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GCC Spec Strings |
gcc
is a driver program. It performs its job by invoking a
sequence of other programs to do the work of compiling, assembling and
linking. GCC interprets its command-line parameters and uses these to
deduce which programs it should invoke, and which command-line options
it ought to place on their command lines. This behavior is controlled
by spec strings. In most cases there is one spec string for each
program that GCC can invoke, but a few programs have multiple spec
strings to control their behavior. The spec strings built into GCC can
be overridden by using the '-specs=' command-line switch to specify
a spec file.
Spec files are plaintext files that are used to construct spec
strings. They consist of a sequence of directives separated by blank
lines.
Since gcc
only performs a small part of the tasks in TIGCC, spec
strings are more or less irrelevant. For details on specs, see the
original documentation on the net.