X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=README;h=f9437dba2857856b726cc4539b6deeafaf09f668;hp=a2cc296a480fe768d0b318cf9dcdd32002b656f6;hb=64c4cafd597aff7423be003dcf41735904126f66;hpb=48d848c7291ec22da6258ac03cd9c1dafec1fdfb

diff --git a/README b/README
index a2cc296..f9437db 100644
--- a/README
+++ b/README
@@ -8,7 +8,21 @@ BUILDING
 	./configure
 	make
 	make install
-	
+
+	Note:	Forcing 32-bit build:
+		* CFLAGS=-m32 ./configure
+
+		Forcing 64-bit build:
+		* CFLAGS=-m64 ./configure
+
+ARCHITECTURES SUPPORTED
+-----------------------
+
+Currently, x86 (only P6+), x86 64, PowerPC 32/64 and S390 are
+supported. The current use of sys_futex() makes it Linux-dependent, although
+this portability limitation might go away in a near future by using the pthread
+cond vars. Also, the restriction against i386, i486 and Pentium might go away if
+we integrate some of glibc runtime CPU-detection tests.
 
 QUICK START GUIDE
 -----------------