# FXRuby 1.4 doesn't compile on Mandrake Linux

**URL:** <https://www.ruby-forum.com/t/fxruby-1-4-doesnt-compile-on-mandrake-linux/49077>\
**Category:** Ruby\
**Created:** [November 29, 2005, 3:36pm UTC](https://www.ruby-forum.com/t/fxruby-1-4-doesnt-compile-on-mandrake-linux/49077 "2005-11-29T15:36:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![guslist](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/9d8465/32.png) [@guslist](https://www.ruby-forum.com/u/guslist)\
**Post date:** [November 29, 2005, 3:36pm UTC](https://www.ruby-forum.com/t/fxruby-1-4-doesnt-compile-on-mandrake-linux/49077/1 "2005-11-29T15:36:58Z")

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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](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.

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<div class="post-metadata">

**Author:** ![guslist](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/9d8465/32.png) [@guslist](https://www.ruby-forum.com/u/guslist)\
**Post date:** [November 29, 2005, 5:34pm UTC](https://www.ruby-forum.com/t/fxruby-1-4-doesnt-compile-on-mandrake-linux/49077/2 "2005-11-29T17:34:23Z")

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On 11/29/05, Guillaume M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I get the following error:  
> …  
> Any idea?

You need to first upgrade to a more recent version of FOX 1.4. The  
compile error you’re seeing is due to a bug in the FOX header files,  
and this bug was fixed in FOX 1.4.12 (way back in April). Please  
resist the urge to download FOX 1.6, since FXRuby 1.4 is not in fact  
compatible with FOX 1.6.