author Brian Hackett <>
Wed, 14 Nov 2018 16:09:58 -1000
changeset 446931 1c7fc8389e012c987347efefca6b35f3948b742a
parent 343048 03804db09cf364ff228fc61409702d9a86d44ade
child 468486 5cc56532ff4a4b2b896f84e4b6e7889837acb42d
permissions -rw-r--r--
Bug 1507359 Part 2 - Bindings and internal changes to allow ReplayDebugger to control child pausing/resuming, r=mccr8.

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at


# A traditional rule would look like this:
#    backend.%:
#        @echo do stuff
# But with -j<n>, and multiple items in BUILD_BACKEND_FILES, the command would
# run multiple times in parallel.
# "Fortunately", make has some weird semantics for pattern rules: if there are
# multiple targets in a pattern rule and each of them is matched at most once,
# the command will only run once. So:
#     backend%RecursiveMakeBackend backend%FasterMakeBackend:
#         @echo do stuff
#     backend: backend.RecursiveMakeBackend backend.FasterMakeBackend
# would only execute the command once.
# Credit where due:
$(subst .,%,$(BUILD_BACKEND_FILES)):
	@echo 'Build configuration changed. Regenerating backend.'

define build_backend_rule
$(1): $$(wildcard $$(shell cat $(1).in))

$(foreach file,$(BUILD_BACKEND_FILES),$(eval $(call build_backend_rule,$(file))))