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[build] default to parallel make for aircrafts

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This commit is contained in:
Felix Ruess
2014-12-02 22:38:13 +01:00
parent a008da49b4
commit d3494f6ff9
1 changed files with 4 additions and 5 deletions
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Makefile.ac
+4 -5
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@@ -60,12 +60,12 @@ else
MKTEMP = mktemp
endif
# detection of number of processors for parallel compilation
# by passing J=AUTO from toplevel make.
# By default, detect number of processors for parallel compilation
# same as passing J=AUTO from toplevel make.
# Number of processes can also be explicitly set with e.g. J=4
# Calling make without a J variable is the same as J=1 (serial compilation)
# For serial compilation, call make with J=1
NPROCS := 1
ifdef J
J ?= AUTO
ifeq ($J,AUTO)
ifeq ($(UNAME),Linux)
NPROCS := $(shell grep -c ^processor /proc/cpuinfo)
@@ -74,7 +74,6 @@ else ifeq ($(UNAME),Darwin)
endif # $(UNAME)
else # not auto, explicitly specified
NPROCS := $J
endif # $J
endif