文档建议反馈控制台
首页
学习
活动
专区
圈层
工具
MCP广场
文章/答案/技术大牛
发布
首页
学习
活动
专区
圈层
工具
MCP广场
返回腾讯云官网
社区首页 >问答首页 >没有规定目标“%.o”

问没有规定目标“%.o”
EN

Stack Overflow用户
提问于 2017-11-29 11:49:36
回答 1查看 5.3K关注 0票数 4

不知为什么，GNU没有为我做这件事。我有这个制作文件，我确保了每一个食谱，我使用标签，而不是空间。不管我怎么看，我只是找不到会导致错误信息的任何地方。

操作系统: Ubuntu 17.10 / GNU制作: 4.1 / GCC:交叉编译成i 686-精灵-gcc。

运行它时: make (在同一个目录中)给我

代码语言：javascript
运行
复制
make: *** No rule to make target '%.o', needed by 'kernel.elf'.  Stop.

我有一个bash脚本，它做了完全相同的事情，它的工作就像魅力。有人能说出我做错了什么吗？

Makefile：

代码语言：javascript
运行
复制
NASM=nasm
QEMU=qemu-system-i386
GCC=~/opt/cross/bin/i686-elf-gcc
CFLAGS=-std=c11 -ffreestanding -Wall -Wextra -Werror -masm=intel -g -O0
ASFLAGS=-felf32 -g

.PHONY: all clean
all:boot.iso

%.o : %.c
    $(GCC) -c $< $(CFLAGS) -o $@

%.so : %.asm
    $(NASM) $(ASFLAGS) -o $@ $<

kernel.elf : %.o
    $(GCC) -T link.ld -o $@ -ffreestanding -O0 -nostdlib -lgcc --verbose $^
    grub-file --is-x86-multiboot2 kernel.elf

boot.iso : kernel.elf grub.cfg
    mkdir -p ./iso/boot/grub
    cp kernel.elf ./iso/boot
    cp grub.cfg ./iso/boot/grub
    grub-mkrescue -o $@ ./iso

run: boot.iso
    $(QEMU) -cdrom $< -D log/qemu.log -d guest_errors -m 2048M -daemonize -serial file:log/boot.log

debug: boot.iso
    $(QEMU) -cdrom $< -D log/qemu.log -d guest_errors -m 2048M -daemonize -serial file:log/boot.log -s -S
    gdb ./kernel.elf -ex "target remote :1234" --tui

clean:
    rm -f ./*.o
    rm -f ./kernel.elf
    rm -rf ./iso

运行make选项将输出以下内容：

代码语言：javascript
运行
复制
GNU Make 4.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Reading makefiles...
Reading makefile 'Makefile'...
Updating makefiles....
 Considering target file 'Makefile'.
  Looking for an implicit rule for 'Makefile'.

  ... a bunch of ...
  Trying pattern rule with stem 'Makefile'.
  Trying implicit prerequisite 'Makefile.o'. <-- last line
  ... end a bunch of ...

  Looking for a rule with intermediate file 'Makefile.o'.
   Avoiding implicit rule recursion.

   ... a bunch of ...
   Trying pattern rule with stem 'Makefile'.
   Trying implicit prerequisite 'Makefile.c'. <--- last line
   ... end a bunch of ...

   Looking for a rule with intermediate file 'Makefile.c'.
    Avoiding implicit rule recursion.
    Avoiding implicit rule recursion.

    ... a bunch of ...
    Trying pattern rule with stem 'Makefile'.
    Trying implicit prerequisite 'Makefile.y'.
    ... end a bunch of ...

    Looking for a rule with intermediate file 'Makefile.y'.
     Avoiding implicit rule recursion.
     Avoiding implicit rule recursion.
     Avoiding implicit rule recursion.

