kernel.mk: fix MacOS building issue

As reported, nproc is a linux only command. Don't use it on MacOS.

diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index c593a55..b2684e3 100644 (file)
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -36,7 +36,7 @@ CROSS_COMPILE ?= $(abspath $(TARGET_TOOLS_PREFIX))
 endif
 endif
 KBUILD_OUTPUT := $(abspath $(TARGET_OUT_INTERMEDIATES)/kernel)
 endif
 endif
 KBUILD_OUTPUT := $(abspath $(TARGET_OUT_INTERMEDIATES)/kernel)

-mk_kernel := + $(hide) $(MAKE) -j$$(nproc) -l$$(($$(nproc)+2)) -C $(KERNEL_DIR) O=$(KBUILD_OUTPUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE="$(abspath $(CC_WRAPPER)) $(CROSS_COMPILE)" $(if $(SHOW_COMMANDS),V=1) $(KERNEL_CLANG_CLAGS)
+mk_kernel := + $(hide) $(MAKE) $(if $(filter darwin,$(HOST_OS)),,-j$$(nproc) -l$$(($$(nproc)+2))) -C $(KERNEL_DIR) O=$(KBUILD_OUTPUT) ARCH=$(TARGET_ARCH) CROSS_COMPILE="$(abspath $(CC_WRAPPER)) $(CROSS_COMPILE)" $(if $(SHOW_COMMANDS),V=1) $(KERNEL_CLANG_CLAGS)

 
 KERNEL_CONFIG_FILE := $(if $(wildcard $(TARGET_KERNEL_CONFIG)),$(TARGET_KERNEL_CONFIG),$(KERNEL_DIR)/$(KERNEL_CONFIG_DIR)/$(TARGET_KERNEL_CONFIG))
 
 
 KERNEL_CONFIG_FILE := $(if $(wildcard $(TARGET_KERNEL_CONFIG)),$(TARGET_KERNEL_CONFIG),$(KERNEL_DIR)/$(KERNEL_CONFIG_DIR)/$(TARGET_KERNEL_CONFIG))