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build: use ninja default for -jN unless set 

It makes sense to trust ninja on selecting the number of cores. This is
also sensible in order not to change existing setups.
This commit is contained in:
Julian Oes 2020-05-26 09:20:33 +02:00
parent 0ec9287457
commit 6afdc2c376
1 changed files with 10 additions and 4 deletions
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14
Makefile
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@ -74,8 +74,6 @@ ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS))
# https://stackoverflow.com/a/33616144/8548472
MAKE_PID := $(shell echo $$PPID)
j := $(shell ps T | sed -n 's/.*$(MAKE_PID).*$(MAKE).* \(-j\|--jobs\) *\([0-9][0-9]*\).*/\2/p')
# Default to 4
j := $(or $(j),4)
NINJA_BIN := ninja
ifndef NO_NINJA_BUILD
@ -92,9 +90,14 @@ ifdef NINJA_BUILD
PX4_MAKE := $(NINJA_BIN)
ifdef VERBOSE
PX4_MAKE_ARGS := -j $(j) -v
PX4_MAKE_ARGS := -v
else
PX4_MAKE_ARGS := -j $(j)
PX4_MAKE_ARGS :=
endif
# Only override ninja default if -j is set.
ifneq ($(j),)
PX4_MAKE_ARGS := $(PX4_MAKE_ARGS) -j$(j)
endif
else
ifdef SYSTEMROOT
@ -103,6 +106,9 @@ else
else
PX4_CMAKE_GENERATOR := "Unix\ Makefiles"
endif
# For non-ninja builds we default to -j4
j := $(or $(j),4)
PX4_MAKE = $(MAKE)
PX4_MAKE_ARGS = -j$(j) --no-print-directory
endif