added checks for libz and libxml2

diff --git a/configure.ac b/configure.ac
index 7e3d9e0..c8e39f1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -79,6 +79,12 @@ if test -z "$XGETTEXT" ; then
 fi
 dnl ==================================================
 dnl checks for libraries
+AC_CHECK_LIB([z], [gzopen],
+        [:],
+        AC_MSG_ERROR([libz not found. please install zlib-devel]))
+AC_CHECK_LIB([xml2], [xmlNewTextReader],
+        [:],
+        AC_MSG_ERROR([libxml2 not found. please install libxml2-devel]))
 dnl ==================================================
 dnl checks for header files
 dnl ==================================================