Jeffrey Walton <noloader@xxxxxxxxx> writes: > I'm working on a project which uses automake and friends. 'make check' > builds the test files and executes the test programs. > > I'd like to write some tests targeted at the private functions. From > nm(1), I know the symbols of interest are present in the text section, > but they are local. > > Adding a configure switch might fly, but I don't know automake well. > Changing the source files ((ie, static -> non-static)) will probably > be denied. > > Other binutils tools, such as objdump and readelf looked like a dead end. > > Is there a way change visibility? You can use objcopy to turn an externally visible symbol into a local symbol, but as far as I know there is no way to turn a local symbol into an externally visible symbol. It would probably be possible to modify objcopy to add such an option. Note that in certain cases it would not work correctly; for example, gcc will sometimes use a different calling convention when calling a local symbol, and thus making it globally visible will give you a function which can not be called correctly from outside the file. Ian
