[gentoo-embedded] emerge ppp with crosscompile problem

[gentoo-embedded] emerge ppp with crosscompile problem

[Jakub Ladman]

Hi everyone.
I have this problem
By this script i am trying to emerge ppp ebuild:

trotl ladmanj # cat memerge
#!/bin/bash

ARCH=sh4
ACCEPT_KEYWORDS="-x86 -~x86 sh ~sh"
ROOT="/home/ladmanj/work_projects/sh4prj"
CFLAGS="-Os -pipe"
CXXFLAGS="${CFLAGS}"
LDFLAGS="-L${ROOT}/lib -L${ROOT}/usr/lib"
CBUILD=i686-pc-linux-gnu
CHOST=sh4-pc-linux-uclibc
CTARGET=sh4-pc-linux-uclibc
CC=sh4-pc-linux-uclibc-gcc
CXX=sh4-pc-linux-uclibc-g++
PKGDIR=/usr/portage/packages/sh4
USE="-* -X -kde -gnome -glibc uclibc make-symlinks static dhcp"

export ARCH ACCEPT_KEYWORDS CFLAGS CXXFLAGS LDFLAGS ROOT CBUILD CHOST CTARGET 
CC CXX PKGDIR USE

emerge -b $*
trotl ladmanj #  

this is the error i get

gcc -o dhcpc.so -shared dhcpc.o clientpacket.o packet.o socket.o options.o
/usr/lib/gcc/i686-pc-linux-gnu/3.4.5/../../../../i686-pc-linux-gnu/bin/ld: 
dhcpc.o: Relocations in generic ELF (EM: 42)
dhcpc.o: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make[2]: *** [dhcpc.so] Error 1

When i disable the dhcp use flag, it succesfuly installs everything. But i 
need dhcp support.

Thanks for your help
Best regards
Jakub Ladman
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Harald Schioeberg]

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Jakub Ladman wrote:
> Hi everyone.
> I have this problem
> By this script i am trying to emerge ppp ebuild:
> 
> trotl ladmanj # cat memerge
> #!/bin/bash
> 
> ARCH=sh4
> ACCEPT_KEYWORDS="-x86 -~x86 sh ~sh"
> ROOT="/home/ladmanj/work_projects/sh4prj"
> CFLAGS="-Os -pipe"
> CXXFLAGS="${CFLAGS}"
> LDFLAGS="-L${ROOT}/lib -L${ROOT}/usr/lib"
> CBUILD=i686-pc-linux-gnu
> CHOST=sh4-pc-linux-uclibc
> CTARGET=sh4-pc-linux-uclibc
> CC=sh4-pc-linux-uclibc-gcc
> CXX=sh4-pc-linux-uclibc-g++
> PKGDIR=/usr/portage/packages/sh4
> USE="-* -X -kde -gnome -glibc uclibc make-symlinks static dhcp"
> 
> export ARCH ACCEPT_KEYWORDS CFLAGS CXXFLAGS LDFLAGS ROOT CBUILD CHOST CTARGET 
> CC CXX PKGDIR USE
> 
> emerge -b $*
> trotl ladmanj #  
> 
> this is the error i get
> 
> gcc -o dhcpc.so -shared dhcpc.o clientpacket.o packet.o socket.o options.o
> /usr/lib/gcc/i686-pc-linux-gnu/3.4.5/../../../../i686-pc-linux-gnu/bin/ld: 
> dhcpc.o: Relocations in generic ELF (EM: 42)
> dhcpc.o: could not read symbols: File in wrong format
> collect2: ld returned 1 exit status
> make[2]: *** [dhcpc.so] Error 1

things that come up in my mind, perhaps worth trying:

1) it uses the i686-pc-linux-gnu/bin/ld, don't you need the
sh4-pc-linux-uclibc-ld ?
export LD="sh4-pc-linux-uclibc-ld"

2) try adding -fpic or -fPIC to your CFLAGS, relocation error sounds a
bit like that.

3) it uses the gcc to compile a .so
	3a) it should use the sh4-pc-linux-uclibc-gcc
	3b) it shouldn't build a .so at all with USE="-* static"
correct my if i'm wrong, but that sounds that either the dhcp ebuild is
completely broken (unlikely) or your variables don't end up in your emerge.

4) try adding an export ROOT="/path/to/sh4/system" variable, maybe it
gets confused when merging your sh4 binaries to / , maybe it tries to
link something to libs from /

just some wild guesses.
	Harald
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Jakub Ladman]

Thanks for answer.

>
> 1) it uses the i686-pc-linux-gnu/bin/ld, don't you need the
> sh4-pc-linux-uclibc-ld ?
> export LD="sh4-pc-linux-uclibc-ld"

I will try it, it seems to be one of my mistakes
>
> 2) try adding -fpic or -fPIC to your CFLAGS, relocation error sounds a
> bit like that.

I will try it, even i do not know what it is.

>
> 3) it uses the gcc to compile a .so
> 	3a) it should use the sh4-pc-linux-uclibc-gcc
> 	3b) it shouldn't build a .so at all with USE="-* static"

It must be bug in ebuild, cause to other ebuilds are using the correct 
compiler.
I will try to remove static use flag.

> correct my if i'm wrong, but that sounds that either the dhcp ebuild is
> completely broken (unlikely) or your variables don't end up in your emerge.
>
> 4) try adding an export ROOT="/path/to/sh4/system" variable, maybe it
> gets confused when merging your sh4 binaries to / , maybe it tries to
> link something to libs from /

That is allready set.

