WINSCW compile time option

[sivareddy_jntu]

hai,
I'm porting my proj (developed in 'C') to Symbian.

I've huge no of compile errors while compiling for Emulator

For eg.,
char *ptr = malloc(10);

Error: Can't convert 'void *' to 'char *'

In 'C' its a just warning. But in C++ its giving error.

For GCCE compiler, by adding the following option '-fpermissive', the error got downgraded to warning.

File: GCCE.mk

C_LANG_OPTION: -x c++ -fpermissive

But I'm unable to find similar type of flags for WINSCW compiler.

I've added the follwing line in MMP file, but still no use.

OPTION CW -w implicit -lang c++ -fpermissive

Environment: S60_3rd_MR, WINSCW, Carbide 2.0

How can I supress this type of typecast errors.

Any help greately appreciated.

regards
-Siva

[skumar_rao]

try using OpenC/C++

[sivareddy_jntu]

Can u give detailed solution b'coz i am not getting u.

[skumar_rao]

Can u give detailed solution b'coz i am not getting u.

as you are poring a C project to Symbian.c++, it is suggest that you use OpenC/C++ PlugIn.found in http://www.forum.nokia.com/Resources...0_3rd_Edition/

[sivareddy_jntu]

I have downloaded specified archieve file and try extract data2.cab it is giving error as "The archieve is either unknown formatt or damaged".

[skumar_rao]

I have downloaded specified archieve file and try extract data2.cab it is giving error as "The archieve is either unknown formatt or damaged".

looks like your download file has problem. you might want to try again or on another machine

[laa-laa]

hai,
In 'C' its a just warning. But in C++ its giving error.

Why not fix the warning/error by casting the void* to whatever variable type you are assigning it to, in this case char*?

Also if you're porting C, then you should compile your sources as C. There are at least two ways to achieve this:

1. Rename the source files to have a .c suffix.

2. Add the following to your MMP file:

OPTION CW -lang c
OPTION GCCE -x c

Note that these options affect all files in the MMP file. Therefore option 1 is preferable

Lauri

[sivareddy_jntu]

I have many files nearly 2000 . Among 2000 files 500 files showing errors.These errors are being showed in WINSCW only but not in GCCE.Thus i want to know is there any setting to disable all these errors.And i have some c header files and others are CPP header files .So while doing as u said carbide giving error like "Declaration syntax error Epoc32\include\e32cmn.h".

[wizard_hu_]

You should keep standard C and Symbian C++ code in separate files. Especially since C code can not really do anything with C++ inserts, normally it happens in the other direction: C++ (including Symbian C++) code calls into C, using extern "C".

[sivareddy_jntu]

I have kept cpp and c standards in separate files but my project has both c and cpp files.While compiling with GCCE compiler i am not getting any error but warnings.If i compile with winscw am getting errors which are warnings in GCCE.How do i get suppressed by WINSCW these errors???.And main problem is why GCCE is giving warnings,WINSCW is giving errors.And where to do changes and how to do inorder to get same behaviour on both compilers.


Any help woulb be appreciated greatly.
Regards
Siav.

[sivareddy_jntu]

Hi,

Thanks all for your prompt responses.

As you sugested, I have kept standard C and Symbian C++ code in sepeare files.

My project has Framework where all O.S related stuff will be implemented.
Rest of the project (C code) will use that FWK by including respective FWK header file, which inturn contains Symbian header files. Thus my 'C' code will have 'C++' tokens.

If I compile my 'C' file as 'C' file , it results in compilation error for 'C++' part.

Eg., fwk_socket.c - contains Symbian RSocket related code
fwk_socket.h - Contains generic prototypes of sockets like
fwk_udp_socket_create etc.
it includes'ES_SOCK.H'

myapp.c:
#include "fwk_socket.h"
.....
.....
.....
ret_l = fwk_udp_socket_create(.......);
.....
.....
.....

If you think this approach is not right one, please suggest the alternative.


[B]Secondly, with GCCE, I did compile 'C' files as 'C++' file, and by adding '-fpermissive' option to C_LANG_OPTION in GCCE.mk , I suppressed typecast errors to warnings.[/B]

Is there any similar way to do it on WINSCW (Emulator)
or in otherwords, how can I set compiler options for WINSCW....

Setting the following line in MMP
OPTION CW -lang C++ -f permissive is not helping....

Thanks for your time....

I have kept cpp and c standards in separate files but my project has both c and cpp files.While compiling with GCCE compiler i am not getting any error but warnings.If i compile with winscw am getting errors which are warnings in GCCE.How do i get suppressed by WINSCW these errors???.And main problem is why GCCE is giving warnings,WINSCW is giving errors.And where to do changes and how to do inorder to get same behaviour on both compilers.


Any help woulb be appreciated greatly.
Regards
Siav.