[ECOS] Now I'm confused ...

Chuck McManis ecos@mcmanis.com
Tue Mar 30 06:28:00 GMT 2004


So here's the deal, I recently upgraded my FreeBSD box to 4.9 the "hard 
way" (clean re-install) to get to KDE 3.2. The only thing that I didn't 
manage to protect was my existing eCos install.

So basically I get to revisit all the stuff I did a year ago and forgot 
about :-)

I've built a new gcc toolchain out of 3.3 (FreeBSD uses 2.95 by default in 
the 4-STABLE branch). All that went as planned.

I uses anon-cvs to recover the ECOS packages (I had previously simply 
installed the 2.0 packages)

I didn't find source to ecosconfig (I know its there somewhere, but ..) so 
I re-used the one that I had built from 2.0.

To test the install I tried to rebuild my redboot image (target is 
i386-elf) so I did:
ecosconfig tree
and got:

ecos.ecc: error
     The savefile contains a cdl_option for an unknown option 
`CYGBLD_ISO_STDIO_FILEPOS'
Invalid savefile "ecos.ecc".
1 error occurred while reading in the savefile data.

Which wasn't particularly surprising given the amount of change since 2.0. 
So I tried to create a new redboot using:

ecosconfig new pc redboot
then edited ecos.ecc and changed the HAL_STARTUP option to FLOPPY
Tried to gmake and got this:

i386-elf-gcc -g -nostdlib -Wl,--gc-sections -Wl,-static 
-L/u1/cmcmanis/unix/tmp/ecos/usr/rb/install/lib -Ttarget.ld -o 
/u1/cmcmanis/unix/tmp/ecos/usr/rb/install/bin/gdb_module.img 
src/stubrom/gdb_module.o
/u1/cmcmanis/unix/tmp/ecos/usr/rb/install/lib/libtarget.a(redboot_main.o)(.text.cyg_start+0x0): 
In function `valid_address':
/u2/ecos-src/ecos/packages/redboot/current/src/main.c:743: multiple 
definition of `cyg_start'
src/stubrom/gdb_module.o(.text.cyg_start+0x0):/u2/ecos-src/ecos/packages/hal/common/current/src/stubrom/stubrom.c:57: 
first defined here
/usr/local/gnu/lib/gcc-lib/i386-elf/3.3.2/../../../../i386-elf/bin/ld: 
Warning: size of symbol `cyg_start' changed from 15 in 
src/stubrom/gdb_module.o to 896 in 
/u1/cmcmanis/unix/tmp/ecos/usr/rb/install/lib/libtarget.a(redboot_main.o)
collect2: ld returned 1 exit status
gmake[1]: *** 
[/u1/cmcmanis/unix/tmp/ecos/usr/rb/install/bin/gdb_module.img] Error 1
gmake[1]: Leaving directory 
`/u1/cmcmanis/unix/tmp/ecos/usr/rb/hal/common/current'
gmake: *** [build] Error 2

Multiple definition of cyg_start ? I'd expect this to be redboot's entry point.

What else do I need to change in the ecos.ecc to get a vanilla redboot ?

--Chuck


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