| -----Original Message-----
| From: Josef Svenningsson [mailto:[EMAIL PROTECTED]]
| Sent: Monday, December 03, 2001 12:19 PM
| To: [EMAIL PROTECTED]
| Subject: Compiling GHC
|
|
| G'day!
|
| I just want to report on my little project of making ghc
| compile from cvs
| here at Chalmers. The problem is to make ghci work correctly,
| the compiler
| works just fine.
|
| As a step on the way I've had to add the following lines in
| ghc/rts/Linker.c in the definition of RTS_SYMBOLS:
|
| Sym(__ashldi3) \
| Sym(__lshrdi3) \
| Sym(__ashrdi3)
|
| So far so good. No more complaints about undefined symbols.
| But when I compiled ghc last time I got the following error message
| when trying to start ghci:
|
| GHCi runtime linker: fatal error: I found a duplicate definition for
| symbol
| gcc2_compiled.
| whilst processing object file
| /users/cs/josefs/ghchome/lib/ghc-5.03/HSstd_cbits.o
| This could be caused by:
| * Loading two different object files which export the same symbol
| * Specifying the same object file twice on the GHCi command line
| * An incorrect `package.conf' entry, causing some object to be
| loaded twice.
| GHCi cannot safely continue in this situation. Exiting now. Sorry.
|
|
| What to do?
|
| /Josef
|
| PS. gcc is 2.95.3 and I'm running on a sparc solaris
Wierd. We work with sparc-solaris-2.7 and gcc 2.95.3
and it all works.
gcc2_compiled is a bogus symbol inserted by gcc into all its
generated assembly, for no apparent reason.
Suggestion:
Look in rts/Linker.c in fn ocGetNames_ELF. Find a comment
"And the decision is ..." followed by "if (ad != NULL) ...".
Immediately before the if, add:
if (0 == strcmp(nm,"gcc2_compiled.")) ad = NULL;
which causes these symbols to be ignored.
See if that helps.
J
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