     ... a bunch of ...
     Trying pattern rule with stem 'Makefile.y'.
     Trying implicit prerequisite 'SCCS/s.Makefile.y'. <-- last line
     ... end a bunch of ...
     ... I'm too tired to clean it up ....
     ... is all the same thing for Makefile

Updating goal targets....
Considering target file 'all'.
 File 'all' does not exist.
  Considering target file 'boot.iso'.
   File 'boot.iso' does not exist.
    Considering target file 'kernel.elf'.
     File 'kernel.elf' does not exist.
      Considering target file '%.o'.
       File '%.o' does not exist.
       Looking for an implicit rule for '%.o'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.c'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.cc'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.C'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.cpp'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.p'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.f'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.F'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.m'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.r'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.s'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.S'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.mod'.
       Trying pattern rule with stem '%.o'.
       Trying implicit prerequisite '%.o,v'.
       Trying pattern rule with stem '%.o'.
       Trying implicit prerequisite 'RCS/%.o,v'.
       Trying pattern rule with stem '%.o'.
       Trying implicit prerequisite 'RCS/%.o'.
       Trying pattern rule with stem '%.o'.
       Trying implicit prerequisite 's.%.o'.
       Trying pattern rule with stem '%.o'.
       Trying implicit prerequisite 'SCCS/s.%.o'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.c'.
       Looking for a rule with intermediate file '%.c'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.y'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.l'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.w'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.w'.
        Trying pattern rule with stem '%.c'.
        Trying implicit prerequisite '%.c,v'.
        Trying pattern rule with stem '%.c'.
        Trying implicit prerequisite 'RCS/%.c,v'.
        Trying pattern rule with stem '%.c'.
        Trying implicit prerequisite 'RCS/%.c'.
        Trying pattern rule with stem '%.c'.
        Trying implicit prerequisite 's.%.c'.
        Trying pattern rule with stem '%.c'.
        Trying implicit prerequisite 'SCCS/s.%.c'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.y'.
        Looking for a rule with intermediate file '%.y'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.y'.
         Trying implicit prerequisite '%.y,v'.
         Trying pattern rule with stem '%.y'.
         Trying implicit prerequisite 'RCS/%.y,v'.
         Trying pattern rule with stem '%.y'.
         Trying implicit prerequisite 'RCS/%.y'.
         Trying pattern rule with stem '%.y'.
         Trying implicit prerequisite 's.%.y'.
         Trying pattern rule with stem '%.y'.
         Trying implicit prerequisite 'SCCS/s.%.y'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.l'.
        Looking for a rule with intermediate file '%.l'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.l'.
         Trying implicit prerequisite '%.l,v'.
         Trying pattern rule with stem '%.l'.
         Trying implicit prerequisite 'RCS/%.l,v'.
         Trying pattern rule with stem '%.l'.
         Trying implicit prerequisite 'RCS/%.l'.
         Trying pattern rule with stem '%.l'.
         Trying implicit prerequisite 's.%.l'.
         Trying pattern rule with stem '%.l'.
         Trying implicit prerequisite 'SCCS/s.%.l'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.w'.
        Looking for a rule with intermediate file '%.w'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.w'.
         Trying implicit prerequisite '%.w,v'.
         Trying pattern rule with stem '%.w'.
         Trying implicit prerequisite 'RCS/%.w,v'.
         Trying pattern rule with stem '%.w'.
         Trying implicit prerequisite 'RCS/%.w'.
         Trying pattern rule with stem '%.w'.
         Trying implicit prerequisite 's.%.w'.
         Trying pattern rule with stem '%.w'.
         Trying implicit prerequisite 'SCCS/s.%.w'.
        Trying pattern rule with stem '%'.
        Rejecting impossible rule prerequisite '%.w'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.cc'.
       Looking for a rule with intermediate file '%.cc'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%.cc'.
        Trying implicit prerequisite '%.cc,v'.
