Difference between revisions of "Gentoo embedded"

Revision as of 16:41, 6 September 2008

In order to get Embedded support somethings obviously need to be compiled. Now this is not yet going smoothly but I'll give some indication what can be done to fix it and where I am strugling.

I am able to compile uclibc-0.29 with gcc-4.3.1, but out of the box glibc or uclibc is not possible. I'll try to get the ebuild of uclibc-0.29 and see if I can make some changes to it so it will leave us a successful uclibc. (That will still lack pthreads...)

Also the 'native' cris memcpy.c is broken :(

Output first tests

[1]

crisv32-axis-linux-uclibc-gcc --static -o /tmp/test2 /tmp/test2.c /mnt/dv/elphel/uClibc/lib/libpthread.a

[root@Elphel353 /mnt/flash/root/test]1157# ./test2 
Hello World from 0!
Hello World from 1!
Hello World from 2!
Hello World from 3!
Hello World from 4!

uclibc patch

--- libc/sysdeps/linux/cris/crti.S.orig 2008-09-06 23:51:14.017004350 +0200
+++ libc/sysdeps/linux/cris/crti.S      2008-09-06 23:54:28.477004350 +0200
@@ -10,8 +10,7 @@
        move    $srp,$r1
        subq    4,$sp
        move.d  $r0,[$sp]
-       move.d  $pc,$r0
-       sub.d   .:GOTOFF,$r0
+       lapc _GLOBAL_OFFSET_TABLE_,$r0
        .align  1
 
        .section        .fini
@@ -24,6 +23,5 @@
        move    $srp,$r1
        subq    4,$sp
        move.d  $r0,[$sp]
-       move.d  $pc,$r0
-       sub.d   .:GOTOFF,$r0
+       lapc _GLOBAL_OFFSET_TABLE_,$r0
       .align  1