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

[Mikhail K. <mko...@gm...>]

i can see the following line inside the ./configure script

CXX=${CXX-${host_alias}-c++}

which can result in "-c++" as a name for C++ compiler binary assuming 
empty $CXX and $host_alias. Not surprising, when running configure as 
suggested by Ethan, "CXX=g++ ./configure", C++ compiler is detected 
properly and wxt terminal is enabled, and compiled.

Mikhail

On 26/12/2012 21:08, Daniel J Sebald wrote:
> 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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>