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Hello,
I have a fortran program that compiles and runs fine when compiled with windows ifort but will not work using linux ifort. think the error has something to so with reading numbers from a file but I am not sure.
Is there a difference in a linux fortran ifort compiled program reading integers from a file and a program compiled on windows using ifort reading from a file?
Also why would a fortran program compiled with windows ifort be ok with the following statement but if I compile the same code on linux ifort I get a undefined variable error.
IF(hello.EQ.0)hello=3
The variable hello is not initialized but windows seems to be ok with using uninitialized variables and linux ifort is not ok with uninitialized variables. Yes I know uninitialized variables are bad, the code is older than I am......
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Generally speaking, if the same version is used on both Linux and Windows, the core part of the compiler is identical. (that's a wild generalization of course, but still, they're basically the same)
That said, what compiler options are you using on the two systems? It sounds like you've specified -C on Linux, but not on Windows. Are there other differences?
--Lorri
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Many old programs relied on implicit initialization of variables to zero. The statement "IF(hello.EQ.0)hello=3" suggests that your old program may do so, as well. The compiler provides the -zero option to make such code work, but it is best to bring the code into compliance with the standard by initializing variables.
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