Re: Slackware 14.0, problem compiling with wxt terminal for gnuplot 4.6, while OK for 4.4.4

[Daniel J S. <dan...@ie...>]

There is something subtle wrong with the compilation expression.  It is 
constructing a command '-c++', not 'c++', and the command is treated as 
an option.  Take a closer look at the configuration code to see how that 
extra dash in front is coming about.

Dan


On 12/26/2012 01:59 PM, Mikhail Kononets wrote:
> Thanks for suggestions, Ethan, i shall give it a try.
>
> yes i do get a compiler when executing "c++" or "g++", like:
>
> $ c++ --version
> c++ (GCC) 4.7.1
> [snip]
> $ g++ --version
> g++ (GCC) 4.7.1
> [snip]
>
> on my system "c++" is a symlink to "g++", and "g++" is a symlink to the
> actual compiler binary:
>
> $ ls -l `which c++`
> lrwxrwxrwx 1 root root 3 Dec 24 23:45 /usr/bin/c++ ->  g++*
> $ ls -l `which g++`
> lrwxrwxrwx 1 root root 13 Dec 24 23:45 /usr/bin/g++ ->  g++-gcc-4.7.1*
> $ ls -l `which g++-gcc-4.7.1`
> -rwxr-xr-x 1 root root 542132 Jun 20  2012 /usr/bin/g++-gcc-4.7.1*
>
> thanks again
> Mikhail
>
>
> On 26/12/2012 20:46, sfeam (Ethan Merritt) wrote:
>> On Wednesday, 26 December 2012, Mikhail Kononets wrote:
>>> Ethan, thank you for spending time on me.
>>>
>>> I think i do have C++ compiler properly installed and in the default
>>> path for execution, because gnuplot 4.4.4 can detect C++ compiler and
>>> can be successfully compiled with wxt support on my system (i am now
>>> using gnuplot 4.4.4 with wxt terminal). Can anything else be wrong?
>>
>> So when you type "c++" at the command line you do get a compiler?
>> Note that the usual name for the gcc C++ compiler is "g++" not "c++".
>>
>> I don't know why your system might be confused, but if "g++" works
>> and "c++" does not, then you can probably proceed by doing
>> (csh/tcsh)
>>     setenv CXX g++
>>     ./configure
>> or (bash/sh)
>>     export CXX=g++
>>     ./configure
>>
>>>
>>> Mikhail
>>>
>>>
>>> On 26/12/2012 20:00, sfeam (Ethan Merritt) wrote:
>>>>> configure:YYYYY: -c++ -c -g -O2   -I/usr/include conftest.cpp>&5
>>>>>>    ./configure: line XXXXX: -c++: command not found
>>>> [snip]
>>>>>>    configure:12223: WARNING: No C++ compiler found. The wxWidgets terminal
>>>>>>    will not be compiled.
>>>>>>    Am i doing anything wrong? GCC is 4.7.1.
>>>> The error message is perfectly clear.
>>>> You do not have a C++ compiler installed (or if you do then it's not in
>>>> the default path for execution).
>>>>
>>>> 	Ethan
>>>>
>>>>
>>>
>>>
>>
>
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-- 

Dan Sebald
email: daniel(DOT)sebald(AT)ieee(DOT)org
URL: http://www(DOT)dansebald(DOT)com