Announcing a new sub-project in gnucash: GUI in C++, Qt, CMake.
Herbert Thoma
herbert.thoma at iis.fraunhofer.de
Fri Mar 5 08:47:32 EST 2010
I appologize for continually replying to my own mails
but I finally made it.
The extern "C" block in main.cpp should not include system includes.
A patch with my changes to make it work is attached.
Herbert.
Herbert Thoma schrieb:
> Some more experiments:
>
> Qt 4.4.0 is not sufficient because it does not provide QSharedPointer,
> so I installed Qt 4.6.2 and I inserted a #define HAVE_GUILE18 in
> src/engine/engine-helpers.c. This way everything compiles but the very
> final main.cpp.
>
> I do not really understand the error:
>
> [ 99%] Building CXX object src/gnc/CMakeFiles/cutecash.dir/main.cpp.o
> In file included from /usr/include/c++/4.3/iosfwd:46,
> from /usr/include/gmp.h:24,
> from /usr/include/libguile.h:24,
> from /home/tma/gnucash/gnucash_cvs/cutecash/src/gnc/main.cpp:31:
> /usr/include/c++/4.3/bits/stringfwd.h:48: error: template with C linkage
> /usr/include/c++/4.3/bits/stringfwd.h:51: error: template with C linkage
> /usr/include/c++/4.3/bits/stringfwd.h:54: error: template with C linkage
> /usr/include/c++/4.3/bits/stringfwd.h:58: error: template specialization with C linkage
> /usr/include/c++/4.3/bits/stringfwd.h:63: error: template specialization with C linkage
> In file included from /usr/include/c++/4.3/iosfwd:47,
> from /usr/include/gmp.h:24,
> from /usr/include/libguile.h:24,
> from /home/tma/gnucash/gnucash_cvs/cutecash/src/gnc/main.cpp:31:
> /usr/include/c++/4.3/bits/postypes.h:90: error: template with C linkage
> /usr/include/c++/4.3/bits/postypes.h:193: error: template with C linkage
> /usr/include/c++/4.3/bits/postypes.h:198: error: template with C linkage
> In file included from /usr/include/gmp.h:24,
> from /usr/include/libguile.h:24,
> from /home/tma/gnucash/gnucash_cvs/cutecash/src/gnc/main.cpp:31:
> /usr/include/c++/4.3/iosfwd:51: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:54: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:57: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:60: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:63: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:66: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:70: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:74: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:78: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:82: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:85: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:88: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:91: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:94: error: template with C linkage
> /usr/include/c++/4.3/iosfwd:97: error: template with C linkage
> In file included from /usr/include/libguile.h:24,
> from /home/tma/gnucash/gnucash_cvs/cutecash/src/gnc/main.cpp:31:
> /usr/include/gmp.h:2136: error: declaration of C function ‘std::ostream& operator<<(std::ostream&, const __mpq_struct*)’ conflicts with
> /usr/include/gmp.h:2135: error: previous declaration ‘std::ostream& operator<<(std::ostream&, const __mpz_struct*)’ here
> /usr/include/gmp.h:2137: error: declaration of C function ‘std::ostream& operator<<(std::ostream&, const __mpf_struct*)’ conflicts with
> /usr/include/gmp.h:2136: error: previous declaration ‘std::ostream& operator<<(std::ostream&, const __mpq_struct*)’ here
> /usr/include/gmp.h:2139: error: declaration of C function ‘std::istream& operator>>(std::istream&, __mpq_struct*)’ conflicts with
> /usr/include/gmp.h:2138: error: previous declaration ‘std::istream& operator>>(std::istream&, __mpz_struct*)’ here
> /usr/include/gmp.h:2140: error: declaration of C function ‘std::istream& operator>>(std::istream&, __mpf_struct*)’ conflicts with
> /usr/include/gmp.h:2139: error: previous declaration ‘std::istream& operator>>(std::istream&, __mpq_struct*)’ here
> make[2]: *** [src/gnc/CMakeFiles/cutecash.dir/main.cpp.o] Fehler 1
> make[1]: *** [src/gnc/CMakeFiles/cutecash.dir/all] Fehler 2
> make: *** [all] Fehler 2
>
> Herbert.
