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- From: rr2b+@ANDREW.CMU.EDU (Robert Andrew Ryan)
- Newsgroups: comp.soft-sys.andrew
- Subject: Static linking ATK apps
- Message-ID: <kfIOrpK00WoiR8fEN=@andrew.cmu.edu>
- Date: 11 Jan 93 17:27:17 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Distribution: world
- Organization: The Internet
- Lines: 48
-
- Technical discussion and request for ideas follows, feel free to skip
- this message...
-
- We are currently working on a mechanism whereby a runapp can be
- automagically linked with a given set of classes statically loaded. (We
- are also woring on eliminating the assembly language trampoline code in
- the dynamic loading system, and providing dummy dynamic loading
- functions for machines without dynamic loading support.)
-
- The current scheme modifies the rules for making a .do file to install a
- list of the object files used, and a list of the libraries used, and a
- list of the classes references by the object files included in the .do.
- (Or which would be if a real .do was being generated.) A program has
- been written which uses this information to construct a list of the
- object files and libraries needed given a list of classes which are
- desired... For example supplying the list:
-
- eza
- xws
-
- to this program lists all the object files and libraries needed for the
- most basic runapp, and generates an appropriate statload.c. The
- difficulty at this point is that the libraries must be re-ordered by
- hand. (Since depending on what objects are pulled out of library A it
- might depend on library B, necessitating library B coming after library
- A on the link line.)
-
- Currently I am thinking of solving this by having a master list of
- libraries (and -L and -l switches) with an associated priority
- indicating where the argument should fall in the argument list. Any
- unknown libraries would be placed (in no particular order) before the
- known libraries. There are a few problems with this approach of course.
- First, if there are dependencies between user supplied libraries they
- must be added to the master list. Second, the dependencies between
- libraries may depend on which .o files get pulled out.
-
- The main goal all of this is striving to achieve is eliminating the need
- to get dynamic loading working for ATK to be useful on a new platform.
- So ideally the solution to ordering the libraries would be machine/OS
- independent.
-
- If you have any thoughts on the matter we would be happy to hear them.
- (Probably best just to reply to me, if there is general interest I'll
- summarize.)
-
- Thanks for any ideas,
- -Rob Ryan
- Andrew Consortium
-