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This is just a brief summary. The detailed information can be found in the gcc sources: gcc/fixinc/README.
There is no need to comprehend immensly complex shell scripting. There is a little bit of effort required to "define a new fix", but the syntax and examples are fairly simple and straight forward. Here is a very simple example that changes a reserved word used as a prototype argument into a non-reserved word. For the real details, see the README:
/*
* class in Xm/BaseClassI.h
*/
fix = {
hackname = x11_class_usage;
files = Xm/BaseClassI.h;
bypass = "__cplusplus"; /* skip fix if C++ aware */
select = " class\\)"; /* apply fix if found */
c_fix = format;
c_fix_arg = " c_class)";
test_text = "extern mumble (int class);\n";
};
This "include hack" will replace every occurrance of " class)"
in the file ``/usr/include/Xm/BaseClassI.h'' with
" c_class)", thus converting the test_text
to:
extern mumble (int c_class);
The "select" expression is
a regex regular expression.
