docs: update README to include Clang

Xen now builds on x86 with Clang 3.5 and 3.8.  Update README to reflect this.

Mark Clang as no longer a permitted failure in Travis, to prevent future
regressions slipping back in.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Doug Goldstein <cardoe@cardoe.com>

diff --git a/.travis.yml b/.travis.yml
index 189d568e3eab193de0cbb452422ed2a41052d4b3..b84d38fb223fb24c79742651e7c47ce788bfd07b 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,8 +2,6 @@ language: c
 dist: trusty
 sudo: required
 matrix:
-    allow_failures:
-        - compiler: clang
     include:
         - compiler: gcc
           env: XEN_TARGET_ARCH=x86_64

diff --git a/README b/README
index dd36ec89b47b31c3670e8241ad05fe4b2b1d4536..fe2e7c6924b6449aa85a27f777c9847f701114e6 100644 (file)
--- a/README
+++ b/README
@@ -35,13 +35,16 @@ Second, there are a number of prerequisites for building a Xen source
 release. Make sure you have all the following installed, either by
 visiting the project webpage or installing a pre-built package
 provided by your OS distributor:
-    * GCC
-      - For x86 4.1.2_20070115 or later
-      - For ARM 4.8 or later
     * GNU Make v3.80 or later
-    * GNU Binutils:
-      - For x86 2.16.91.0.5 or later
-      - For ARM 2.24 or later
+    * C compiler and linker:
+      - For x86:
+        - GCC 4.1.2_20070115 or later
+        - GNU Binutils 2.16.91.0.5 or later
+        or
+        - Clang/LLVM 3.5 or later
+      - For ARM:
+        - GCC 4.8 or later
+        - GNU Binutils 2.24 or later
     * Development install of zlib (e.g., zlib-dev)
     * Development install of Python v2.3 or later (e.g., python-dev)
     * Development install of curses (e.g., libncurses-dev)