Package Details: icecat 115.12.0-1

Git Clone URL: (read-only, click to copy)
Package Base: icecat
Description: GNU version of the Firefox ESR browser
Upstream URL:
Keywords: browser esr gnuzilla web
Licenses: MPL-2.0
Submitter: None
Maintainer: figue (xiota)
Last Packager: xiota
Votes: 251
Popularity: 0.31
First Submitted: 2007-12-09 10:12 (UTC)
Last Updated: 2024-06-11 09:04 (UTC)

Dependencies (51)

Sources (6)

Pinned Comments

xiota commented on 2024-02-26 07:32 (UTC) (edited on 2024-05-15 05:23 (UTC) by xiota)

PKGBUILD has been updated. Major changes:

  • Downloads Firefox ESR and localization using the source array. Files are saved for reuse.
  • Saves freshly patched IceCat sources in a tarball for reuse.
  • Saves the PGO profile for reuse.


  • Wayland users, consider setting _build_pgo_xvfb=false. This will use xwayland-run for profiling.
  • PGO should work now, but if it doesn't and you're willing to go without, try _build_pgo=false.
  • Running out of RAM? Try adding mk_add_options MOZ_PARALLEL_BUILD=___ around line 300. Pick a value less than number of cores and free RAM in GB. For example, on a system with 8 cores, 64GB total RAM, but only 6 GB free, the value should be set to 4 or 5.
    • If a few people can confirm this is helpful, I will consider adding it as an additional option.
    • Main resource hog seems to be linking Leave a comment if you have a potential solution.

Having problems? Please provide details: processor make and model, number of cores, free -m, full log in pastebin, whether using AUR helper/makepkg/clean chroot, etc.

Latest Comments

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rev.cressy commented on 2024-06-12 13:54 (UTC)

curl: (33) HTTP server doesn't seem to support byte ranges. Cannot resume.
==> ERROR: Failure while downloading

removed sq from languages in PKGBUILD makepkg --sign --log -s Icecat is now building properly

rev.cressy commented on 2024-05-16 17:07 (UTC)

Thanks, Icecat needed to install rustup and remove the rust package. Built flawlessly! Great job :-)

xiota commented on 2024-04-29 17:38 (UTC)

@rev.cressy PKGBUILD has already been updated. Didn't bump pkgrel because people who built this before the Python 3.12 upgrade do not need to rebuild.

rev.cressy commented on 2024-04-29 17:07 (UTC)

tail icecat-115.10.0-1-x86_64-build.log 
  File "/home/leroy/src/icecat/src/icecat-115.10.0/testing/mozbase/mozrunner/mozrunner/base/", line 6, in <module>
    from .browser import BlinkRuntimeRunner, GeckoRuntimeRunner
  File "/home/leroy/src/icecat/src/icecat-115.10.0/testing/mozbase/mozrunner/mozrunner/base/", line 11, in <module>
    from ..application import DefaultContext, IceCatContext
  File "/home/leroy/src/icecat/src/icecat-115.10.0/testing/mozbase/mozrunner/mozrunner/", line 8, in <module>
    from distutils.spawn import find_executable
ModuleNotFoundError: No module named 'distutils'
Site not up-to-date reason: "/home/leroy/src/icecat/src/icecat-115.10.0/obj/_virtualenvs/common" does not exist
==> ERROR: A failure occurred in build().

xiota commented on 2024-04-20 10:22 (UTC)

I did notice seemed to be a huge bottleneck, but didn't look into its resource usage. Would be good to find a way to improve it.

viachaslavic commented on 2024-04-20 10:13 (UTC) (edited on 2024-04-20 10:15 (UTC) by viachaslavic)

@xiota thank you, it helped.

As for OOM, the main memory usage (about 30GB) is for linking (single thread). For my system with 16 GB of RAM, zram helped me complete the linking, while the compiler without it almost always had enough memory when building with 8 threads without adding the MOZ_PARALLEL_BUILD option.

xiota commented on 2024-04-19 02:22 (UTC)

@viachaslavic Found the problem and pushed an update that should fix it. Did not bump pkgrel because there is no need for people who successfully built to rebuild.

viachaslavic commented on 2024-04-18 23:52 (UTC)

How to build with one language (not es-ES) now? Setting the variable $_lang does not solve this.

Hunk #1 succeeded at 5 with fuzz 2.
Appending new data to the end of file: ./browser/locales/en-US/browser/preferences/preferences.ftl
Appending new data to the end of file: ./l10n/es-ES/browser/browser/preferences/preferences.ftl
makeicecat: line 347: ./l10n/es-ES/browser/browser/preferences/preferences.ftl: No such file or directory
==> ERROR: A failure occurred in prepare().