Texas Instruments TMS320C54x, User Manual

Page: 233 / 469

Linker Command Files
7-21 Linker Description
7.5 Linker Command Files
Linker command files allow you to put linking information in a file; this is useful
when you invoke the linker often with the same information. Linker command
files are also useful because they allow you to use the MEMORY and
SECTIONS directives to customize your application. You must use these
directives in a command file; you cannot use them on the command line.
Linker command files are ASCII files that contain one or more of the following:
-
Input filenames, which specify object files, archive libraries, or other
command files. (If a command file calls another command file as input, this
statement must be the
last statement in the calling command file. The
linker does not return from called command files.)
-
Linker options, which can be used in the command file in the same manner
that they are used on the command line
-
The MEMORY and SECTIONS linker directives. The MEMORY directive
defines the target memory configuration. The SECTIONS directive
controls how sections are built and allocated.
-
Assignment statements, which define and assign values to global symbols
To invoke the linker with a command file, enter the lnk500 command and follow
it with the name of the command file:
lnk500
command_filename
The linker processes input files in the order that it encounters them. If the linker
recognizes a file as an object file, it links it. Otherwise, it assumes that a file
is a command file and begins reading and processing commands from it.
Command filenames are case sensitive, regardless of the system used.