Re: error when compiling Octave in Cygwin

[Marco Atzeri]

--- Jaroslav Hajek  ha scritto:

> 
> Thanks for this test. This is really weird, because
> I think that the
> test program is exactly the delicate overload
> problem that occurs in
> oct-inttypes.h. However, you Makeconf seems to be OK
> (contains
> CXX=g++-4).
> 
> Meanwhile, I think I resolved the conformance
> question - for technical
> details, see the discussion on comp.lang.c++:
>
<http://groups.google.com/group/comp.lang.c++/browse_frm/thread/398e6ba0047f902a/bcb993f190dbbf65#bcb993f190dbbf65>.
> Unless anyone proves my reasoning wrong, the result
> is that the code
> is indeed standard-conforming.
> Can you again give the error output from make, this
> time with gcc 4?
> I'm very surprised that it didn't even change -
> that's suspicious. Can
> other people try building on Cygwin? If the problem
> persists, I think
> it's a bug in the cygwin gcc port.
> 

built on cygwin with 
configure --libexecdir=/usr/lib --enable-shared
CFLAGS="-Dtimezone=_timezone" CC=gcc-4  F77=gfortran-4
CXX=g++-4 CPP=cpp-4


make[2]: Entering directory
`/pub/hg/octave-build/liboctave'
g++-4 -c -I/usr/include/freetype2 -I.
-I../../octave/liboctave -I.. -I../liboctave -I../src
-I../libcr
uft/misc -I../../octave -I../../octave/liboctave
-I../../octave/src -I../../octave/libcruft/misc  -DHA
VE_CONFIG_H -mieee-fp -Wall -W -Wshadow
-Wold-style-cast -g -O2 -I/usr/include/freetype2
../../octave/
liboctave/oct-inttypes.cc -o oct-inttypes.o
Putting child 0x01ca70a0 (oct-inttypes.o) PID 412 on
the chain.
Live child 0x01ca70a0 (oct-inttypes.o) PID 412 
../../octave/liboctave/oct-inttypes.cc:511: error:
ambiguous template specialization 'mop<octave_int_c
mp_op::lt>' for 'bool octave_int_cmp_op::mop(double,
int64_t)'
../../octave/liboctave/oct-inttypes.cc:511: error:
ambiguous template specialization 'mop<octave_int_c
mp_op::lt>' for 'bool octave_int_cmp_op::mop(double,
uint64_t)'
../../octave/liboctave/oct-inttypes.cc:511: error:
ambiguous template specialization 'mop<octave_int_c
mp_op::lt>' for 'bool octave_int_cmp_op::mop(int64_t,
double)'
../../octave/liboctave/oct-inttypes.cc:511: error:
ambiguous template specialization 'mop<octave_int_c
mp_op::lt>' for 'bool octave_int_cmp_op::mop(uint64_t,
double)'

> In that case, I'd say file a bug for cygwin, and I
> will provide you a
> special cygwin patch, because in principle, I don't
> think it's good to
> change std-conforming code due to compiler bugs
> (unless they occur on
> majority of platforms).
> 

gcc-4 is still on test in cygwin, so a specific 
problem is possible.

> regards
> 
> -- 
> RNDr. Jaroslav Hajek
> computing expert
> Aeronautical Research and Test Institute (VZLU)
> Prague, Czech Republic
> url: www.highegg.matfyz.cz
> 

Regards
Marco