More details here: https://developer.mozilla.org/en/docs/Simple_Firefox_build
Get Firefox' source code:
git clone https://github.com/mozilla/gecko-dev.git
git checkout fx-team
Install dependencies:
./mach bootstrap
# doesn't work on Windows. See link above.
On osx (not needed for other platforms), create a mozconfig file in the source directory, with the following:
# adding .noindex will make sure spotlight
# won't index the objdir (slow).
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/obj.firefox.noindex
# Needed for osx 10.9 (fix a font issue):
ac_add_options --with-macos-sdk=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk
Run the following in the dir
./mach build
Wait a while...
./mach run -P dev
Firefox (frontend & devtools) code is located in:
browser/base/content
browser/themes
browser/devtools
Generate a patch:
In your ~/.gitconfig, add:
[alias]
hgp = "show --binary --format=\"# HG changeset patch%n# User %an <%ae>%n%B\" -U8"
Then:
git hgp HEAD > myFix.patch
# you can attach this patch to a bugzilla bug
Updated with changes? Run the following
./mach build browser
./mach run -P dev -jsconsole
Running tests for the entire suite
./mach mochitest-devtools browser/devtools
Running tests for a particular patch
./mach mochitest-devtools browser/devtools/path/to/the/test_you_want_to_run.js