test:

 ./configure --with-xml              static
 ./configure --with-xml=/opt         static
 ./configure --with-xml=shared       shared
 ./configure --with-xml=shared,/opt  shared

The difference between these two is that when the extension is shared, it
is not merged into libphpext.a.  The shared extension is currently always
built.  I can't find a way to do just one or the other with automake/libtool,
if someone has a clever idea, please come forward. :-)

"make install" installs the .so (as well as a lot of other cruft) in
$prefix/lib/php.

1 files changed, 24 insertions, 4 deletions

diff --git a/ext/xml/config.m4 b/ext/xml/config.m4
index b70082a547..787ee3465d 100644
--- a/ext/xml/config.m4
+++ b/ext/xml/config.m4
@@ -4,7 +4,25 @@
 AC_MSG_CHECKING(for XML support)
 AC_ARG_WITH(xml,
 [  --with-xml              Include XML support],[
+  case $withval in
+    shared)
+      shared=yes
+      withval=yes
+      ;;
+    shared,*)
+      shared=yes
+      withval=`echo $withval | sed -e 's/^shared,//'`
+      ;;
+    *)
+      shared=no
+      ;;
+  esac
   if test "$withval" != "no"; then
+    if test "$shared" = "yes"; then
+      AC_MSG_RESULT([yes (shared)])
+    else
+      AC_MSG_RESULT([yes (static)])
+    fi
     if test "$withval" = "yes"; then
       test -d /usr/include/xmltok && XML_INCLUDE="-I/usr/include/xmltok"
       test -d /usr/include/xml && XML_INCLUDE="-I/usr/include/xml"
@@ -19,13 +37,15 @@ AC_ARG_WITH(xml,
       fi
     fi
     AC_DEFINE(HAVE_LIBEXPAT, 1)
-    AC_MSG_RESULT(yes)
-    PHP_EXTENSION(xml)
-    EXTRA_LIBS="$EXTRA_LIBS $XML_LIBS"
-    INCLUDES="$INCLUDES $XML_INCLUDE"
+    PHP_EXTENSION(xml, $shared)
+    if test "$shared" != "yes"; then
+      EXTRA_LIBS="$EXTRA_LIBS $XML_LIBS"
+    fi
   else
     AC_MSG_RESULT(no)
   fi
 ],[
   AC_MSG_RESULT(no)
 ]) 
+AC_SUBST(XML_LIBS)
+AC_SUBST(XML_INCLUDE)