如何编译linux 0.01？

Question

当我遇到重新编译 Linux 内核时，我对这个话题有点感兴趣。因此，为了更深入地观察输出，我从 github（https://github.com/liudonghua123/linux-0.01）下载了 linux 内核 0.01。当我运行时make（没有额外的参数）。我收到错误：-

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$ cd \'linux_kernel(0.01)-source_code\'\n$ make\ngcc -Wall -O -fstrength-reduce -fomit-frame-pointer -fno-stack-protector  \\\n-nostdinc -Iinclude -c -o init/main.o init/main.c\nIn file included from include/sys/stat.h:5,\n                 from include/unistd.h:53,\n                 from init/main.c:2:\ninclude/stdint.h:153: warning: "__INT64_C" redefined\n  153 | #  define __INT64_C(c) c ## LL\n      | \n<built-in>: note: this is the location of the previous definition\nIn file included from include/sys/stat.h:5,\n                 from include/unistd.h:53,\n                 from init/main.c:2:\ninclude/stdint.h:154: warning: "__UINT64_C" redefined\n  154 | #  define __UINT64_C(c) c ## ULL\n      | \n<built-in>: note: this is the location of the previous definition\nIn file included from init/main.c:3:\ninclude/time.h:39:8: warning: conflicting types for built-in function \xe2\x80\x98strftime\xe2\x80\x99; expected \xe2\x80\x98long unsigned int(char *, long unsigned int,  const char *, const void *)\xe2\x80\x99 [-Wbuiltin-declaration-mismatch]\n   39 | size_t strftime(char * s, size_t smax, const char * fmt, const struct tm * tp);\n      |        ^~~~~~~~\ninclude/time.h:1:1: note: \xe2\x80\x98strftime\xe2\x80\x99 is declared in header \xe2\x80\x98<time.h>\xe2\x80\x99\n  +++ |+#include <time.h>\n    1 | #ifndef _TIME_H\ninit/main.c: In function \xe2\x80\x98printf\xe2\x80\x99:\ninit/main.c:114:45: warning: passing argument 3 of \xe2\x80\x98vsprintf\xe2\x80\x99 from incompatible pointer type [-Wincompatible-pointer-types]\n  114 |  write(1,printbuf,i=vsprintf(printbuf, fmt, args));\n      |                                             ^~~~\n      |                                             |\n      |                                             va_list {aka char *}\ninit/main.c:38:12: note: expected \xe2\x80\x98__va_list_tag *\xe2\x80\x99 but argument is of type \xe2\x80\x98va_list\xe2\x80\x99 {aka \xe2\x80\x98char *\xe2\x80\x99}\n   38 | extern int vsprintf();\n      |            ^~~~~~~~\ninit/main.c: Assembler messages:\ninit/main.c:93: Error: invalid instruction suffix for `push\'\ninit/main.c:94: Error: invalid instruction suffix for `push\'\ninit/main.c:95: Error: invalid instruction suffix for `pushf\'\ninit/main.c:96: Error: invalid instruction suffix for `push\'\ninit/main.c:97: Error: invalid instruction suffix for `push\'\nmake: *** [Makefile:27: init/main.o] Error 1\n$\n

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（我已经从 shell 中复制了确切的单词）

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怎么修？

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Answer 1

0.01 内核不能为 64 位 x86 构建；在 x86 上，您应该以 32 位为目标。最重要的是，最近的链接器更改意味着代码无法链接\xe2\x80\x99；我们可以通过允许多个定义来解决这个问题。

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还有一些剩余的问题，可以通过编辑来修复，以便kernel/console.c导出：columnsattr

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static unsigned long lines=LINES;\nunsigned long columns=COLUMNS;\nstatic unsigned long state=0;\nstatic unsigned long npar,par[NPAR];\nstatic unsigned long ques=0;\nunsigned char attr=0x07;\n

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接着就，随即，

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make CC="gcc -m32" AS="as --32" LD="ld -melf_i386 --allow-multiple-definition" clean Image\n

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将成功完成（假设您有适当的 GCC 和 binutils，以及 Bruce Evans\xe2\x80\x99as86和ld86），至少使用 GCC 10。我还没有\xe2\x80\x99t 尝试引导生成的内核；I\xe2\x80\x99m 不确定 ELF 内核是否能正常工作。

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