From help-request at octave dot org Fri Feb 18 16:24:55 2005
Subject: g++-4 vs. gperf (was: FYI: compiling octave with gcc4 (no go))
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: "Dmitri A. Sergatskov" <dmitri at unm dot edu>
Cc: octave help mailing list <help at octave dot org>
Date: Fri, 18 Feb 2005 17:30:15 -0500

On 18-Feb-2005, Dmitri A. Sergatskov <dmitri at unm dot edu> wrote:

| I also got the following problem which I cannot solve:
|=20
| g++4 -c  -fPIC -I. -I.. -I../liboctave -I../src -I../libcruft/misc  -=
I../glob -I ../glob -DHAVE=5FCONFIG=5FH -mieee-fp -Wall -W -Wshadow -O2=
 -mcpu=3Dathlon-mp -mtune=3Da thlon-mp=20
| -pipe lex.cc -o pic/lex.o
| octave.gperf: In function =91const octave=5Fkw* octave=5Fkw=5Flookup(=
const char*, unsign ed int)=92:
| octave.gperf:99: error: =91<anonymous enum>=92 is/uses anonymous type=

| octave.gperf:99: error:   trying to instantiate =91template<class T> =
template<clas s U> octave=5Fint::octave=5Fint(U)=92
| ...
| =09and later on
| octave.gperf:103: error: =91<anonymous enum>=92 is/uses anonymous typ=
e
| octave.gperf:103: error:   trying to instantiate =91template<class T>=
 template<cla ss U> octave=5Fint::octave=5Fint(U)=92
| lex.l: In member function =91bool bracket=5Fbrace=5Fparen=5Fnesting=5F=
level::is=5Fbracket()=92 :
| lex.l:196: error: =91bracket=5Fbrace=5Fparen=5Fnesting=5Flevel::<anon=
ymous enum>=92 is/uses anonymous type
| lex.l:196: error:   trying to instantiate =91template<class T> templa=
te<class U> o ctave=5Fint::octave=5Fint(U)=92
| lex.l:196: error: =91bracket=5Fbrace=5Fparen=5Fnesting=5Flevel::<anon=
ymous enum>=92 is/uses anonymous type
|=20
| ...
|=20
| This is not a crucial problem for me (I have a working octave, compil=
ed with gcc3.4.3),
| but perhaps of some interest to others...

This code is generated by gperf.  I think you can avoid the problem
with the following patch.  I see no reason to prefer enum values over
defined constants here, so we might as well use this set of options
for gperf.

Thanks,

jwe


src/ChangeLog:

2005-02-18  John W. Eaton  <jwe at octave dot org>

=09* Makefile.in (oct-gperf.h): Remove -E from list of gperf options.


Index: src/Makefile.in
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
RCS file: /usr/local/cvsroot/octave/src/Makefile.in,v
retrieving revision 1.358
diff -u -r1.358 Makefile.in
--- src/Makefile.in=0912 Feb 2005 02:29:34 -0000=091.358
+++ src/Makefile.in=0918 Feb 2005 22:21:55 -0000
 at @ -531,7 +531,7 @@
=20
 oct-gperf.h: octave.gperf
 =09 at echo "making $@ from $<"
-=09 at $(GPERF) -t -C -D -E -G -L C++ -Z octave=5Fkw=5Fhash \
+=09 at $(GPERF) -t -C -D -G -L C++ -Z octave=5Fkw=5Fhash \
 =09  $< | $(SED) 's,lookup\[,gperf=5Flookup[,' > $ at -t
 =09 at $(top=5Fsrcdir)/move-if-change $@-t $@
=20





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