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SubjectRe: Very old kernel.
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On 10/16/2001 03:39:06 AM MST Kirill Ratkin wrote:
>
>Hi. Do anybody know how to compile old kernel? (I need
>to compile 2.0.35 verion). I make config and make dep,
>when I do it I see error (during make dep). I found
>this problem as bus error in mkdep binary. I tried to
>take config scripts from 2.4.x kernel and it's ok but
>when I tried to compile I saw many error connected
>with asm statement and function type prefixes (like
>__constant_memcopy). I wouldn't like to install old
>gcc and old binutils. Are there ways to compile old
>kernel with new dev. tools?
>
>Regards,

I did the following change to mkdep.c of the 2.0.39 kernel
to compile it. It's some time ago, it was a problem
with mmap, iirc.

regards,
chris


--- mkdep.c.org Tue Oct 8 18:33:56 1996
+++ mkdep.c Wed Feb 7 15:24:36 2001
@@ -229,6 +229,8 @@
int pagesizem1 = getpagesize()-1;
int fd = open(filename, O_RDONLY);
struct stat st;
+// printf("pagesize: %d\n",pagesizem1);
+// exit (1);

if (fd < 0) {
perror("mkdep: open");
@@ -236,6 +238,7 @@
}
fstat(fd, &st);
mapsize = st.st_size + 2*sizeof(unsigned long);
+#if 0
mapsize = (mapsize+pagesizem1) & ~pagesizem1;
map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);
if (-1 == (long)map) {
@@ -243,9 +246,20 @@
close(fd);
return;
}
- close(fd);
state_machine(map);
munmap(map, mapsize);
+#else
+ map = malloc(mapsize);
+ if (! map) {
+ perror("mkdep: malloc");
+ close(fd);
+ return;
+ }
+ read (fd,map,st.st_size);
+ state_machine(map);
+ free(map);
+#endif
+ close(fd);
if (hasdep)
puts(command);
}
@@ -254,6 +268,7 @@
{
int len;
char * hpath;
+return(0);

hpath = getenv("HPATH");
if (!hpath)


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