Linkage Kit Manual V6-00 - Fujitsu

CHAPTER 9 SPECIFICATIONS OF A LIBRARIAN
9.6 Checking and Displaying the Contents of a Library File
The following two items are checked.
• Whether an unsolved external reference symbol exists in a library
• Whether a module with debugging information exists
Additionally, this function provides you with information such as the date and time of
creating and updating a library file and registering a module and the names of external
definition symbols defined in each module.
■ Checking the Contents of a Library File
The following two items may be checked.
● Whether an unsolved external reference symbol exists in a library
A linker, when a module taken in from a library contains an external reference symbol, first searches for a
defined symbol in the same library file.
Therefore, it is recommended that whenever an external reference symbol exists in a module in a library
file, the module containing the concerned external definition symbol should be registered in the same
library file.
The program checks the correspondence between external reference and defined symbols in a library file.
If any undefined reference symbols remain, it outputs a diagnostic message.
● Whether a module with debugging information exists
If an object module with debugging information is contained, a diagnostic message is output.
If a module to be registered with the -g option specification in a library file contains debugging information in
the object module, it is registered in the library with the debugging information unremoved.
The above function is provided so that a module registered in a library may be debugged. However, after
the operation check, the debugging information will no longer be required.
■ Displaying the Contents of a Library File
The module and external definition symbol information of a library file is edited and output to a list file or
the standard output.
The list provides information such as: the date and time a library file was created and updated, when a
module was registered, and the name of an external definition symbol defined in each module.
For the contents of display, see "CHAPTER 11 LIST FORMATS OF A LIBRARIAN".
212 PART III LIBRARIAN