topic Re: Link Error in ColdFire/68K Microcontrollers and Processors

Link Error

blakehodder — Tue, 29 Jan 2013 15:02:50 GMT

Please help.

When compiling debug it works fine. Once I compile the project for release I get the following link error:

Link Error : Undefined : "_io_sdcard_install"

Link failed

Any ideas why this would compile for debug and receive that error once compiling for release?

Thanks in advance.

Re: Link Error

JimDon — Tue, 29 Jan 2013 15:26:03 GMT

Since I don't have the project, I can only guess.

In release the optimizer is on, perhaps that function gets optimized away????

Re: Link Error

blakehodder — Tue, 29 Jan 2013 15:28:15 GMT

Thanks Jim,

Is there a way to tell if it gets optimized away?

Re: Link Error

JimDon — Tue, 29 Jan 2013 15:29:38 GMT

Look in the map file.

What is in the function?

Re: Link Error

blakehodder — Tue, 29 Jan 2013 15:39:13 GMT

SYS_system.c is what is calling it. it is declared in sdcard.h

Re: Link Error

JimDon — Tue, 29 Jan 2013 15:40:27 GMT

I really meant do you have the function body?

Re: Link Error

blakehodder — Tue, 29 Jan 2013 15:50:54 GMT

Sorry, I believe this is what you were asking for:

if(_io_sdcard_install("sdcard:",(pointer)&tSYS_system_sd_init,tSYS_system_spi_handle)==MQX_OK)

it appears to say that the entire _io_sdcard struct is undefined.

Thanks

Re: Link Error

JimDon — Tue, 29 Jan 2013 15:54:48 GMT

I think it's saying that the function _io_sdcard_install is not defined.

Do you know where _io_sdcard_install is defined?

Re: Link Error

blakehodder — Tue, 29 Jan 2013 16:04:43 GMT

It is defined in sdcard.h:

extern _mqx_int _io_sdcard_install(char_ptr,SDCARD_INIT_STRUCT_PTR,MQX_FILE_PTR);

Out of curriousity, it should be defined if it will compile for debug would it not?

Thanks

Re: Link Error

blakehodder — Tue, 29 Jan 2013 17:31:07 GMT

Here is the entire Errors:

Link Error : Undefined : "_io_sdcard_install"

Referenced from "SYS_system_fs_setup" in

Error : Undefined : "_io_sdcard_spi_init"

Referenced from "tSYS_system_sd_init" in

Error : Undefined : "_io_sdcard_spi_read_block"

Referenced from "tSYS_system_sd_init" in

Error : Undefined : "_io_sdcard_spi_write_block"

Referenced from "tSYS_system_sd_init" in

Link failed.

Re: Link Error

JimDon — Tue, 29 Jan 2013 17:34:32 GMT

Any chance in the debug build you are linking to a lib, but in release you are not?

Re: Link Error

blakehodder — Tue, 29 Jan 2013 17:47:14 GMT

Quite possibly,I just dug a little deeper and realized that when I compiled the MQX libraries I compiled the debug but no the release. Trying that right now.

Thanks

Re: Link Error

blakehodder — Tue, 29 Jan 2013 17:52:45 GMT

It was indeed not linking to the library. I recompiled the MQX libraries for release and it compiled no problem.

Thanks