>
> Herbert Thoma schrieb:
>> Hi Christian,
>>
>> cool project! I tried to build cutecash and ran into some problems:
>>
>> I run SuSE 11.0 on this computer. SuSE 11.0 is not so old, however, it
>> lacks your required minimum versions of glib and Qt.
>> You require glib (and gobject, gmodule, gthread) 2.20.0 but GnuCash
>> only requires 2.12.0.
>> You require Qt 4.5.0 but I have only 4.4.0.
>> I changed the minimum requirements in CMakeLists.txt to glib 2.12.0
>> and Qt 4.4.0 and cmake completed successfully.
>>
>> Compiling fails with the following error:
>> [ 62%] Building C object src/engine/CMakeFiles/engine.dir/engine-helpers.c.o
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c: In function ‘gnc_query2scm’:
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c:1712: error: ‘scm_block_gc’ undeclared (first use in this function)
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c:1712: error: (Each undeclared identifier is reported only once
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c:1712: error: for each function it appears in.)
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c: In function ‘gnc_scm2query_v2’:
>> /home/tma/gnucash/gnucash_cvs/cutecash/src/engine/engine-helpers.c:2013: error: ‘scm_block_gc’ undeclared (first use in this function)
>> make[2]: *** [src/engine/CMakeFiles/engine.dir/engine-helpers.c.o] Fehler 1
>> make[1]: *** [src/engine/CMakeFiles/engine.dir/all] Fehler 2
>> make: *** [all] Fehler 2
>>
>> The problem are some section like this:
>> #ifndef HAVE_GUILE18
>> --scm_block_gc;
>> #endif
>> in src/engine/engine-helpers.c
>>
>> Do you know how to check for the guile version and how to set the HAVE_GUILE18 if required
>> in cmake?
>>
>> Keep up this interesting work!
>>
>> Herbert.
>>
>> Christian Stimming schrieb:
>>> I'd like to explain my recent experiments with C++ and cmake: I was tired of
>>> the amount of code one has to write in the C language to achieve seemingly
>>> trivial tasks. In my day-time projects with other, more GUI-suited,
>>> programming languages, the simple tasks can be written sooo much simpler,
>>> leaving much more time for the actual challenging tasks. In gnucash, over and
>>> over again I thought couldn't the GUI be written in any of the more modern
>>> languages and/or toolkits. I mean, can we get the fun into gnucash coding
>>> again?
>>>
>>> Actually, we can.
>>>
>>> Announcing a new sub-project in gnucash: The non-GUI parts are re-used in the
>>> state they are, in the C language. This means the double-entry principles and
>>> all of the other achievments in the "engine" and xml-backend and eventually
>>> other backends can be re-used. But the GUI is rewritten completely new, from
>>> scratch, in C++ and using the Qt toolkit. Fun again. The build system is CMake
>>> because its configuration runs magnitudes faster. Fun again. And as a final
>>> bonus, for MS windows more compiler than before are supported, namely this
>>> whole new project can be compiled by MS Visual Studio as well. So here it is:
>>>
>>> Cutecash
>>> Free Finance Software. Easy to develop, easy to use.
>>>
>>> Currently this is only a proof-of-concept for developers: You can load an
>>> existing gnucash XML file, and it will show the list of accounts as a flat
>>> table in a QTableView. The fun part is how easy it was to add this display of
>>> all accounts, so it will probably take only another 1-2 hours until the
>>> account list is a tree to be viewed in a QTreeView. And a QTableView with the
>>> splits of an account can't be far...
>>>
>>> To give this a try, have qt4 (>=4.5.0) and cmake (>= 2.6.0) installed and:
>>>
>>> mkdir build-cutecash
>>> cd build-cutecash
>>> cmake ..
>>> make
>>> ./src/gnc/cutecash
>>>
>>> Have fun (again)!
>>>
>>> Christian
>>> _______________________________________________
>>> gnucash-devel mailing list
>>> gnucash-devel at gnucash.org
>>> https://lists.gnucash.org/mailman/listinfo/gnucash-devel
>>>
>
--
Herbert Thoma
Dipl.-Ing., MBA
Head of Video Group
Multimedia Realtime Systems Department
Fraunhofer IIS
Am Wolfsmantel 33, 91058 Erlangen, Germany
Phone: +49-9131-776-6130
Fax: +49-9131-776-6099
email: tma at iis.fhg.de
www: http://www.iis.fhg.de/
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