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When a program shares a set of Ada packages with other programs, it may happen that this program uses only a fraction of the subprograms defined in these packages. The code created for these unused subprograms increases the size of the executable.
gnatelim tracks unused subprograms in an Ada program and
outputs a list of GNAT-specific
Eliminate pragmas (see next
section) marking all the subprograms that are declared but never called.
By placing the list of
Eliminate pragmas in the GNAT configuration
file `gnat.adc' and recompiling your program, you may decrease the
size of its executable, because the compiler will not generate the code
for 'eliminated' subprograms.
gnatelim needs as its input data a set of tree files
(see 21.3 Tree Files) representing all the components of a program to
process and a bind file for a main subprogram (see
21.4 Preparing Tree and Bind Files for
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