2006-07-11  Andrew W. Nosenko  <andrew w nosenko gmail com>

	* parser.c (xmlHasFeature): 
	* include/libxml/parser.h (XML_WITH_ZLIB): 
	* include/libxml/xmlversion.h.in:
	* configure.in:
	Possiblity to check, whether libxml2 was compiled with Zlib
	support, is added.
	* xmllint.c (showVersion): 
	Use it.

Index: configure.in
===================================================================
RCS file: /cvs/gnome/libxml2/configure.in,v
retrieving revision 1.319
diff -u -p -r1.319 configure.in
--- configure.in	8 Jun 2006 08:16:30 -0000	1.319
+++ configure.in	11 Jul 2006 10:36:59 -0000
@@ -325,12 +325,14 @@ echo Checking zlib
 
 dnl Checks for zlib library.
 
+WITH_ZLIB=0
 if test "$with_zlib" = "no"; then
     echo "Disabling compression support"
 else
     AC_CHECK_HEADERS(zlib.h,
 	AC_CHECK_LIB(z, gzread,[
-	    AC_DEFINE([HAVE_LIBZ], [], [Have compression library])
+	    AC_DEFINE([HAVE_LIBZ], [1], [Have compression library])
+	    WITH_ZLIB=1
 	    if test "x${Z_DIR}" != "x"; then
 		Z_CFLAGS="-I${Z_DIR}/include"
 		Z_LIBS="-L${Z_DIR}/lib -lz"
@@ -346,6 +348,7 @@ fi
 
 AC_SUBST(Z_CFLAGS)
 AC_SUBST(Z_LIBS)
+AC_SUBST(WITH_ZLIB)
 
 CPPFLAGS=${_cppflags}
 LDFLAGS=${_ldflags}
Index: parser.c
===================================================================
RCS file: /cvs/gnome/libxml2/parser.c,v
retrieving revision 1.452
diff -u -p -r1.452 parser.c
--- parser.c	18 Jun 2006 19:55:20 -0000	1.452
+++ parser.c	11 Jul 2006 10:37:18 -0000
@@ -807,6 +807,12 @@ xmlHasFeature(xmlFeature feature)
 #else
             return(0);
 #endif 
+        case XML_WITH_ZLIB:
+#ifdef LIBXML_ZLIB_ENABLED
+            return(1);
+#else
+            return(0);
+#endif
         default:
 	    break;
      }
Index: xmllint.c
===================================================================
RCS file: /cvs/gnome/libxml2/xmllint.c,v
retrieving revision 1.162
diff -u -p -r1.162 xmllint.c
--- xmllint.c	25 Apr 2006 16:17:53 -0000	1.162
+++ xmllint.c	11 Jul 2006 10:37:21 -0000
@@ -2752,6 +2752,7 @@ static void showVersion(const char *name
     if (xmlHasFeature(XML_WITH_DEBUG)) fprintf(stderr, "Debug "); 
     if (xmlHasFeature(XML_WITH_DEBUG_MEM)) fprintf(stderr, "MemDebug "); 
     if (xmlHasFeature(XML_WITH_DEBUG_RUN)) fprintf(stderr, "RunDebug "); 
+    if (xmlHasFeature(XML_WITH_ZLIB)) fprintf(stderr, "Zlib ");
     fprintf(stderr, "\n");
 }
 
Index: include/libxml/parser.h
===================================================================
RCS file: /cvs/gnome/libxml2/include/libxml/parser.h,v
retrieving revision 1.123
diff -u -p -r1.123 parser.h
--- include/libxml/parser.h	9 Jun 2006 19:46:46 -0000	1.123
+++ include/libxml/parser.h	11 Jul 2006 10:37:22 -0000
@@ -1206,6 +1206,7 @@ typedef enum {
     XML_WITH_DEBUG = 28,
     XML_WITH_DEBUG_MEM = 29,
     XML_WITH_DEBUG_RUN = 30,
+    XML_WITH_ZLIB = 31,
     XML_WITH_NONE = 99999 /* just to be sure of allocation size */
 } xmlFeature;
 
Index: include/libxml/xmlversion.h.in
===================================================================
RCS file: /cvs/gnome/libxml2/include/libxml/xmlversion.h.in,v
retrieving revision 1.58
diff -u -p -r1.58 xmlversion.h.in
--- include/libxml/xmlversion.h.in	14 Dec 2005 17:14:35 -0000	1.58
+++ include/libxml/xmlversion.h.in	11 Jul 2006 10:37:23 -0000
@@ -373,6 +373,15 @@ XMLPUBFUN void XMLCALL xmlCheckVersion(i
 #endif
 
 /**
+ * LIBXML_ZLIB_ENABLED:
+ *
+ * Whether the Zlib support is compiled in
+ */
+#if @WITH_ZLIB@
+#define LIBXML_ZLIB_ENABLED
+#endif
+
+/**
  * ATTRIBUTE_UNUSED:
  *
  * Macro used to signal to GCC unused function parameters