Pkgsrc-2017Q3 Firefox on sparc64

Hi, has anyone been able to run firefox-55.0.3nb1 on sparc64? I built
this version on NetBSD-8 from pkgsrc-2017Q3 but it crashes on startup

libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
1509007327659   addons.xpi      WARN    Error parsing extensions state: [Exception... "Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [amIAddonManagerStartup.readStartupData]"  nsresult: "0x80520012 (NS_ERROR_FILE_NOT_FOUND)"  location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm :: loadExtensionState :: line 1596"  data: no] Stack trace: loadExtensionState()@resource://gre/modules/addons/XPIProvider.jsm:1596 < getInstallState()@resource://gre/modules/addons/XPIProvider.jsm:1631 < checkForChanges()@resource://gre/modules/addons/XPIProvider.jsm:3152 < startup()@resource://gre/modules/addons/XPIProvider.jsm:2246 < callProvider()@resource://gre/modules/AddonManager.jsm:271 < _startProvider()@resource://gre/modules/AddonManager.jsm:741 < startup()@resource
 ://gre/modules/AddonManager.jsm:908 < startup()@resource://gre/modules/AddonManager.jsm:3122 < observe()@addonManager.js:65

[1]   Illegal instruction (core dumped) firefox --safe-mode


Not sure if the above warning messages have anything to do with it.

Also, can anyone recommend alternative web browser that works
reasonably well on sparc64? These days most recent versions of software
seems to be designed to work only on Linux x86.