documented GNUTLS_SKIP_GLOBAL_INIT macro

1 files changed, 4 insertions, 1 deletions

diff --git a/doc/cha-gtls-app.texi b/doc/cha-gtls-app.texi
index e31bcd2c0f..ce48be7c4f 100644
--- a/doc/cha-gtls-app.texi
+++ b/doc/cha-gtls-app.texi
@@ -290,7 +290,10 @@ library.
 @node Initialization
 @subsection Initialization
 
-The GnuTLS library is initialized on load; prior to 3.3.0 was initialized by calling @funcref{gnutls_global_init}. 
+The GnuTLS library is initialized on load; prior to 3.3.0 was initialized by calling @funcref{gnutls_global_init}@footnote{
+The original behavior of requiring explicit initialization can obtained by setting the
+GNUTLS_NO_EXPLICIT_INIT environment variable to 1, or by using the macro GNUTLS_SKIP_GLOBAL_INIT
+in a global section of your program.}. 
 The initialization typically enables CPU-specific acceleration, performs any required
 precalculations needed, opens any required system devices (e.g., /dev/urandom on Linux)
 and initializes subsystems that could be used later.