README: Added a note about flex/bison.

diff --git a/README b/README
index e7054c9a90378b0a9e28c8ba5bdfed64d8274400..56dde37d9365cbc8ac73939635b6880844140992 100644 (file)
--- a/README
+++ b/README
@@ -19,6 +19,10 @@ Prerequisites
 
   * A build environment: autotools, libtool, C compiler, ...
 
+  * When building from Git, you also need the flex lexical analyzer generator
+    and bison parser generator (other lex and yacc compatible tools might work
+    as well if you are lucky).
+
   * A POSIX + Single UNIX Specification compatible C library.
 
   * asciidoc, xsltproc, xmlto: