Re: arm-elf-g++ linker error

[Hansen]

> "Hansen" <bluesboys@-remove-this-hotmail.com> wrote in message 
> news:d4o7pj$c4n$1@news.net.uni-c.dk...
>> Hi Group
>>
>> I've started up a C++ standard make project in Eclipse, where I would
>> like to make an applikation for the lpc2138.
>>
>> When trying to use C++ functions like <stdio.h> and printf() I get the
>> following message when linking:
>>
>> undefined reference to 'puts'
>>
>> I get the same kind of message when trying other functions as well, and 
>> also
>> when trying to declare a function as virtual. Also when using assert() 
>> which
>> are a C function.
>>
>> My linking command looks like this:
>>
>> -T $(LD_SCRIPT_RAM) -lstdc++
>> -Wl,-Map=".\bin\Ram\Blinky.map",-Ttext=0x40000000,-Tdata=0x40003000 \
>> --gc-sections -o .\RAM\Blinky.elf \
>> -nostartfiles -nodefaultlibs

>"Lionel B" <me@privacy.net> wrote in message 
>news:427094a2$0$79463$14726298@news.sunsite.dk...
>
> It sounds as if the linker is not picking up the standard library libc. Is 
> there a particular reason you are using
> he  -nostartfiles and -nodefaultlibs options? These tell the linker not to 
> use standard system startup files and
> standard system libraries respectively. Without -nodefaultlibs you 
> shouldn't have to specify -lstdc++ either - the
> linker should automatically pick up the standard libraries.  Maybe try 
> passing:
>
> -T $(LD_SCRIPT_RAM) \
> -Wl,-Map=".\bin\Ram\Blinky.map",-Ttext=0x40000000,-Tdata=0x40003000 \
> --gc-sections -o .\RAM\Blinky.elf
>
> Regards,
> -- 
> Lionel B

I have my own startup.s since this is needed for the lpc2138. Thats why I 
use the -nostartfiles.
But when removing the -nodefaultlibs I get the a line of undefined 
references from libc.a. Also since my memory on the lpc2138 is rather 
limited I don't want to bring unused code in my application.

I've tried using the following options:
 -T $(LD_SCRIPT_RAM) -lc -lnewlib.lpc
 -Wl,-Map=".\bin\Ram\Blinky.map",-Ttext=0x40000000,-Tdata=0x40003000 \
 --gc-sections -o .\RAM\Blinky.elf  -nostartfiles -nodefaultlibs

And it resultet in 3 undefined references to 'device table' in 
libnewlib-lpc.a

I'm rather new at this, so pleace have patience with me :o)
Regards
Søren Hansen