iso_c_binding question

[Arjen Markus]

Steve Kargl wrote:

>On Thu, Oct 02, 2008 at 04:42:57PM -0600, Wilbert Weijer wrote:
>  
>
>>I'm sorry to bother you, but I just had my system administrator install
>>gcc 4.3.2, so that I can combine my fortran application with the
>>Trilinos c++ libraries.
>>
>>However, including 
>>
>>   use ,intrinsic :: iso_c_binding ,only : ....
>>
>>in my code returns the error message:
>>
>>gmake[1]: *** No rule to make target
>>`/home/wilbert/pop/compile/intrinsic.o', needed by
>>`/home/wilbert/pop/compile/ImplicitStepMod.o'.  Stop.
>>
>>while changing this to: 
>>
>>  use iso_c_binding ,only :...
>>
>>returns the similar: 
>>
>>gmake[1]: *** No rule to make target
>>`/home/wilbert/pop/compile/iso_c_binding.o', needed by
>>`/home/wilbert/pop/compile/ImplicitStepMod.o'.  Stop.
>>
>>
>>Doing:
>>
>>    
>>
>>>gfortran --v
>>>      
>>>
>>in the make directory returns: 
>>
>>Using built-in specs.
>>Target: i686-pc-linux-gnu
>>Configured with: ../gcc-4.3.2/configure --prefix=/ccs/opt/x86/gcc-4.3.2
>>--with-mpfr-include=/ccs/opt/x86/mpfr-2.3.2/include --with-mpfr-
>>lib=/ccs/opt/x86/mpfr-2.3.2/lib
>>Thread model: posix
>>gcc version 4.3.2 (GCC)
>>
>>which suggests that at least I *am* using the latest version of
>>gfortran. 
>>
>>Does anybody have an idea why gfortran does not seem to recognize
>>'intrinsic', nor 'iso_c_binding'?
>>    
>>
>
>Can you do 'which gfortran' and run the gfortran with its complete
>path?
>
>It seems to me that you may have 2 different versions installed,
>and your Makefile is finding the wrong version.
>  
>
The messages are not from the compiler but from gmake. Does this mean
that in your makefile there is a utility that scans for module dependencies?
If so, that utility is not aware of intrinsic modules. At least that is 
a likely
explanation for these error messages.

Regards,

Arjen