ARM VERSION 1.2 Datasheet download pdf (Page 108)

Creating an Application

3.5 Using your own libraries

The ARM librarian, armar, enables sets of ELF object files to be collected together and

maintained in libraries. Such a library can then be passed to armlink in place of several

object files. However, linking with an object library file does not necessarily produce

the same results as linking with all the object files collected into the object library file.

This is because armlink processes the input list and libraries differently:

• each object file in the input list appears in the output unconditionally, although

unused areas are eliminated if the armlink

-remove

option is specified

• a member of a library file is included in the output only if it is referred to by an

object file or a previously processed library file.

To create a new library called

my_lib

and add all the object files in the current directory,

type:

armar -create my_lib *.o

To delete all objects from the library that have a name starting with

sys_

, type:

armar -d my_lib sys_*

To replace, or add, three objects in the library with the version located in the current

directory, type:

armar -r my_lib obj1.o obj2.o obj3.o

For more information on armar, see the ADS Linker and Utilities Guide.

Note

The ARM libraries should not be modified. If you want to create a new implementation

of a library function, place the new function in an object file or your own library. Include

your object or library when you link the application. Your version of the function will

be used instead of the standard library version.

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ARM VERSION 1.2 Datasheet Page 108