[Buildroot] [PATCH for-next] Makefile: delete default rules
Arnout Vandecappelle (Essensium/Mind)
arnout at mind.be
Sat Nov 5 21:05:08 UTC 2016
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 at mind.be>
---
Makefile | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Makefile b/Makefile
index 4ea64b3..6cf5f1c 100644
--- a/Makefile
+++ b/Makefile
@@ -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; \
--
2.9.3
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