        Trying pattern rule with stem '%.cc'.
        Trying implicit prerequisite 'RCS/%.cc,v'.
        Trying pattern rule with stem '%.cc'.
        Trying implicit prerequisite 'RCS/%.cc'.
        Trying pattern rule with stem '%.cc'.
        Trying implicit prerequisite 's.%.cc'.
        Trying pattern rule with stem '%.cc'.
        Trying implicit prerequisite 'SCCS/s.%.cc'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.C'.
       Looking for a rule with intermediate file '%.C'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%.C'.
        Trying implicit prerequisite '%.C,v'.
        Trying pattern rule with stem '%.C'.
        Trying implicit prerequisite 'RCS/%.C,v'.
        Trying pattern rule with stem '%.C'.
        Trying implicit prerequisite 'RCS/%.C'.
        Trying pattern rule with stem '%.C'.
        Trying implicit prerequisite 's.%.C'.
        Trying pattern rule with stem '%.C'.
        Trying implicit prerequisite 'SCCS/s.%.C'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.cpp'.
       Looking for a rule with intermediate file '%.cpp'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%.cpp'.
        Trying implicit prerequisite '%.cpp,v'.
        Trying pattern rule with stem '%.cpp'.
        Trying implicit prerequisite 'RCS/%.cpp,v'.
        Trying pattern rule with stem '%.cpp'.
        Trying implicit prerequisite 'RCS/%.cpp'.
        Trying pattern rule with stem '%.cpp'.
        Trying implicit prerequisite 's.%.cpp'.
        Trying pattern rule with stem '%.cpp'.
        Trying implicit prerequisite 'SCCS/s.%.cpp'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.p'.
       Looking for a rule with intermediate file '%.p'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.web'.
        Trying pattern rule with stem '%.p'.
        Trying implicit prerequisite '%.p,v'.
        Trying pattern rule with stem '%.p'.
        Trying implicit prerequisite 'RCS/%.p,v'.
        Trying pattern rule with stem '%.p'.
        Trying implicit prerequisite 'RCS/%.p'.
        Trying pattern rule with stem '%.p'.
        Trying implicit prerequisite 's.%.p'.
        Trying pattern rule with stem '%.p'.
        Trying implicit prerequisite 'SCCS/s.%.p'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.web'.
        Looking for a rule with intermediate file '%.web'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.web'.
         Trying implicit prerequisite '%.web,v'.
         Trying pattern rule with stem '%.web'.
         Trying implicit prerequisite 'RCS/%.web,v'.
         Trying pattern rule with stem '%.web'.
         Trying implicit prerequisite 'RCS/%.web'.
         Trying pattern rule with stem '%.web'.
         Trying implicit prerequisite 's.%.web'.
         Trying pattern rule with stem '%.web'.
         Trying implicit prerequisite 'SCCS/s.%.web'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.f'.
       Looking for a rule with intermediate file '%.f'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.F'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.r'.
        Trying pattern rule with stem '%.f'.
        Trying implicit prerequisite '%.f,v'.
        Trying pattern rule with stem '%.f'.
        Trying implicit prerequisite 'RCS/%.f,v'.
        Trying pattern rule with stem '%.f'.
        Trying implicit prerequisite 'RCS/%.f'.
        Trying pattern rule with stem '%.f'.
        Trying implicit prerequisite 's.%.f'.
        Trying pattern rule with stem '%.f'.
        Trying implicit prerequisite 'SCCS/s.%.f'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.F'.
        Looking for a rule with intermediate file '%.F'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.F'.
         Trying implicit prerequisite '%.F,v'.
         Trying pattern rule with stem '%.F'.
         Trying implicit prerequisite 'RCS/%.F,v'.
         Trying pattern rule with stem '%.F'.
         Trying implicit prerequisite 'RCS/%.F'.
         Trying pattern rule with stem '%.F'.
         Trying implicit prerequisite 's.%.F'.
         Trying pattern rule with stem '%.F'.
         Trying implicit prerequisite 'SCCS/s.%.F'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.r'.
        Looking for a rule with intermediate file '%.r'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%'.
         Rejecting impossible rule prerequisite '%.l'.
         Trying pattern rule with stem '%.r'.
         Trying implicit prerequisite '%.r,v'.
         Trying pattern rule with stem '%.r'.
         Trying implicit prerequisite 'RCS/%.r,v'.
         Trying pattern rule with stem '%.r'.
         Trying implicit prerequisite 'RCS/%.r'.
         Trying pattern rule with stem '%.r'.
