HaXml and ghc-6.0 (was Re: can't manage to compile ghc6)
Malcolm Wallace
Malcolm.Wallace@cs.york.ac.uk
Fri, 30 May 2003 16:34:38 +0100
Jan Scheffczyk <jan.scheffczyk@gmx.net> writes:
> I installed HaXml 1.08 newly under ghc 6 and get the following error when
> using ghci -package HaXml:
>
> GHCi runtime linker: fatal error: I found a duplicate definition for symbol
> TextziPrettyPrintziHughesPJ_zdzpzd_entry
> whilst processing object file
> /usr/local/lib/ghc-6.0/HSHaXml.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.
The cause is a simple configuration problem. HaXml checks for ghc
version >= 504 and deletes the extra copy of Text.PrettyPrint.HughesPJ.
Unfortunately, with the change in version numbering format, 60 <
504, so the test fails. You need to apply the following patch to
the HaXml configure script.
Regards,
Malcolm
Index: configure
===================================================================
RCS file: /home/cvs/root/HaXml/configure,v
retrieving revision 1.6
diff -u -r1.6 configure
--- configure 15 Apr 2003 20:16:44 -0000 1.6
+++ configure 30 May 2003 15:29:57 -0000
@@ -72,6 +72,9 @@
GHCKNOWN=`which ghc`
GHCVERSION=`${GHCKNOWN} --version 2>&1 | sed 's/^.*version[
]*\([0-9.]*\).*/\1/'`
GHCNUM=`echo $GHCVERSION | tr "v." " " | ( read x y z; echo $x$y; )`
+ if [ "$GHCNUM" -lt "100" ]
+ then GHCNUM=${GHCNUM}0
+ fi
fi
if [ "$GHCKNOWN" = "" ]
then echo "(not found)"
@@ -98,6 +101,9 @@
GHC2KNOWN=`which $BUILDWITH`
GHC2VERSION=`${GHC2KNOWN} --version 2>&1 | sed 's/^.*version[
]*\([0-9.]*\).*/\1/'`
GHC2NUM=`echo $GHC2VERSION | tr "." " " | ( read x y z; echo $x$y; )`
+ if [ "$GHC2NUM" -lt "100" ]
+ then GHC2NUM=${GHC2NUM}0
+ fi
fi
if [ "$GHC2KNOWN" = "" ]
then echo "(not found)"