sebastiendarocha:

Supply the following if possible:

• Device problem occurs on
  When building a image of the firmware (for example a TP-Link Archer C7 v2/v4 or a WR1043NDv4). The problems occurs on the compiling host (Ubuntu 16.04 on a x86_64)

• Software versions of OpenWrt/LEDE release, packages, etc.
  I used several snapshots of the image builder and even the trunk (commit a18d88e), used to work on LEDE 17.1.0

• Steps to reproduce

0. untar the imagebuilder
1. add "src/gz wifirover http://downloads.altsysnet.com/wifirover/lede/testing/" to the repositories.conf of the imagebuilder.
2. make a image, say for Archer C7v4:
   make image PROFILE=archer-c7-v4 PACKAGES="wifirover"

Expected: Compilation succeeds
Happens: opkg segfaults

Installing packages...
Makefile:134: recipe for target 'package_install' failed
make[2]: *** [package_install] Segmentation fault (core dumped)
Makefile:100: recipe for target '_call_image' failed
make[1]: *** [_call_image] Error 2
Makefile:175: recipe for target 'image' failed
make: *** [image] Error 2


the Packages files is like this
Package: wifirover
Version: 2017-05-1
Description: WifiRover Captive portal
Section: extras
Priority: optional
Maintainer: Olivier Fontes olivier@altsysnet.com, Sebastien DA ROCHA sebastien@altsysnet.com
License: LGPL 2.1
Architecture: all
OE: wifirover
Source: https://github.com/altsysnet/wifirover
Depends: firewall, base-files, base-files, php7, dnsmasq-full
Replaces: firewall, base-files, base-files, php7, dnsmasq-full
MD5Sum: 38f9caf3692ae69ac04c3a7d6ab6908a
Size: 20757
Filename: wifirover_2017-05-1.ipk

If I remove the "Replaces:" tag the run go on, but it fails because I've put custom files on my wifirover package, such as php.ini, /etc/firewall.user...

• my analysis :
  I've compiled opkg based on https://git.openwrt.org/project/opkg-lede.git with debug enabled.

The segfaults happens just by making :
sudo opkg-cl -f repositories.conf update
opkg-cl -f repositories.conf install wifirover

using gdb, I get

10:22 sebastien@ubuntu-N750HU: /tmp/17010/openwrt-imagebuilder-ar71xx-generic.Linux-x86_64$ gdb opkg-cl
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/.
Find the GDB manual and other documentation resources online at:
http://www.gnu.org/software/gdb/documentation/.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from opkg-cl...done.
(gdb) run -f repositories.conf install wifirover
Starting program: /usr/local/bin/opkg-cl -f repositories.conf install wifirover
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
pkg_conflicts_abstract (pkg=pkg@entry=0x6278e0, conflictee=conflictee@entry=0x62d1c0)
at /home/sebastien/Sources/opkg-lede/libopkg/pkg_depends.c:472
472 for (conflict = conflicts; conflict->type; conflict++) {
(gdb)


And thats where I'm stuck on my analysis :-(