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esp-open-sdk build error - python is missing or unusable (debian)

Posted: Thu May 26, 2016 12:32 am
by gojimmypi
I'll start with the solution. I needed to:

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sudo apt-get install python2.7-dev
(that apparently did not need to previously be installed, as I was able to compile prior to recent updates)

Now for the problem (in case others search for it).

I had the previous compile working... for quite some time... but this new one turned out to be a bit more challenging for me. I purged all of the old stuff - wiping out the esp-open-sdk completely. I then fetch & compile like this:

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cd ~/workspace/esp-open-sdk
make clean
git pull
git submodule sync
git submodule update --init
make
all goes well, but then I would get an error like this when almost done:

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[INFO ]  Installing C library
[INFO ]  Installing C library: done in 42.67s (at 12:09)
[INFO ]  =================================================================
[INFO ]  Installing final gcc compiler
[INFO ]  Installing final gcc compiler: done in 412.31s (at 19:01)
[INFO ]  =================================================================
[INFO ]  Installing cross-gdb
[ERROR]    configure: error: python is missing or unusable
[ERROR]    make[4]: *** [configure-gdb] Error 1
[ERROR]    make[3]: *** [all] Error 2
[ERROR]
[ERROR]  >>
[ERROR]  >>  Build failed in step 'Installing cross-gdb'
[ERROR]  >>        called in step '(top-level)'
[ERROR]  >>
[ERROR]  >>  Error happened in: CT_DoExecLog[scripts/functions@257]
[ERROR]  >>        called from: do_debug_gdb_build[scripts/build/debug/300-gdb.sh@120]
[ERROR]  >>        called from: do_debug[scripts/build/debug.sh@35]
[ERROR]  >>        called from: main[scripts/crosstool-NG.sh@646]
[ERROR]  >>
[ERROR]  >>  For more info on this error, look at the file: 'build.log'
[ERROR]  >>  There is a list of known issues, some with workarounds, in:
[ERROR]  >>      'share/doc/crosstool-ng/crosstool-ng-1.22.0-55-gecfc19a/B - Known issues.txt'
[ERROR]
[ERROR]  (elapsed: 20:14.68)
[20:15] / ct-ng:152: recipe for target 'build' failed
There's nothing related in the known issues file. The build.log has the basically the same log file info displayed, but with an additional note just before the error that has a "no" for python2.7:

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[ALL  ]    checking for XML_StopParser... yes
[ALL  ]    checking whether to use python... yes
[ALL  ]    checking for python... /usr/bin/python
[ALL  ]    checking for python2.7... no
[ERROR]    configure: error: python is missing or unusable
[ALL  ]    Makefile:8724: recipe for target 'configure-gdb' failed
[ERROR]    make[4]: *** [configure-gdb] Error 1
Here's my python info:

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me@mymachine:~$ apt-cache policy python
python:
  Installed: 2.7.9-1
  Candidate: 2.7.9-1
  Version table:
 *** 2.7.9-1 0
        500 http://ftp.us.debian.org/debian/ jessie/main amd64 Packages
        100 /var/lib/dpkg/status
me@mymachine:~$ apt-cache policy python3
python3:
  Installed: 3.4.2-2
  Candidate: 3.4.2-2
  Version table:
 *** 3.4.2-2 0
        500 http://ftp.us.debian.org/debian/ jessie/main amd64 Packages
        100 /var/lib/dpkg/status
if I launch python, it seems to work, and the default is v2.7:

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$ python
Python 2.7.9 (default, Mar  1 2015, 12:57:24)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> print "hello world"
hello world
it is not python that was a problem, but the missing python2.7-dev !

and so I've updated my building script described here: http://forum.micropython.org/viewtopic. ... 9769#p9769 or more specifically on github here https://github.com/gojimmypi/build_esp8266 - those are my own instructions & notes! the official build instructions are here: http://forum.micropython.org/viewtopic.php?f=16&t=1689

@pfalcon - perhaps the python2.7-dev could be added here: https://github.com/pfalcon/esp-open-sdk as well?

hopefully this helps someone...

btw the official build instructions are here: http://forum.micropython.org/viewtopic.php?f=16&t=1689

Re: esp-open-sdk build error - python is missing or unusable (debian)

Posted: Thu May 26, 2016 3:45 am
by ideal2545
It seems this issue just started happening with some recent change for sure, I've been building it for a little while now and all of a sudden this happened to me yesterday. i also had to install something else for the first time... can't think of the name now.

Re: esp-open-sdk build error - python is missing or unusable (debian)

Posted: Thu May 26, 2016 12:31 pm
by platforma
Just hit the same problem after reading your post and trying to update sdk. Looking at the error log, cross-gdb does indeed need some python headers. I don't know if this happened since the last gcc update in crosstool-NG or there's another reason.

Re: esp-open-sdk build error - python is missing or unusable (debian)

Posted: Thu May 26, 2016 8:22 pm
by Roberthh
I ran into the problem too.

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make PYTHON=python3
fixed it for me.

Re: esp-open-sdk build error - python is missing or unusable (debian)

Posted: Fri May 27, 2016 1:11 am
by PinkInk
Installing python2.7-dev fixed it for me on latest Ubuntu

Tim