[OpenWrt-Devel] [PATCH 5/6] build: switch to Python 3

Petr Štetiar ynezz at true.cz
Mon Jun 17 16:08:55 EDT 2019


This patch switches Python used in buildroot to Python 3 as Python 2.x
series is going to be EOL relatively soon[1].

 "Being the last of the Python 2.x series, 2.7 will have an extended
  period of maintenance. Specifically, 2.7 will receive bugfix support
  until January 1, 2020. After the last release, 2.7 will receive no
  support."

It seems like Python 3 is going to be needed in order to support Meson
build system which has gained some traction recently.

Build tested on following targets:

 ath79/generic
 imx6/generic
 ipq40xx/generic
 lantiq/xway
 layerscape/armv7 (broken)
 layerscape/armv8_32b (broken)
 layerscape/armv8_64b (broken)
 mvebu/cortexa72
 ramips/mt7621
 ramips/mt7620
 sunxi/cortexa7
 x86/64

Layerscape targets are unfortunately left broken as their ls-rcw
firmware package uses Python 2 and converting it to Python 3 would take
more then reasoanble amount of time (I've tried to fix it already) and
would be better fixed by someone who can even run test it.

Run tested on ath79 (Archer C7 v5), ipq40xx (nbg6617) and x86_64 (QEMU
and apu2).

1. https://www.python.org/dev/peps/pep-0373/

Ref: PR#1937
Cc: Yangbo Lu <yangbo.lu at nxp.com>
Cc: Mathew McBride <matt at traverse.com.au>
Signed-off-by: Petr Štetiar <ynezz at true.cz>
---
 README                  |  2 +-
 include/prereq-build.mk | 15 +++++++++++----
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 55ca92af65f8..c867c1fa4da8 100644
--- a/README
+++ b/README
@@ -11,7 +11,7 @@ To build your own firmware you need a Linux, BSD or MacOSX system (case
 sensitive filesystem required). Cygwin is unsupported because of the lack
 of a case sensitive file system.
 
-You need gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff,
+You need gcc, binutils, bzip2, flex, python3.5+, perl, make, find, grep, diff,
 unzip, gawk, getopt, subversion, libz-dev and libc headers installed.
 
 1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index f7da916f648c..c52ca719087c 100644
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -141,10 +141,17 @@ $(eval $(call SetupHostCommand,wget,Please install GNU 'wget', \
 $(eval $(call SetupHostCommand,perl,Please install Perl 5.x, \
 	perl --version | grep "perl.*v5"))
 
-$(eval $(call SetupHostCommand,python,Please install Python 2.x, \
-	python2.7 -V 2>&1 | grep Python, \
-	python2 -V 2>&1 | grep Python, \
-	python -V 2>&1 | grep Python))
+$(eval $(call SetupHostCommand,python,Please install Python >= 3.5, \
+	python3.7 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3.6 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3.5 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?'))
+
+$(eval $(call SetupHostCommand,python3,Please install Python >= 3.5, \
+	python3.7 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3.6 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3.5 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?', \
+	python3 -V 2>&1 | grep -E 'Python 3\.[5-9]\.?'))
 
 $(eval $(call SetupHostCommand,git,Please install Git (git-core) >= 1.7.12.2, \
 	git --exec-path | xargs -I % -- grep -q -- --recursive %/git-submodule))
-- 
1.9.1


_______________________________________________
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
https://lists.openwrt.org/mailman/listinfo/openwrt-devel


More information about the openwrt-devel mailing list