X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=README;h=4423fc53821c0c62244481cd8e94d8e4c837fc4f;hp=2687382e2bc785ac9db704f4f01aea2eab7ce18e;hb=af147b83c4f67d99e6582f15eea5cb2ae51b8d36;hpb=ee39cfb61d2a389db3342751762412f332a3e851

diff --git a/README b/README
index 2687382..4423fc5 100644
--- a/README
+++ b/README
@@ -28,6 +28,18 @@ Currently, x86 (i386, i486, i586, i686), x86 64-bit, PowerPC 32/64, S390, S390x
 and Sparcv9 32/64 are supported. Only tested on Linux so far, but should
 theoretically work on other operating systems.
 
+Alpha and ia64 architectures are supported, but depend on 4.x gcc with atomic
+builtins support.
+
+The gcc compiler versions 3.3, 3.4, 4.0, 4.1, 4.2, 4.3, 4.4 and 4.5 are
+supported, with the following exceptions:
+
+- gcc 3.3 and 3.4 have a bug that prevents them from generating volatile
+  accesses to offsets in a TLS structure on 32-bit x86. These versions are
+  therefore not compatible with liburcu on x86 32-bit (i386, i486, i586, i686).
+  The problem has been reported to the gcc community:
+    http://www.mail-archive.com/gcc-bugs@gcc.gnu.org/msg281255.html
+
 QUICK START GUIDE
 -----------------