X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=README.md;h=58db299018deb07f36fbdd1bad863ed35f82b3e0;hb=97d13221f8a1;hp=6b87b63719aa03eaa57d01a6bc671624bafd7c1f;hpb=d2916ca5c0c441284ee19cc5b9ba4d2e532768bc;p=userspace-rcu.git

diff --git a/README.md b/README.md
index 6b87b63..58db299 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
+<!--
+SPDX-FileCopyrightText: 2023 EfficiOS Inc.
+
+SPDX-License-Identifier: CC-BY-4.0
+-->
+
 Userspace RCU Implementation
 ============================
 
@@ -214,9 +220,10 @@ results in slower reads.
   1. `#include <urcu/urcu-signal.h>`
   2. Link the application with `-lurcu-signal`
 
-Version of the library that requires a signal, typically `SIGUSR1`. Can
-be overridden with `-DSIGRCU` by modifying `Makefile.build.inc`.
-
+NOTE: The `liburcu-signal` flavor is *deprecated* and will be removed in the
+future. It is now identical to `liburcu-mb` at the exception of the symbols and
+public header files. It is therefore slower than previous versions. Users are
+encouraged to migrate to the `liburcu-memb` flavor.
 
 ### Usage of `liburcu-bp`
 
@@ -434,6 +441,10 @@ still being used to iterate on a hash table.
 This option alters the rculfhash ABI. Make sure to compile both library
 and application with matching configuration.
 
+### Usage of `--enable-compiler-atomic-builtins`
+
+Building liburcu with `--enable-compiler-atomic-builtins` implements the uatomic
+API with the compiler atomic builtins if supported.
 
 Make targets
 ------------