Hi all,
I tried to send this mail to [email protected] some hours ago. It seems
that it was not delivered (it is not in the mailing list archive). I do not
know why. So, I try [email protected] now.
Could you help me to find the right place where to discuss this problem at
least? :-)
I am fixing OOo to build with the upcoming gcc-4.1. And I got many similar
build errors like this one:
--- cut ---
/usr/src/packages/BUILD/ooo-build-2.1.137/build/src680-m137/cppuhelper/source/access_control.cxx:65:
instantiated from here
/usr/src/packages/BUILD/ooo-build-2.1.137/build/src680-m137/solver/680/unxlngi6.pro/inc/com/sun/star/uno/Any.hxx:240:
error: no matching function for call to
'getCppuType(com::sun::star::uno::Reference<com::sun::star::security::XAccessContr
oller>*)'
../unxlngi6.pro/inc/com/sun/star/uno/Exception.hpp:62: note: candidates are:
const com::sun::star::uno::Type& getCppuType(const
com::sun::star::uno::Exception*)
../unxlngi6.pro/inc/com/sun/star/uno/RuntimeException.hpp:44: note:
const com::sun::star::uno::Type& getCppuType(const
com::sun::star::uno::RuntimeException*)
../unxlngi6.pro/inc/com/sun/star/uno/TypeClass.hdl:57: note:
const com::sun::star::uno::Type& getCppuType(const
com::sun::star::uno::TypeClass*)
/usr/src/packages/BUILD/ooo-build-2.1.137/build/src680-m137/solver/680/unxlngi6.
--- cut ---
The problem is the following. Any.hxx defines some inline operators and
methods that use the function getCppuType. The function getCppuType is
declared for many types in the .hdl include files and is defined in the
related .hpp include files. Most of the .hpp files includes Any.hxx.
Thereafter, Any.hxx is usually included when the first .hpp file is included.
It means that Any.hxx is included before the other .hpp/.hdl files are
included. It means that the methods and operators from Any.hxx are defined
before the related getCppuType functions are even declared.
It worked in the past but gcc-4.1 does not longer allow this situation. I
discussed it with our gcc developers and they said that the code was broken.
The function getCppuType must be declared before it is used at least.
The situation is quite complicated. I have already did some research and found
the following (I searched complete build tree compiled by an older compiler):
Any.hxx is included from files:
.hxx: 99
.hdl: 0
.hpp: 1183
.cxx: 229
total: 1511
.hdl files included from files:
.hxx: 26
.hdl: 6102
.hpp: 8100
.cxx: 127
total: 14355
.hpp files included from files:
.h: 35
.hxx: 3177
.hdl: 0
.hpp: 8224
.cc: 3
.cpp: 1395
.cxx: 3693
total: 16527
.hpp files included from these files in solver (this would point to a
cross-module and more complicated dependencies):
.h: 2
.hxx: 264
.hdl: 0
.hpp: 2181
.cxx: 1
total: 2448
One solution would be to remove #include Any.hxx from all .hpp files and
include it after all the .hpp files are included. It won't be easy, see the
numbers above. I have not found a better solution though yet.
One big problem would be if the methods or functions defined in Any.hxx are
used in a .hpp file. I hope that it does not happen.
I thought about other solutions but they seem to be unusable:
For example, I tried to declare all the getCppuType functions in Any.hxx. It
is ugly because this declaration conflits with the declaration in the
related .hdl file. It is a nasty hack in each case. In addition, there is a
problem that many other types and namespaces must be declared as well.
Another attempt was to include all .hdl files in Any.hxx. It is very ugly. It
means to include some hundreds of files. In addition, all the .hdl files are
not available every time, they are defined in more modules, ... Finally,
there are some conflicts in declarations. These conflicts do not appear if
the conflicting declaration is not included now. So, it would require some
more fixes to avoid such conflicts, ...
I has not found any other reasonable solution yet.
What do you think?
Is there a better solution?
Add me to CC because I am not on this list, please.
We could discuss it on irc if you prefere this way. I am often on the channel
#openoffice.org, nick pmladek.
Thanks in advance.
--
Best Regards,
Petr Mladek
software developer
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