From: Matthias Schiffer Date: Wed, 15 Jun 2016 19:31:34 +0200 Subject: build: don't add -j for parallel builds with Make 4.2+ Make usually passes -j and jobserver arguments as part of MAKEFLAGS. LEDE removes MAKEFLAGS to have better control of the build, and re-adds the jobserver arguments with -j to the Make commandline where desired. Make 4.2+ behave differently with these arguments passed on the commandline than in MAKEFLAGS: -j will override the jobserver argument and the job count will be unlimited. Moving the flags to MAKEFLAGS will need many packages to be changed and tested; therefore, we opt for a less invasive change for now and just remove -j for Make 4.2+, as the jobserver argument alone is enough to enable parallel builds for these Make versions. Signed-off-by: Jo-Philipp Wich Signed-off-by: Matthias Schiffer Backport of LEDE 6fb212f2933bbbdf2935124205717c9d0ca72b32 diff --git a/include/host-build.mk b/include/host-build.mk index e2b5f2f..44401b8 100644 --- a/include/host-build.mk +++ b/include/host-build.mk @@ -10,7 +10,7 @@ HOST_INSTALL_DIR ?= $(HOST_BUILD_DIR)/host-install HOST_BUILD_PARALLEL ?= ifneq ($(CONFIG_PKG_BUILD_USE_JOBSERVER),) - HOST_MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) -j) + HOST_MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j)) else HOST_MAKE_J:=-j$(CONFIG_PKG_BUILD_JOBS) endif diff --git a/include/package.mk b/include/package.mk index c69d928..a99cdc6 100644 --- a/include/package.mk +++ b/include/package.mk @@ -23,7 +23,7 @@ PKG_RELRO_PARTIAL ?= 1 PKG_RELRO_FULL ?= 1 ifneq ($(CONFIG_PKG_BUILD_USE_JOBSERVER),) - MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) -j) + MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j)) else MAKE_J:=-j$(CONFIG_PKG_BUILD_JOBS) endif