[uClibc]cross compiling for mipsel-linux, part 2

[Mark and Janice Juszczec]

Hi folks

Still not having any luck.  Can anyone suggest the next the to try?

I thought I'd fool with the settings in .config and see if these fixed my 
problems.


I turned off "Support global constructors and destructors"
             "Large File Support"
             "Dynamic atexit() Support"
             "Shadow Password Support"

In Rules.mak I tried

CROSS=/opt/tvt/bin/mipsel-linux-, and when that didn't work

CROSS=mipsel-linux- (and set PATH=/opt/tvt/bin:$PATH)

Both gave me:

/opt/tvt/bin/mipsel-linux-gcc  -Wall -Wstrict-prototypes -Wno-trigraphs 
-fno-strict-aliasing -O0     -fno-builtin -nostdinc -D_LIBC 
-I../../../../include -I. -g 
-I/opt/tvt/lib/gcc-lib/mipsel-linux/2.95.2/include -DNDEBUG -fPIC -c 
xstatconv.c -o xstatconv.o

In file included from xstatconv.c:33:
xstatconv.h:29: warning: `struct stat64' declared inside parameter list
xstatconv.h:29: warning: its scope is only this definition or declaration, 
which is probably not what you want.

This went away when I re-enabled LFS support.  I don't want LFS support, my 
file system is nowhere near 2Gb.  But I'll deal with this later.

Then I got the same undeclared __NR_getdents64 error as in my last post.  I 
fixed it the same way, by uncommenting it in 
libc/sysdeps/linux/common/syscalls.c

Next I got:

Finding missing symbols in libc.a ...
    partial linking...
Symbol _fini needed by libc.a but not found in libgcc.a
Symbol _init needed by libc.a but not found in libgcc.a
Symbol fcntl64 needed by libc.a but not found in libgcc.a

same as yesterday.

The mailing list archives suggested enabling ctors/dtors.  I did it and the 
_fini, _init problem went away.

I found the fcntl64 definition it in libc/sysdeps/linux/common/syscalls.c
in an ifdef.  Its defined if __NR_fcntl64 is defined.  The __NR_fcntl64 was 
commented out, so I uncommented it.

And I got a clean compile!


Does any of this make sense for compiling under mipsel-linux?

I compiled BusyBox and when it tries to run init I get an "Invalid ELF 
header" error.

The mailing list suggested:

[markj at mjolnir busybox]$ mipsel-uclibc-ldd busybox
libc.so.0 => /home/markj/myboot/uclibc-dev/lib/libc.so.0
                                                    (0x00000000)
/lib/ld-uClibc.so.0 => /lib/ld-uClibc.so.0 (0x00000000)

[markj at mjolnir busybox]$ file busybox
busybox: ELF 32-bit LSB mips-1 executable, MIPS R3000_LE [bfd bug], version 
1 (SYSV), dynamically linked (uses shared libs), stripped

The (0x00000000) are troubling.  Do they indicate a problem?

I noticed .config said SYSTEM_LDSO="/lib/ld-linux.so.2". It wasn't created 
when I built uClibc.  I created it and ld-linux.so.1, because I figured they 
go together ;-) , as links  to ld-uClibc-0.9.17.so

It didn't do any good ;-(

Would stripping ld-uClibc-0.9.17.so and libuClibc-0.9.17.so cause any 
problems like this?

Then I tried removing  Compile native shared library loader from .config.

This didn't do any good either.

Packing it in for the evening

Mark

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