         Trying implicit prerequisite 's.%.r'.
         Trying pattern rule with stem '%.r'.
         Trying implicit prerequisite 'SCCS/s.%.r'.
       Trying pattern rule with stem '%'.
       Rejecting impossible rule prerequisite '%.F'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.m'.
       Looking for a rule with intermediate file '%.m'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.ym'.
        Trying pattern rule with stem '%.m'.
        Trying implicit prerequisite '%.m,v'.
        Trying pattern rule with stem '%.m'.
        Trying implicit prerequisite 'RCS/%.m,v'.
        Trying pattern rule with stem '%.m'.
        Trying implicit prerequisite 'RCS/%.m'.
        Trying pattern rule with stem '%.m'.
        Trying implicit prerequisite 's.%.m'.
        Trying pattern rule with stem '%.m'.
        Trying implicit prerequisite 'SCCS/s.%.m'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.ym'.
        Looking for a rule with intermediate file '%.ym'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.ym'.
         Trying implicit prerequisite '%.ym,v'.
         Trying pattern rule with stem '%.ym'.
         Trying implicit prerequisite 'RCS/%.ym,v'.
         Trying pattern rule with stem '%.ym'.
         Trying implicit prerequisite 'RCS/%.ym'.
         Trying pattern rule with stem '%.ym'.
         Trying implicit prerequisite 's.%.ym'.
         Trying pattern rule with stem '%.ym'.
         Trying implicit prerequisite 'SCCS/s.%.ym'.
       Trying pattern rule with stem '%'.
       Rejecting impossible rule prerequisite '%.r'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.s'.
       Looking for a rule with intermediate file '%.s'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.S'.
        Trying pattern rule with stem '%.s'.
        Trying implicit prerequisite '%.s,v'.
        Trying pattern rule with stem '%.s'.
        Trying implicit prerequisite 'RCS/%.s,v'.
        Trying pattern rule with stem '%.s'.
        Trying implicit prerequisite 'RCS/%.s'.
        Trying pattern rule with stem '%.s'.
        Trying implicit prerequisite 's.%.s'.
        Trying pattern rule with stem '%.s'.
        Trying implicit prerequisite 'SCCS/s.%.s'.
        Trying pattern rule with stem '%'.
        Trying rule prerequisite '%.S'.
        Looking for a rule with intermediate file '%.S'.
         Avoiding implicit rule recursion.
         Avoiding implicit rule recursion.
         Trying pattern rule with stem '%.S'.
         Trying implicit prerequisite '%.S,v'.
         Trying pattern rule with stem '%.S'.
         Trying implicit prerequisite 'RCS/%.S,v'.
         Trying pattern rule with stem '%.S'.
         Trying implicit prerequisite 'RCS/%.S'.
         Trying pattern rule with stem '%.S'.
         Trying implicit prerequisite 's.%.S'.
         Trying pattern rule with stem '%.S'.
         Trying implicit prerequisite 'SCCS/s.%.S'.
       Trying pattern rule with stem '%'.
       Rejecting impossible rule prerequisite '%.S'.
       Trying pattern rule with stem '%'.
       Trying rule prerequisite '%.mod'.
       Looking for a rule with intermediate file '%.mod'.
        Avoiding implicit rule recursion.
        Trying pattern rule with stem '%.mod'.
        Trying implicit prerequisite '%.mod,v'.
        Trying pattern rule with stem '%.mod'.
        Trying implicit prerequisite 'RCS/%.mod,v'.
        Trying pattern rule with stem '%.mod'.
        Trying implicit prerequisite 'RCS/%.mod'.
        Trying pattern rule with stem '%.mod'.
        Trying implicit prerequisite 's.%.mod'.
        Trying pattern rule with stem '%.mod'.
        Trying implicit prerequisite 'SCCS/s.%.mod'.
       No implicit rule found for '%.o'.
       Finished prerequisites of target file '%.o'.
      Must remake target '%.o'.
make: *** No rule to make target '%.o', needed by 'kernel.elf'.  Stop.
c
linux
makefile
gnu-make
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2017-11-29 12:20:42

问题在于以下规则：

代码语言：javascript
运行
复制
kernel.elf : %.o

GNU实际上是将%.o作为一个先决条件，而不是一个模式。

我建议您定义一个包含对象文件名称的obj变量，并将规则重写为：

代码语言：javascript
运行
复制
kernel.elf: $(obj)

这样一个obj变量的定义可以是：

代码语言：javascript
运行
复制
obj := $(patsubst %.c,%.o,$(wildcard *.c))
obj += $(patsubst %.asm,%.so,$(wildcard *.asm))
票数 10
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/47552127

复制
相关文章

相似问题

领券

腾讯云开发者

扫码关注腾讯云开发者

扫码关注腾讯云开发者

领取腾讯云代金券

热门产品

热门推荐

更多推荐

Copyright © 2013 - 2025 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有 

深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 深公网安备号 44030502008569

腾讯云计算（北京）有限责任公司 京ICP证150476号 |  京ICP备11018762号 | 京公网安备号11010802020287

问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档