From patchwork Tue Sep 25 10:17:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/1] allow to pass the number of parallel jobs via command line From: Jean-Christophe PLAGNIOL-VILLARD X-Patchwork-Id: 186829 Message-Id: <1348568223-13874-1-git-send-email-plagnioj@jcrosoft.com> To: buildroot@busybox.net Date: Tue, 25 Sep 2012 12:17:03 +0200 use PARALLEL_JOBS=x for this This will overwrite the value in BR2_JLEVEL Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- Makefile | 2 ++ package/Makefile.in | 2 ++ 2 files changed, 4 insertions(+) diff --git a/Makefile b/Makefile index 6536bca..13e8139 100644 --- a/Makefile +++ b/Makefile @@ -730,6 +730,8 @@ endif @echo ' make V=0|1 - 0 => quiet build (default), 1 => verbose build' @echo ' make O=dir - Locate all output files in "dir", including .config' @echo + @echo ' make PARALLEL_JOBS=x - X => number of jobs for each package this overwrite the KConfig BR2_JLEVEL' + @echo @$(foreach b, $(sort $(notdir $(wildcard $(TOPDIR)/configs/*_defconfig))), \ printf " %-35s - Build for %s\\n" $(b) $(b:_defconfig=);) @echo diff --git a/package/Makefile.in b/package/Makefile.in index 64508b2..fcf5b13 100644 --- a/package/Makefile.in +++ b/package/Makefile.in @@ -9,12 +9,14 @@ HOSTMAKE :=$(shell which $(HOSTMAKE) || type -p $(HOSTMAKE) || echo make) # If BR2_LEVEL is 0, scale the maximum concurrency with the number of # CPUs. A coefficient of 2 is used in order to keep processors busy # while waiting on I/O. +ifeq ($(PARALLEL_JOBS),) ifeq ($(BR2_JLEVEL),0) PARALLEL_JOBS:=$(shell echo \ $$((2 * `getconf _NPROCESSORS_ONLN 2>/dev/null || echo 1`))) else PARALLEL_JOBS:=$(BR2_JLEVEL) endif +endif MAKE1:=$(HOSTMAKE) -j1 MAKE:=$(HOSTMAKE) -j$(PARALLEL_JOBS)