add WIP warnings

diff --git a/README.md b/README.md
index 164a7982ad3f927e934a21b2ce5810b74c6c6bff..72170a977f30a6828db4a08bae69847638c4ba47 100644 (file)
--- a/README.md
+++ b/README.md
@@ -12,6 +12,9 @@ The acronym PSI may be read as:
 The latter because PSI can be configured to include declarations for most of the
 [base definitions and system interfaces of POSIX.1-2008](http://pubs.opengroup.org/onlinepubs/9699919799/).
 
+> **WARNING:**  
+> This is heavy WIP. Only a small part of configuration and implementation has been completed yet.
+
 ## Features
 
 * standard scalar types mapped to stdint types
@@ -22,6 +25,9 @@ The latter because PSI can be configured to include declarations for most of the
 
 ## Installing
 
+> **WARNING:**  
+> This is heavy WIP. Installation only works from a source checkout yet.
+
 ### PECL
 
 This extension is distributed through [PECL](http://pecl.php.net) and can be
@@ -105,6 +111,11 @@ The following modules are available to select:
 ### --with-psi-libffi
 **Path to libffi.**
 
+> **WARNING:**  
+> We currently rely on a patched libjit, because of an apparent bug in how
+> libjit creates closures, which still needs to be verified, though.  
+> See https::/github.com/m6w6/libjit for the preliminary patch.
+
 ## Configuring PSI at runtime
 
 ### psi.engine