From: Guillaume Marcais <guslist@...>
Date: 2005-11-29T23:35:03+09:00
Subject: FXRuby 1.4 doesn't compile on Mandrake Linux

I get the following error:

$ sudo gem install fxruby
Attempting local installation of 'fxruby'
Local gem file not found: fxruby*.gem
Attempting remote installation of 'fxruby'
Updating Gem source index for: http://gems.rubyforge.org
Select which gem to install for your platform (i686-linux)
  1. fxruby 1.4.3 (mswin32)
  2. fxruby 1.4.3 (ruby)
[...snip...]
 > 2
Building native extensions.  This could take a while...
In file included from include/FXRuby.h:747,
                  from include/FXRbCommon.h:90,
                  from ui_wrap.cpp:581:
include/FXRbIconSourceVirtuals.h:15: error: invalid covariant return 
type for `v
irtual FX::FXImage* FXRbIconSource::loadImage(const void*, const 
FX::FXString&)
const'
/usr/include/fox-1.4/FXIconSource.h:109: error:   overriding `virtual 
FX::FXIcon
* FX::FXIconSource::loadImage(const void*, const FX::FXString&) const'
make: *** [ui_wrap.o] Error 1

gcc reads:

$ gcc -v
Reading specs from /usr/lib/gcc/i586-mandrake-linux-gnu/3.4.3/specs
Configured with: ../configure --prefix=/usr --libexecdir=/usr/lib 
--with-slibdir=/lib --mandir=/usr/share/man --infodir=/usr/share/info 
--enable-shared --enable-threads=posix --disable-checking 
--enable-long-long --enable-__cxa_atexit --enable-clocale=gnu 
--disable-libunwind-exceptions 
--enable-languages=c,c++,ada,f77,objc,java 
--host=i586-mandrake-linux-gnu --with-system-zlib
Thread model: posix
gcc version 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)

Any idea?

Guillaume.