Template Instantiation
David Greene
greened@eecs.umich.edu
Sun Feb 8 11:38:00 GMT 1998
First off, great job with egcs! This project is a BIG help!
Now on to the question:
Can someone clarify exactly how template instantiation
works in egcs? I'm using x86/Linux/ELF and SPARC/Solaris
systems.
I've been using -frepo when linking object files. When creating
liraries, I've been manually instantiating templates though IIRC,
someone mentioned that this wasn't necessary.
In the (very outdated) g++ FAQ at www.cygnus.com, I
found this passage:
Jason Merrill writes: "To perform closure on a set of objects, just try
to link them together. It will fail, but as a side effect all needed
instances will be generated in the objects."
Maybe I'm dense, but I don't understand this. If I link object
files using -frepo, recompilation takes place and there is no
failure. If I link using libraries, it fails, but nothing gets
generated.
I also seem to recall someone indicating that -frepo wasn't
necessary under ELF. Is this true? It would certainly reduce
build times. What do I do to get everything to link correctly?
Thanks much for the help!
-Dave
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