Re: MinGW compilation error with recent tip

[Michael Goffioul]

On Thu, Nov 17, 2011 at 10:02 AM, Kai Habel <address@hidden> wrote:
> Hello all,
>
> I am trying to compile a recent tip using MinGW (32bit). I am getting the
> following error:
>
> mv -f .deps/liboctinterp_la-symtab.Tpo .deps/liboctinterp_la-symtab.Plo
> /bin/sh ../libtool  --tag=CXX   --mode=compile g++ -DHAVE_CONFIG_H -I. -I..
>  -I/
> usr/local/octmgw32/include -I../libgnu -I../libgnu -I../libcruft/misc
> -I../liboc
> tave -I../liboctave -I. -I. -I/usr/local/octmgw32/include -g -O2
>  -DHAVE_CONFIG_
> H -mieee-fp -I/c/MinGW/include -I/usr/local/octmgw32/include/freetype2
> -I/usr/lo
> cal/octmgw32/include -IC:/MinGW/msys/1.0/local/octmgw32/include   -Wall -W
> -Wsha
> dow -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings -Wcast-align
> -Wcas
> t-qual -g -O2  -g -O2 -MT liboctinterp_la-token.lo -MD -MP -MF
> .deps/liboctinter
> p_la-token.Tpo -c -o liboctinterp_la-token.lo `test -f 'token.cc' || echo
> './'`t
> oken.cc
> libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I..
> -I/usr/local/octmgw32/include -I
> ../libgnu -I../libgnu -I../libcruft/misc -I../liboctave -I../liboctave -I.
> -I. -
> I/usr/local/octmgw32/include -g -O2 -DHAVE_CONFIG_H -mieee-fp
> -I/c/MinGW/include
>  -I/usr/local/octmgw32/include/freetype2 -I/usr/local/octmgw32/include
> -IC:/MinG
> W/msys/1.0/local/octmgw32/include -Wall -W -Wshadow -Wold-style-cast
> -Wformat -W
> pointer-arith -Wwrite-strings -Wcast-align -Wcast-qual -g -O2 -g -O2 -MT
> libocti
> nterp_la-token.lo -MD -MP -MF .deps/liboctinterp_la-token.Tpo -c token.cc
>  -DDLL
> _EXPORT -DPIC -o .libs/liboctinterp_la-token.o
> sysdep.cc: In function 'void w32_set_octave_home()':^M
> sysdep.cc:114:12: error: 'TH32CS_SNAPMODULE32' was not declared in this
> scope^M
> sysdep.cc:116:12: warning: use of old-style cast^M
> sysdep.cc: In function 'bool same_file_internal(const std::string&, const
> std::s
> tring&)':^M
> sysdep.cc:213:17: warning: use of old-style cast^M
>
> I think it was introduced with this change:
> http://hg.savannah.gnu.org/hgweb/octave/diff/80b30e186b73/src/sysdep.cc
>
> I have tlhelp32.h in C:\MinGW\include but there is no definition of
> TH32CS_SNAPMODULE32, only TH32CS_SNAPMODULE is defined.
>
> If I remove the TH32CS_SNAPMODULE32 in line 113 the compilation proceeds.
>
> What is the right way to avoid this error?

As described here:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms682489(v=vs.85).aspx
that flag is part of the Win32 API, so it's a problem in MinGW
headers, you might want to report it to MinGW developers. Though in
this case, using TH32CS_SNAPMODULE instead should be equivalent, at
least on 32bits platform/process.

Michael.