build: use lazy evaluation for NPROC to speed up metadata dump

Reduces package metadata dump time by ~10% Signed-off-by: Felix Fietkau <nbd@nbd.name>
3 months ago · dac8021297
parent 3963dab030
commit dac8021297
1 changed files with 1 additions and 1 deletions
--- a/rules.mk
+++ b/rules.mk
@ -96,7 +96,7 @@ TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
 BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
 SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
 BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
-NPROC:=$(shell sysctl -n hw.ncpu 2>/dev/null || nproc)
+NPROC=$(shell sysctl -n hw.ncpu 2>/dev/null || nproc)
 export SHELL:=/usr/bin/env bash

 IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)