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Can anyone explain,how gcc works. I am totally confused. Thanks....
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- 12-01-2012 #1
- Join Date
- Apr 2009
Fork in GCC
Can anyone explain,how gcc works. I am totally confused.
- 12-02-2012 #2
I'm not sure precisely what your problem is, but gcc basically does a triple pass over your code.
The first pass is carried out by a preprocessor which does global edits: comments are removed, header files inserted, named constants replaced by their values, etc.
The second pass, carried out by gcc itself, is the compilation proper: your code is replaced by object (machine) code.
The third pass is the linking, carried out by a program called ld: the object code modules are linked to each other (if there is more than one) and to the C library and any other libraries that you have invoked.
Result: One executable file, ready to run."I'm just a little old lady; don't try to dazzle me with jargon!"