Hello All, I sent this to the WSJT Devel upstream group initially, but this may be the right place to get it resolved.
Any assistance would be much appreciated. 73's Greg, KI7MT -------- Forwarded Message -------- Subject: WSJT/WSPR Python3-Pillow 2.6.1 Issue Date: Tue, 14 Apr 2015 10:50:28 -0600 From: KI7MT <[email protected]> To: WSJT software development <[email protected]> Hello All, While updating WSJT/WSPR build documentation, I've come full circle on the Python3-Pillow 2.6.1 segfault problem that many have reported. I'm need of assistance in trying to debug / generate a work around, as this has gone well past my level of knowledge with Python. This issue affects both Windows and *Nix, but "seems" to be isolated to the Pillow 2.6.1. THE PROBLEM When using Pillow 2.6.1, WSPR and WSJT will both segfault, almost immediately, either at decode time for WSPR ( sample *.wav file or T=50 to 55 of the 2min cycle ) or at the end of the first FSK441 cycle ( first whole minute? ) with WSJT. Neither application present the issue when using Pillow < or > 2.6.1 on my test distro's. TESTING PERFORMED I've performed several tests with various versions of Pillow, primarily on Linux. On my Ubuntu based installs, after installing JTSDK Nix, those distros using python3-pil 2.6.1 ( Ubuntu 14.10, Debian Jessie for example ) will build correctly but fail as above. Removing python3-pil and python3-pil.imagetk, installing the required build dependencies: libtiff4-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms2-dev libwebp-dev tcl8.6-dev tk8.6-dev then installing ( via pip3 ) Pillow==2.5.3, ==2.7.0 or ==2.8.1 ( the latest Pillow release ), neither WSJT nor WSPR present the segfault. At this point, I would think the import instructions in WSPR.py an WSJT.py are OK, but I don't know where or how to take this any further. Without getting this resolved, we will not be able to update WSJT / WSPR in any distro using Pillow 2.6.1 as the default package (Ubuntu 14.10 and Debian Jessie at present ). I believe there are Fedora based distros also using Pillow-2.6.1, but I am not as familiar with their package structures, so I cannot say for sure which ones. Any input or debugging suggestions would be much appreciated. 73's Greg, KI7MT _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-hams-devel Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-hams-devel More help : https://help.launchpad.net/ListHelp
