Adding a library to a existing project

Daniel Gelinas

Hi Everyone,

I am trying to add a CMSIS DSP library to my CCS ( Version: 6.1.3.00033 ) project.

I am using the GNU compiler and linker. My first assumption was that the GCC precompiled library included in the CMSIS zip would work fine?

I added the file: libarm_cortexM4lf_math.a to my ${PROJECT_ROOT} directory. The project explorer recognizes the file as a library.
Then I added the path file into the properties: Build -> GNU Linker ->Libraries. The path is defined as: "${PROJECT_ROOT}/libarm_cortexM4lf_math.a"

When I built, it end-up with the following error message:

Description Resource Path Location Type
cannot find -lC:/Users/Dan/TI_Workspace7/CCS_Lesson/libarm_cortexM4lf_math.a CCS_Lesson C/C++ Problem

I tried different other options including building a new library from scratch but It always end-up with the same message whatever which library I add.

I think I am missing a very obvious step but I read a lot and I can not figured it out.

over 9 years ago

0 176-671 over 9 years ago

Expert 1240 points

Hi,

-I is used to specify paths to libraries, while -L is used to specify the libraries themselves. I suspect the tool is getting a bit confused, therefore I would add ${PROJECT_ROOT} to the option "Library search path" and "libarm_cortexM4lf_math.a" to the "Libraries" options.

--Cheers

0 AartiG over 9 years ago

TI__Guru**** 173310 points

For the GNU tools, you need to specify the library name without the lib prefix and the .a extension.

So for your specific library, add "arm_cortexM4lf_math" under the -l (--library) option and the path under the -L (--library-path) option.

0 Daniel Gelinas over 9 years ago in reply to AartiG

Prodigy 40 points

Thanks,
This is the rule I did not know. It will save me a lot of time.

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Adding a library to a existing project