[CMake] TRY_COMPILE help...Does anyone know?

[Hendrik Sattler]

Zitat von Ashwin Chandra <achandra at panologic.com>:

> Hendrik,
> Sorry about the whitespace. The example you showed me is for use of the
> actual compiler during real build time. However the TRY_COMPILE MACRO is
> somehow different and does not use normal CXX_FLAGS. It's almost as if
> it has an internal built-in flags. I don't know how to invoke
> TRY_COMPILE and have it compile the test program with the proper /Fo
> flags. (It always defaults to /o).

These are two different things. With the platform file, you tell cmake  
how to work with your compiler. The TRY_COMPILE macro should use this  
information.

HS

> -----Original Message-----
> From: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] On Behalf
> Of Hendrik Sattler
> Sent: Thursday, July 30, 2009 11:00 PM
> To: cmake at cmake.org
> Subject: Re: [CMake] TRY_COMPILE help...Does anyone know?
>
> Zitat von Ashwin Chandra <achandra at panologic.com>:
>
>> I am using a custom compiler and during the initialization of CMake,
> the
>> CMakeTestCCompiler.cmake is invoked which tries to compile a simple
>> program. However the compile fails it is because of the flags passed
> to
>> the compiler.
>>
>>
>>
>> For example, the command line that is generated by CMake is:
>>
>>
>>
>> "C:\PROGRA~1\COMMON~1\COMPUW~1\NMShared\NMcl.exe  $(C_DEFINES)
>> $(C_FLAGS) -o CMakeFiles\cmTryCompileExec.dir\testCCompiler.c.obj   -c
>> C:\trunk\Debug\wxp_x86\CMakeFiles\CMakeTmp\testCCompiler.c"
>>
>>
>>
>> The "-o" should be a "-Fo", otherwise the object file generated is not
>> of the form "testCCompiler.c.obj".
>>
>>
>>
>> Is there anyway to tell CMake to use "-Fo" instead of "-o"? Or perhaps
>> disable the Test?
>>
>>
>>
>> Thanks!
>>
>>
>>
>>
>
> Putting less empty lines in mails may also help.
>
> Did you try look at the file in Modules/Platform like
> http://public.kitware.com/cgi-bin/viewcvs.cgi/Modules/Platform/cl.cmake?
> revision=1.6&root=CMake&view=markup
>
> It also uses /Fo and thus obviously sets this.
> Each other compiler also fits as example.
>
> HS
>
>
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