ld Manual

Introduction to ld

ld Manual—529650.001

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pTAL Programs

Because pTAL does not support embedded HP NonStop SQL/MP or a language-

specific run-time library, there are no special requirements for linking pTAL programs.

Mixed-Language Programs

You can create mixed-language programs containing native C modules, native C++

modules, native COBOL modules, and pTAL modules. The MAIN procedure in a

mixed-language program can be written in C/C++ or COBOL but not pTAL. Mixed-

language programs that include C/C++ modules require you to link to the same run-

time initialization code and run-time libraries that C or C++ programs do (see C++

Programs). Mixed-language programs that include COBOL modules require you to link

to the same run-time libraries that COBOL programs do (see COBOL Programs.).

Programs With Embedded NonStop SQL/MP

Native C and native COBOL programs can contain embedded NonStop SQL/MP

statements. You can use ld to create a single loadfile from multiple C or COBOL

object files that contain embedded NonStop SQL/MP statements. After creating a

loadfile with ld, use the NonStop SQL/MP compiler, SQLCOMP, to set up an

executable NonStop SQL/MP application.

Always run ld before SQLCOMP. Do not run SQLCOMP on a linkfile and use the

resulting file as ld input.

A user library cannot contain embedded NonStop SQL/MP.

Linking User Libraries

You can use ld to link object files into a single executable user library.

You use the -o option to specify the name of the resulting object file, and the -ul

option to specify that the resulting object file is a user library.

For example, in the Guardian environment, this command links the object files file1

and file2 into an executable user library named lib:

ld file1 file2 -o lib -ul

This command is the OSS equivalent of the preceding command:

ld file1.o file2.o -o lib -ul

Note. You can link only linkfiles into a user library. You cannot link loadfiles, or a

combination of loadfiles and linkfiles, into a user library.