Library Linking : undefined symbols?

AmirthaRaj

Hi,

Our project contains many projects with a RTSC main application project producing .out file as output. The other projects produce .lib files in elf format.

a) RTSC main application project producing .out file

b) Other sub-projects producing .lib files(elf format)

The functions or methods in these projects are well accessible from the RTSC main project.

But when we needed a third party library that needs to be called from one of our sub-projects (b), it is not accessible from our sub-project. When building the main RTSC project ,it is giving errors as, there are undefined symbols called from our sub-project & lists out the symbols which are not accessible. These undefined symbols are in Third party Library. The third party library is given as elf format.

Why it is not accessible???

Thanks & Regards

K.AmirthaRaj

over 13 years ago

0 AartiG over 13 years ago

TI__Guru**** 173310 points

It could have to do with the order in which the libraries appear on the final link step. Are you using the --reread_libs linker option in the RTSC project? More information on object libraries and how references are resolved is explained in Section 7.6 of ARM Assembly Langiage Tools Users Guide (assuming you are using ARM).

If this is not the issue, then we would need more details. We can start with the output of the CCS build console. Please send us the output and any other relevant details that would help understand the issue.

0 AmirthaRaj over 13 years ago in reply to AartiG

Expert 1030 points

Hi,

sorry, the third party library is in coff format. It is essential to have elf format to link?

Thanks & Regards

K.AmirthaRaj

0 AartiG over 13 years ago in reply to AmirthaRaj

TI__Guru**** 173310 points

All object files and libraries being linked together should be of the same format (ie, of the same ABI).

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Library Linking : undefined symbols?