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makefile: Support cross compile #7

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Merged
daeyeong-XCENA merged 1 commit into from
May 19, 2025
Merged

makefile: Support cross compile #7

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17 changes: 9 additions & 8 deletions Makefile
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Original file line number Diff line number Diff line change
@@ -1,20 +1,21 @@
PWD := $(shell pwd)
BUILDSYSTEM_DIR := /lib/modules/$(shell uname -r)/build
KERNEL_VERSION := $(shell uname -r | cut -d '.' -f 1,2)

BUILDSYSTEM_DIR ?= /lib/modules/$(shell uname -r)/build
CXL_DIR ?= cxl_6.10

INSTALL_MOD_PATH ?=
INSTALL_MOD_PATH_ARG := $(if $(strip $(INSTALL_MOD_PATH)),INSTALL_MOD_PATH="$(INSTALL_MOD_PATH)",)

ifneq ($(KERNELRELEASE),)
ifneq ($(DEBUG),)
EXTRA_CFLAGS += -DCONFIG_DEBUG_DMA
endif
obj-m += mx_dma.o
mx_dma-objs := init.o fops.o helper.o transfer.o queue_handler.o
obj-m += cxl_$(KERNEL_VERSION)/
obj-m += $(CXL_DIR)/
else
all:
@echo INSTALL_MOD_PATH=$(INSTALL_MOD_PATH)
$(MAKE) -C $(BUILDSYSTEM_DIR) M=$(PWD) modules
install: all
$(MAKE) -C $(BUILDSYSTEM_DIR) M=$(PWD) modules_install
depmod -a
$(MAKE) -C $(BUILDSYSTEM_DIR) M=$(PWD) modules_install $(INSTALL_MOD_PATH_ARG) DEPMOD=/bin/true

Copilot AI May 19, 2025

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Please add a comment explaining the override of DEPMOD to '/bin/true' to clarify its purpose in the cross compile context.

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clean:
$(MAKE) -C $(BUILDSYSTEM_DIR) M=$(PWD) clean
@/bin/rm -f *.ko modules.order *.mod.c *.o *.o.ur-safe .*.o.cmd
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8 changes: 4 additions & 4 deletions install.sh
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
#!/bin/bash
#

make clean
make install -j`nproc`
make install -j$(nproc)
depmod -a

kernel_version=$(uname -r)
mx_dma_path=$(find /lib/modules/${kernel_version}/ -type f -name "mx_dma.ko" 2>/dev/null)
Expand All @@ -16,5 +17,4 @@ fi

sed -i '/cxl_/d' /etc/modules
sed -i '/mx_dma/d' /etc/modules
find "$mx_dma_dir" -type f -name "*.ko" >> /etc/modules

find "$mx_dma_dir" -type f -name "*.ko" >>/etc/modules