Detect and use xsltCleanupGlobals when available

This introduces usage of an additional libxslt cleanup function,
xsltCleanupGlobals, when the configure script detects that it is
available. Early versions of the library did not include this function.

(closes issue ASTERISK-22570)
Reported by: Corey Farrell
Patches:
    xsltCleanupGlobals.patch uploaded by Corey Farrell (License 5909)
........

Merged revisions 400384 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@400385 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 400078 .
+# From configure.ac Revision: 400186 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for asterisk trunk.
 #
@@ -967,6 +967,10 @@ PBX_LTDL
 LTDL_DIR
 LTDL_INCLUDE
 LTDL_LIB
+PBX_LIBXSLT_CLEANUP
+LIBXSLT_CLEANUP_DIR
+LIBXSLT_CLEANUP_INCLUDE
+LIBXSLT_CLEANUP_LIB
 PBX_LIBXSLT
 LIBXSLT_DIR
 LIBXSLT_INCLUDE
@@ -9591,6 +9595,18 @@ fi
 
 
 
+LIBXSLT_CLEANUP_DESCRIP="LibXSLT Library Cleanup Function"
+LIBXSLT_CLEANUP_OPTION=libxslt
+LIBXSLT_CLEANUP_DIR=${LIBXSLT_DIR}
+
+PBX_LIBXSLT_CLEANUP=0
+
+
+
+
+
+
+
     LTDL_DESCRIP="libtool"
     LTDL_OPTION="ltdl"
     PBX_LTDL=0
@@ -12972,6 +12988,110 @@ fi
 
 
 
+if test "x${PBX_LIBXSLT_CLEANUP}" != "x1" -a "${USE_LIBXSLT_CLEANUP}" != "no"; then
+   pbxlibdir=""
+   # if --with-LIBXSLT_CLEANUP=DIR has been specified, use it.
+   if test "x${LIBXSLT_CLEANUP_DIR}" != "x"; then
+      if test -d ${LIBXSLT_CLEANUP_DIR}/lib; then
+         pbxlibdir="-L${LIBXSLT_CLEANUP_DIR}/lib"
+      else
+         pbxlibdir="-L${LIBXSLT_CLEANUP_DIR}"
+      fi
+   fi
+   pbxfuncname="xsltCleanupGlobals"
+   if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
+      AST_LIBXSLT_CLEANUP_FOUND=yes
+   else
+      ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
+      CFLAGS="${CFLAGS} ${LIBXML2_INCLUDE}"
+      as_ac_Lib=`$as_echo "ac_cv_lib_xslt_${pbxfuncname}" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${pbxfuncname} in -lxslt" >&5
+$as_echo_n "checking for ${pbxfuncname} in -lxslt... " >&6; }
+if eval \${$as_ac_Lib+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lxslt ${pbxlibdir} ${LIBXML2_LIB} $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${pbxfuncname} ();
+int
+main ()
+{
+return ${pbxfuncname} ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$as_ac_Lib=yes"
+else
+  eval "$as_ac_Lib=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+eval ac_res=\$$as_ac_Lib
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
+  AST_LIBXSLT_CLEANUP_FOUND=yes
+else
+  AST_LIBXSLT_CLEANUP_FOUND=no
+fi
+
+      CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
+   fi
+
+   # now check for the header.
+   if test "${AST_LIBXSLT_CLEANUP_FOUND}" = "yes"; then
+      LIBXSLT_CLEANUP_LIB="${pbxlibdir} -lxslt ${LIBXML2_LIB}"
+      # if --with-LIBXSLT_CLEANUP=DIR has been specified, use it.
+      if test "x${LIBXSLT_CLEANUP_DIR}" != "x"; then
+         LIBXSLT_CLEANUP_INCLUDE="-I${LIBXSLT_CLEANUP_DIR}/include"
+      fi
+      LIBXSLT_CLEANUP_INCLUDE="${LIBXSLT_CLEANUP_INCLUDE} ${LIBXML2_INCLUDE}"
+      if test "xlibxslt/xsltInternals.h" = "x" ; then	# no header, assume found
+         LIBXSLT_CLEANUP_HEADER_FOUND="1"
+      else				# check for the header
+         ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
+         CPPFLAGS="${CPPFLAGS} ${LIBXSLT_CLEANUP_INCLUDE}"
+         ac_fn_c_check_header_mongrel "$LINENO" "libxslt/xsltInternals.h" "ac_cv_header_libxslt_xsltInternals_h" "$ac_includes_default"
+if test "x$ac_cv_header_libxslt_xsltInternals_h" = xyes; then :
+  LIBXSLT_CLEANUP_HEADER_FOUND=1
+else
+  LIBXSLT_CLEANUP_HEADER_FOUND=0
+fi
+
+
+         CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
+      fi
+      if test "x${LIBXSLT_CLEANUP_HEADER_FOUND}" = "x0" ; then
+         LIBXSLT_CLEANUP_LIB=""
+         LIBXSLT_CLEANUP_INCLUDE=""
+      else
+         if test "x${pbxfuncname}" = "x" ; then		# only checking headers -> no library
+            LIBXSLT_CLEANUP_LIB=""
+         fi
+         PBX_LIBXSLT_CLEANUP=1
+         cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBXSLT_CLEANUP 1
+_ACEOF
+
+      fi
+   fi
+fi
+
+
+
 fi
 
 # some embedded systems omit internationalization (locale) support

configure.ac

@@ -415,6 +415,7 @@ AST_LIBCURL_CHECK_CONFIG([], [7.10.1])
 AST_EXT_LIB_SETUP([LIBEDIT], [NetBSD Editline library], [libedit], [, use 'internal' Editline otherwise])
 AST_EXT_LIB_SETUP([LIBXML2], [LibXML2], [libxml2])
 AST_EXT_LIB_SETUP([LIBXSLT], [LibXSLT], [libxslt])
+AST_EXT_LIB_SETUP_OPTIONAL([LIBXSLT_CLEANUP], [LibXSLT Library Cleanup Function], [LIBXSLT], [libxslt])
 AST_EXT_LIB_SETUP([LTDL], [libtool], [ltdl])
 AST_EXT_LIB_SETUP([LUA], [Lua], [lua])
 AST_EXT_LIB_SETUP([MISDN], [mISDN user], [misdn])
@@ -570,6 +571,7 @@ if test "${disable_xmldoc}" != "yes"; then
 	fi
 
         AST_EXT_LIB_CHECK([LIBXSLT], [xslt], [xsltLoadStylesheetPI], [libxslt/xsltInternals.h], [${LIBXML2_LIB}], [${LIBXML2_INCLUDE}])
+        AST_EXT_LIB_CHECK([LIBXSLT_CLEANUP], [xslt], [xsltCleanupGlobals], [libxslt/xsltInternals.h], [${LIBXML2_LIB}], [${LIBXML2_INCLUDE}])
 
 fi
 

include/asterisk/autoconfig.h.in

@@ -400,6 +400,9 @@
 /* Define to 1 if you have the LibXSLT library. */
 #undef HAVE_LIBXSLT
 
+/* Define to 1 if LIBXSLT has the LibXSLT Library Cleanup Function feature. */
+#undef HAVE_LIBXSLT_CLEANUP
+
 /* Define to 1 if you have the <limits.h> header file. */
 #undef HAVE_LIMITS_H
 

main/xml.c

@@ -55,6 +55,9 @@ int ast_xml_init(void)
 int ast_xml_finish(void)
 {
 	xmlCleanupParser();
+#ifdef HAVE_LIBXSLT_CLEANUP
+	xsltCleanupGlobals();
+#endif
 
 	return 0;
 }