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client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="Andrew.Cooper3@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: fCGu3BYvkWEv6yX46Jb4PxEiv9kjtW+UKKFmu5T7Pt8jqkfzQ4m8JwDy2XSi0RyqDG05nXtS2C OSZSKm2qVeTi6qXVOQgfQv5+J4r1JEM3dBRQQOYnpTmENyyTCjy4W/qFV8l5ziXqXmKAGmipR2 xp6EESP37KexqgXK+qpNwqqdRrH3HlSpXuuyleCHxkphaNwWsyBN1qtBbyMb6pxuh8bACvcBIc rHfZtoIqUgEqsU4FjObGSWeyuqx3BU1esivfGKNm7CaV9aOsyJDAQaLD88/aqfqWS7+kbAE+h2 Yi4= X-SBRS: 2.7 X-MesageID: 9704956 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.69,288,1571716800"; d="scan'208";a="9704956" From: Andrew Cooper To: Xen-devel Date: Sat, 7 Dec 2019 16:52:52 +0000 Message-ID: <20191207165252.1045-3-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20191207165252.1045-1-andrew.cooper3@citrix.com> References: <20191207165252.1045-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 2/2] xen/build: Automatically locate a suitable python interpreter X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , Stefano Stabellini , Julien Grall , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Steven Haigh , Jan Beulich , Ian Jackson Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Needing to pass PYTHON=python3 into hypervisor builds is irritating and unnecessary. Locate a suitable interpreter automatically, defaulting to Py3 if it is available. Reported-by: Steven Haigh Signed-off-by: Andrew Cooper --- CC: George Dunlap CC: Ian Jackson CC: Jan Beulich CC: Konrad Rzeszutek Wilk CC: Stefano Stabellini CC: Wei Liu CC: Julien Grall CC: Steven Haigh CC: Juergen Gross For 4.13. This is a very-nice-to-have WRT our Py3-clean intention. --- xen/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/Makefile b/xen/Makefile index 99701e3165..b936d1812b 100644 --- a/xen/Makefile +++ b/xen/Makefile @@ -12,6 +12,8 @@ export XEN_BUILD_DATE ?= $(shell LC_ALL=C date) export XEN_BUILD_TIME ?= $(shell LC_ALL=C date +%T) export XEN_BUILD_HOST ?= $(shell hostname) export XEN_CONFIG_EXPERT ?= n +# Best effort attempt to find a python interpreter +export PYTHON ?= $(word 1,$(shell which python3 python python2)) export BASEDIR := $(CURDIR) export XEN_ROOT := $(BASEDIR)/..