>
> just some wild guesses.
> 	Harald

Best regards
Jakub 
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Jakub Ladman]

Hi all
trotl ladmanj # ./memerge -va ppp

These are the packages that I would merge, in order:

Calculating dependencies ...done!
[ebuild   R   ] net-dialup/ppp-2.4.3-r14  
to /home/ladmanj/work_projects/sh4prj/ -activefilter -atm +dhcp -eap-tls -gtk 
-ipv6 -mppe-mppc -pam -radius 0 kB

make[2]: Entering directory 
`/var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/dhcp'
sh4-pc-linux-uclibc-gcc -I../.. -I../../../include -Os -pipe -fPIC -fPIC   -c 
-o dhcpc.o dhcpc.c
sh4-pc-linux-uclibc-gcc -I../.. -I../../../include -Os -pipe -fPIC -fPIC   -c 
-o clientpacket.o clientpacket.c
sh4-pc-linux-uclibc-gcc -I../.. -I../../../include -Os -pipe -fPIC -fPIC   -c 
-o packet.o packet.c
sh4-pc-linux-uclibc-gcc -I../.. -I../../../include -Os -pipe -fPIC -fPIC   -c 
-o socket.o socket.c
sh4-pc-linux-uclibc-gcc -I../.. -I../../../include -Os -pipe -fPIC -fPIC   -c 
-o options.o options.c
gcc -o dhcpc.so -shared dhcpc.o clientpacket.o packet.o socket.o options.o
/usr/lib/gcc/i686-pc-linux-gnu/3.4.5/../../../../i686-pc-linux-gnu/bin/ld: 
dhcpc.o: Relocations in generic ELF (EM: 42)
dhcpc.o: could not read symbols: File in wrong format
collect2: ld returned 1 exit status
make[2]: *** [dhcpc.so] Error 1
make[2]: Leaving directory 
`/var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/dhcp'


actual script is:
#!/bin/bash

ARCH=sh4
ACCEPT_KEYWORDS="-x86 -~x86 sh ~sh"
ROOT="/home/ladmanj/work_projects/sh4prj"
CFLAGS="-Os -pipe -fPIC"
CXXFLAGS="${CFLAGS}"
LDFLAGS="-L${ROOT}/lib -L${ROOT}/usr/lib"
LD="sh4-pc-linux-uclibc-ld"
CBUILD=i686-pc-linux-gnu
CHOST=sh4-pc-linux-uclibc
CTARGET=sh4-pc-linux-uclibc
CC=sh4-pc-linux-uclibc-gcc
CXX=sh4-pc-linux-uclibc-g++
PKGDIR=/usr/portage/packages/sh4
USE="-* -X -kde -gnome -glibc uclibc make-symlinks dhcp"

export ARCH ACCEPT_KEYWORDS CFLAGS CXXFLAGS LDFLAGS ROOT CBUILD CHOST CTARGET 
CC CXX PKGDIR USE

emerge -b $*
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Harald Schioeberg]

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i found your problem:
it is in
/var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/Makefile.linux

these are the first lines of this file:

CC      = gcc
COPTS   = -O2 -g
CFLAGS  = $(COPTS) -I.. -I../../include -fPIC
LDFLAGS = -shared
[...]

.... and it simply does not respect any environment variables.
Time to write a patch and file the bugreport against the ppp ebuild.

cheers
	Harald
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Jakub Ladman]

Dne st 3. května 2006 13:57 Harald Schioeberg napsal(a):
> i found your problem:
> it is in
> /var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/Makefile.linux
>
> these are the first lines of this file:
>
> CC      = gcc
> COPTS   = -O2 -g
> CFLAGS  = $(COPTS) -I.. -I../../include -fPIC
> LDFLAGS = -shared
> [...]
>
> .... and it simply does not respect any environment variables.
> Time to write a patch and file the bugreport against the ppp ebuild.

But i do not know how to do it :-( 
Jakub Ladman

>
> cheers
> 	Harald

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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Harald Schioeberg]

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Jakub Ladman wrote:
> Dne st 3. května 2006 13:57 Harald Schioeberg napsal(a):
>> i found your problem:
>> it is in
>> /var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/Makefile.linux
>>
>> these are the first lines of this file:
>>
>> CC      = gcc
>> COPTS   = -O2 -g
>> CFLAGS  = $(COPTS) -I.. -I../../include -fPIC
>> LDFLAGS = -shared
>> [...]
>>
>> .... and it simply does not respect any environment variables.
>> Time to write a patch and file the bugreport against the ppp ebuild.
> 
> But i do not know how to do it :-( 
> Jakub Ladman
> 
>> cheers
>> 	Harald
> 

A workaround until a new ppp ebuild is released might be (untested):

ln -s /usr/bin/sh4-..-gcc /usr/local/sh4-tools/gcc
PATH="/usr/local/sh4-tools:$PATH"
emerge ppp

i have filed a bug:

http://bugs.gentoo.org/show_bug.cgi?id=132115


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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[Harald Schioeberg]

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> 
> http://bugs.gentoo.org/show_bug.cgi?id=132115
> 

what i forgot: Jakub, can you please attach the output of emerge --info
and your the rest of your build setup to the bug.
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Re: [gentoo-embedded] emerge ppp with crosscompile problem

[wireless]

Harald Schioeberg wrote:
> i found your problem:
> it is in
> /var/tmp/portage/ppp-2.4.3-r14/work/ppp-2.4.3/pppd/plugins/Makefile.linux
> 
> these are the first lines of this file:
> 
> CC      = gcc
> COPTS   = -O2 -g

Maybe it would be useful to try 'small binaries'

COPTS  = -Os -g


> cheers
> 	Harald


James

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