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[Xen-changelog] [xen staging] README: Document python2 dependency

commit 4deeaf2a3ee50b096426eea41a4c9b96ded0f029
Author:     George Dunlap <george.dunlap@xxxxxxxxxx>
AuthorDate: Tue Mar 5 12:48:52 2019 +0000
Commit:     Wei Liu <wei.liu2@xxxxxxxxxx>
CommitDate: Wed Mar 6 14:42:49 2019 +0000

    README: Document python2 dependency
    Much of the tools and configure makefile actually have a python2
    dependency; specify this.  It also assumes that `python` points to 
    document how to work around this on systems where this is false.
    Also update second version requirement listed to match the first.
    Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
    Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
    Release-acked-by: Juergen Gross <jgross@xxxxxxxx>
 README | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/README b/README
index 7807e93639..c19409efa2 100644
--- a/README
+++ b/README
@@ -46,7 +46,7 @@ provided by your OS distributor:
         - GCC 4.8 or later
         - GNU Binutils 2.24 or later
     * Development install of zlib (e.g., zlib-dev)
-    * Development install of Python v2.4 or later (e.g., python-dev)
+    * Development install of Python 2, v2.4 or later (e.g., python-dev)
     * Development install of curses (e.g., libncurses-dev)
     * Development install of openssl (e.g., openssl-dev)
     * Development install of x11 (e.g. xorg-x11-dev)
@@ -177,10 +177,16 @@ Python Runtime Libraries
 Various tools, such as pygrub, have the following runtime dependencies:
-    * Python 2.3 or later.
+    * Python 2, v2.4 or later.
           URL:    http://www.python.org/
           Debian: python
+Note that the build system expects `python` to be python2.  If your system
+has `python` pointing to python3 (as in the case of Arch Linux or Anaconda),
+you'll need to specify a path to a python2 binary when running configure:
+    PYTHON=/usr/bin/python2 ./configure
 Intel(R) Trusted Execution Technology Support
generated by git-patchbot for /home/xen/git/xen.git#staging

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