[CMake] Duplicated messages and check for g++

[Filipe Sousa]

Alan W. Irwin wrote:
> On 2006-09-13 11:33+0700 Slava Semushin wrote:
> 
>>    Hello!
>>
>>    When I run cmake I see following messages:
>>
>>    tetaneg% cmake .
>>    -- Check for working C compiler: gcc
>>    -- Check for working C compiler: gcc -- works
>>    -- Check size of void*
>>    -- Check size of void* - done
>>    -- Check for working CXX compiler: c++
>>    -- Check for working CXX compiler: c++ -- works
>>    [skip]
>>
>>    I have 2 questions:
>>
>>    - Why for each check was printed 2 similar messages?
> 
> That is the CMake style; at the start of a test it tells what it is going to
> do (e.g., "Check for working C compiler: gcc"), and at the end of the test
> it gives the same message followed by the positive result (e.g., "-- works")
> or the negative result (e.g., "-- broken") depending on the result of the
> test.  See CMakeTestCCompiler.cmake for how this style is implemented for
> the first question above. Actually, I think it is an excellent style.
> 
> Your second question about turning off the automatic C++ test for C-only
> projects, I will leave to others more knowledgable than me.

PROJECT(foo C) # c only

PROJECT(foo CXX) # c++ only

-- 
Filipe Sousa

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