wget https://raw.githubusercontent.com/Homebrew/formula-patches/677cb38/center-im/patch-libjabber_jconn.c.diff
echo 'Creating brew-patch.diff'
cat << EOF >> brew-patch.diff
diff --git a/libicq2000/libicq2000/sigslot.h b/libicq2000/libicq2000/sigslot.h
index b7509c0..024774f 100644
--- a/libicq2000/libicq2000/sigslot.h
+++ b/libicq2000/libicq2000/sigslot.h
@@ -82,6 +82,7 @@
 #ifndef SIGSLOT_H__
 #define SIGSLOT_H__

+#include <cstdlib>
 #include <set>
 #include <list>
EOF