Linux 内核编译，驱动编译 

 1 == 关于linux内核Build
 2 首先整一个 Makefile 例子
 3 
 4 ----------------------------------------------------------------------------------------
 5 ifeq ($(KERNELRELEASE),)
 6 
 7 KERNELDIR ?=/lib/modules/$(shell uname -r)/build
 8 PWD := $(shell pwd)
 9 
10 modules:
11     $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
12 
13 modules_install:
14     $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
15 
16 clean:
17     rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions modules* Module*
18 
19 .PHONY: modules modules_install clean
20 
21 else
22     obj-m += kprobe_.o
23     kprobe_-objs := kprobe.o
24 endif
25 -----------------------------------------------------------------------------------------
26 KERNELDIR 是内核构建build路径
27 PWD 是当前路径
28 
29 obj-m 是构建模块的
30 kprobe_.o 是模块的名字+.o
31 kprobe_-objs := kprobe.o
32 xxx-objs 是模块依赖的文件
33 KBUILD_EXTMOD:= modules path
34 
35 KCPPFLAGS：预处理传递的附加选项，预处理选项用在kbuild预处理包含编译C文件和汇编文件。
36 
37 KAFLAGS：汇编（内核和模块）的附加选项
38 
39 AFLAGS_MODULE：$(AS)的附加模块指定选项
40 
41 AFLAGS_KERNEL：$(AS)用汇编代码编译为内建的附加选项
42 
43 KCFLAGS：C编译的附加选项
44 
45 CFLAGS_KERNEL：$(CC)编译为内部的选项
46 
47 CFLAGS_MODULE：$(CC)的附加指定选项
gcc -Wp,-MD,net/bridge/netfilter/.nf_tables_bridge.o.d  -nostdinc -isystem /usr/lib/gcc/x86_64-linux-gnu/4.8/include 
-I./arch/x86/include -Iarch/x86/include/generated/uapi -Iarch/x86/include/generated  -Iinclude -I./arch/x86/include/uapi 
-Iarch/x86/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ 
-Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration 
-Wno-format-security -std=gnu89 -m64 -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mtune=generic 
-mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -DCONFIG_X86_X32_ABI -DCONFIG_AS_FXSAVEQ=1 
-DCONFIG_AS_SSSE3=1 -DCONFIG_AS_CRC32=1 -DCONFIG_AS_AVX=1 -DCONFIG_AS_AVX2=1 -pipe -Wno-sign-compare 
-fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -fno-delete-null-pointer-checks 
-O2 --param=allow-store-data-races=0 -Wframe-larger-than=1024 -fstack-protector -Wno-unused-but-set-variable 
-fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -gdwarf-4 -pg -mfentry -DCC_USING_FENTRY 
-Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes 
-DCC_HAVE_ASM_GOTO  -DMODULE  -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(nf_tables_bridge)"  -D"KBUILD_MODNAME=KBUILD_STR(nf_tables_bridge)" 
-c -o net/bridge/netfilter/.tmp_nf_tables_bridge.o net/bridge/netfilter/nf_tables_bridge.c

ld -r -m elf_x86_64 -T ./scripts/module-common.lds --build-id  -o drivers/hwmon/ibmaem.ko drivers/hwmon/ibmaem.o drivers/hwmon/ibmaem.mod.o

 

posted @ 2020-09-30 14:23  maojun1998  阅读(386)  评论(0)    收藏  举报