Initial 'configure' based compilation (buildconf generates configure script).

apache2/build/find_xml.m4

@@ -0,0 +1,57 @@
+dnl Check for XML Libraries
+dnl CHECK_LIBXML(ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND])
+dnl Sets:
+dnl  LIBXML_CFLAGS
+dnl  LIBXML_LIBS
+
+LIBXML_CONFIG="xml2-config"
+LIBXML_CFLAGS=""
+LIBXML_LIBS=""
+
+AC_DEFUN([CHECK_LIBXML],
+[dnl
+
+AC_ARG_WITH(
+    libxml,
+    [AC_HELP_STRING([--with-libxml=PATH],[Path to the libxml2 prefix])],
+    libxml_path="$withval",
+    :)
+
+dnl # Determine xml lib directory
+if test -z "${libxml_path}"; then
+    test_paths="/usr/local /usr"
+else
+    test_paths="${libxml_path}"
+fi
+
+AC_MSG_CHECKING([for ${LIBXML_CONFIG}])
+for x in ${test_paths}; do
+    if test -e "${x}/bin/${LIBXML_CONFIG}"; then
+        with_libxml="${x}"
+        break
+    else
+        with_libxml=""
+    fi
+done
+if test -n "${with_libxml}"; then
+    LIBXML_CONFIG="${with_libxml}/bin/${LIBXML_CONFIG}"
+    AC_MSG_RESULT([${LIBXML_CONFIG}])
+    LIBXML_CFLAGS="`${LIBXML_CONFIG} --cflags`"
+    LIBXML_LIBS="`${LIBXML_CONFIG} --libs`"
+    CFLAGS=$save_CFLAGS
+    LDFLAGS=$save_LDFLAGS
+else
+    AC_MSG_RESULT([no])
+fi
+
+AC_SUBST(LIBXML_LIBS)
+AC_SUBST(LIBXML_CFLAGS)
+
+if test -z "${LIBXML_LIBS}"; then
+  AC_MSG_NOTICE([*** libxml2 library not found.])
+  ifelse([$2], , AC_MSG_ERROR([libxml2 library is required]), $2)
+else
+  AC_MSG_NOTICE([using '${LIBXML_LIBS}' for libxml Library])
+  ifelse([$1], , , $1) 
+fi 
+])