makefile：
ifeq ($(KERNELRELEASE),) KERNELDIR ?= /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/ PWD := $(shell pwd) modules: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules modules_install: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install clean: rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions .PHONY: modules modules_install clean else obj-m := channel_drv.o endif
错误如下：
make -C /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/ M=/home/sfe1012/GSRD/Qt/FpgaChannelDriver modules make[1]: Entering directory '/home/sfe1012/GSRD/linux-socfpga-socfpga-3.12' CC [M] /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.o In file included from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/bitops.h:16:0, from include/linux/bitops.h:22, from include/linux/kernel.h:10, from include/linux/cache.h:4, from include/linux/time.h:4, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/arch_hweight.h: In function ‘__arch_hweight64’: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/arch_hweight.h:53:42: error: expected ‘:’ or ‘)’ before ‘POPCNT64’ asm (ALTERNATIVE("call __sw_hweight64", POPCNT64, X86_FEATURE_POPCNT) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/alternative.h:98:31: note: in definition of macro ‘ALTINSTR_REPLACEMENT’ b_replacement(number)":\n\t" newinstr "\n" e_replacement(number) ":\n\t" ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/arch_hweight.h:53:7: note: in expansion of macro ‘ALTERNATIVE’ asm (ALTERNATIVE("call __sw_hweight64", POPCNT64, X86_FEATURE_POPCNT) ^ In file included from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/segment.h:148:0, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/ptrace.h:4, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/alternative.h:8, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/bitops.h:16, from include/linux/bitops.h:22, from include/linux/kernel.h:10, from include/linux/cache.h:4, from include/linux/time.h:4, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/processor.h: At top level: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/cache.h:7:25: error: ‘CONFIG_X86_L1_CACHE_SHIFT’ undeclared here (not in a function) #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/cache.h:8:30: note: in expansion of macro ‘L1_CACHE_SHIFT’ #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) ^ include/linux/cache.h:12:25: note: in expansion of macro ‘L1_CACHE_BYTES’ #define SMP_CACHE_BYTES L1_CACHE_BYTES ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/processor.h:131:30: note: in expansion of macro ‘SMP_CACHE_BYTES’ } __attribute__((__aligned__(SMP_CACHE_BYTES))); ^ In file included from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/thread_info.h:22:0, from include/linux/thread_info.h:54, from include/linux/preempt.h:9, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/processor.h:164:0: warning: "cache_line_size" redefined #define cache_line_size() (boot_cpu_data.x86_cache_alignment) ^ In file included from include/linux/time.h:4:0, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: include/linux/cache.h:64:0: note: this is the location of the previous definition #define cache_line_size() L1_CACHE_BYTES ^ In file included from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic.h:274:0, from include/linux/atomic.h:4, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/thread_info.h:23, from include/linux/thread_info.h:54, from include/linux/preempt.h:9, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:19:40: error: unknown type name ‘atomic64_t’ static inline long atomic64_read(const atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h: In function ‘atomic64_read’: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:21:32: error: request for member ‘counter’ in something not a structure or union return (*(volatile long *)&(v)->counter); ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h: At top level: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:31:33: error: unknown type name ‘atomic64_t’ static inline void atomic64_set(atomic64_t *v, long i) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:43:41: error: unknown type name ‘atomic64_t’ static inline void atomic64_add(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:57:41: error: unknown type name ‘atomic64_t’ static inline void atomic64_sub(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:73:49: error: unknown type name ‘atomic64_t’ static inline int atomic64_sub_and_test(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:89:33: error: unknown type name ‘atomic64_t’ static inline void atomic64_inc(atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:102:33: error: unknown type name ‘atomic64_t’ static inline void atomic64_dec(atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:117:41: error: unknown type name ‘atomic64_t’ static inline int atomic64_dec_and_test(atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:135:41: error: unknown type name ‘atomic64_t’ static inline int atomic64_inc_and_test(atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:154:49: error: unknown type name ‘atomic64_t’ static inline int atomic64_add_negative(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:171:48: error: unknown type name ‘atomic64_t’ static inline long atomic64_add_return(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:176:48: error: unknown type name ‘atomic64_t’ static inline long atomic64_sub_return(long i, atomic64_t *v) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:184:37: error: unknown type name ‘atomic64_t’ static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:189:34: error: unknown type name ‘atomic64_t’ static inline long atomic64_xchg(atomic64_t *v, long new) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:203:39: error: unknown type name ‘atomic64_t’ static inline int atomic64_add_unless(atomic64_t *v, long a, long u) ^ /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/atomic64_64.h:227:45: error: unknown type name ‘atomic64_t’ static inline long atomic64_dec_if_positive(atomic64_t *v) ^ In file included from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/segment.h:148:0, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/ptrace.h:4, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/alternative.h:8, from /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/bitops.h:16, from include/linux/bitops.h:22, from include/linux/kernel.h:10, from include/linux/cache.h:4, from include/linux/time.h:4, from include/linux/stat.h:18, from include/linux/module.h:10, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/cache.h:12:31: error: ‘CONFIG_X86_INTERNODE_CACHE_SHIFT’ undeclared here (not in a function) #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT ^ include/linux/cache.h:57:35: note: in expansion of macro ‘INTERNODE_CACHE_SHIFT’ __attribute__((__aligned__(1 << (INTERNODE_CACHE_SHIFT)))) ^ include/linux/mmzone.h:99:3: note: in expansion of macro ‘____cacheline_internodealigned_in_smp’ } ____cacheline_internodealigned_in_smp; ^ In file included from include/linux/elf.h:4:0, from include/linux/module.h:14, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/elf.h: In function ‘elf_common_init’: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/elf.h:172:3: error: ‘struct thread_struct’ has no member named ‘fs’ t->fs = t->gs = 0; ^ In file included from include/linux/module.h:22:0, from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/module.h: At top level: /home/sfe1012/GSRD/linux-socfpga-socfpga-3.12/arch/x86/include/asm/module.h:57:2: error: #error unknown processor family #error unknown processor family ^ In file included from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:16:0: include/linux/module.h:305:27: error: field ‘arch’ has incomplete type struct mod_arch_specific arch; ^ /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c: In function ‘request_io_irqs’: /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:239:35: warning: passing argument 2 of ‘request_irq’ from incompatible pointer type [-Wincompatible-pointer-types] if (request_irq(KEY_GPIO_IRQ, key_irq_irq_handler,IRQF_DISABLED, "channel_drv irq", NULL) ) /* 申请中断 */ ^ In file included from /home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.c:26:0: include/linux/interrupt.h:129:1: note: expected ‘irq_handler_t {aka enum irqreturn (*)(int, void *)}’ but argument is of type ‘irqreturn_t (*)(unsigned int, void *) {aka enum irqreturn (*)(unsigned int, void *)}’ request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags, ^ scripts/Makefile.build:314: recipe for target '/home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.o' failed make[2]: *** [/home/sfe1012/GSRD/Qt/FpgaChannelDriver/channel_drv.o] Error 1 Makefile:1229: recipe for target '_module_/home/sfe1012/GSRD/Qt/FpgaChannelDriver' failed make[1]: *** [_module_/home/sfe1012/GSRD/Qt/FpgaChannelDriver] Error 2 make[1]: Leaving directory '/home/sfe1012/GSRD/linux-socfpga-socfpga-3.12' Makefile:8: recipe for target 'modules' failed make: *** [modules] Error 2
解决办法：
将内核源代码中的根目录中的makefile
ARCH ?= $(SUBARCH) CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) # Architecture as present in compile.h UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH)
更改为 ARCH = arm CROSS_COMPILE = arm-linux-gnueabihf- （arm-gcc 目录） # Architecture as present in compile.h UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH)
