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Makefile: delete default rules

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We don't use the default implicit rules that are added by make, so
they just slow down the Makefile processing. The default implicit
rules can be removed by defining an empty .SUFFIXES: target.

This speeds up the start of the build on my machine from 5.6s to
4.9s.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Arnout Vandecappelle 2016-11-05 22:05:08 +01:00 committed by Thomas Petazzoni
parent dbc5f228b2
commit 6bb7430a20
1 changed files with 3 additions and 0 deletions
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Makefile
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@ -24,6 +24,9 @@
# You shouldn't need to mess with anything beyond this point...
#--------------------------------------------------------------
# Delete default rules. We don't use them. This saves a bit of time.
.SUFFIXES:
# we want bash as shell
SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \