[Insight-users] Building ITK on Linux

[Atwood, Robert C]

 Actually , it warns for plain 'c' but gives an error for 'c++'  in 3.3.3, 3.4.6 and 4.1 versions. There was some discussion about this on the gcc list a while (years) back, someone's suggestion to make it only a warning was rejected but by the  argument used, it should be better to be consistent and make the 'c' compiler return an error as well -- but I guess that hasn't happened! (Pedantic is not pedantic enough in 'c' ...)


 Probaby not a huge priority. Also the idea that the man page should reflect this has apparently not been incorporated. 
___________________
   -Wlong-long
           Warn if long long type is used.  This is default. ...
___________________

 
There is no combination of options that I or the original gcc list poster could find, that  causes long-long to be a warning for c++ , it is either accepted silently or it's an error. 




> -----Original Message-----
> From: insight-users-bounces+r.atwood=imperial.ac.uk at itk.org 
> [mailto:insight-users-bounces+r.atwood=imperial.ac.uk at itk.org]
>  On Behalf Of Karthik Krishnan
> Sent: 16 February 2007 17:08
> To: Krishnaveni Budati
> Cc: insight-users at itk.org
> Subject: Re: [Insight-users] Building ITK on Linux
> 
> Please remove   "-pedantic" . I remember gcc 3.4 used to give 
> warnings exactly like the ones you have with -pedantic : 
>    " ISO C++ does not support 'long long' "
> 
> I presume gcc4.1 throws an error for the same.   (typical of 
> gcc... warn users with a few versions before erroring them out :) ) 
> 
> You might also want to remove the flag -Wlong-long (In any 
> case, -Wlong-long and -Wno-long-long are taken into account 
> only if -pedantic flag is specified).
> 
> Please let us know if this works for you.
> -karthik 
> 
> 
> 
> On 2/16/07, Krishnaveni Budati <kbudati at gmail.com> wrote:
> 
> 	Hi Mathieu,
> 	
> 	Thank you for your email.  Using echo $CXXFLAGS, the 
> environment variable has the following value:
> 	
> 	-pedantic -Wall -W -Wfloat-equal -Wshadow 
> -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings 
> -Wmissing-prototypes -Wpacked -Wunreachable-code -Winline 
> -Wlong-long -Wctor-dtor-privacy -Wnon-virtual-dtor -Wreorder 
> -Wold-style-cast -Woverloaded-virtual -Wsign-promo -Wsynth
> 	
> 	Version of g++:
> 	g++ (GCC) 4.1.0 (SUSE Linux)
> 	Copyright (C) 2006 Free Software Foundation, Inc.
> 	
> 	As you suspected, CXXFLAGS has -pedantic. Could you 
> please tell me what could be done further.
> 	
> 	Thank you,
> 	Krishnaveni
> 	
> 	
> 	
> 	On 2/16/07, Mathieu Malaterre 
> <mathieu.malaterre at kitware.com > wrote:
> 
> 		Krishnaveni Budati wrote:
> 		> Hi,
> 		>
> 		> When I am trying to build ITK on Linux, I am 
> running into errors, when
> 		> running make. I have attached the error file 
> with this email. Could you
> 		> please tell me what could be a possible solution. 
> 		>
> 		> I am using ITK Version - 3.x
> 		> and OS is Suse Linux
> 		>
> 		> Thank you,
> 		> Krishnaveni
> 		>
> 		>
> 		> 
> --------------------------------------------------------------
> ----------
> 		>
> 		> cc1plus: warning: command line option 
> "-Wmissing-prototypes" is valid for Ada/C/ObjC but not for C++
> 		> 
> /home/rahul/Desktop/Insight/InsightToolkit-3.0.1/Utilities/Met
> aIO/metaTypes.h:53: error: ISO C++ does not support ‘long long’ 
> 		
> 		
> 		Hello Krishnaveni,
> 		
> 		        Could you tell us what are your 
> CXXFLAGS. Two way to get them either:
> 		
> 		$ echo $CXXFLAGS
> 		or directly in the ITK binary directory:
> 		
> 		$ cd ITK-bin
> 		$ grep CXX_FLAGS CMakeCache.txt
> 		
> 		        Could you please post that to the list 
> ? At the same time post the
> 		version of g++:
> 		
> 		$ g++ --version
> 		
> 		Thanks
> 		Mathieu
> 		Ps: I suspect you have something like -pedantic 
> / -pedantic-errors or 
> 		maybe -Werror
> 		
> 
> 
> 
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