[mvapich-discuss] mvapich2-1.7a: configure: error: Unable to convert MPI_SIZEOF_AINT to a hex string

[Anthony Chan]

MPICH2's configure uses autoconf's AC_CHECK_SIZEOF to determine the sizeof
C's basic types.  Whenever an invalid compile command is used, AC_CHECK_SIZEOF
sets the corresponding ac_cv_sizeof_* to zero and that is how the macro is defined.
What it should have happen when LD_LIBRARY_PATH is incorrect, AC_PROG_CC should
have aborted and emited error message before configure reaches AC_CHECK_SIZEOF.
Could you send us the config.log so we can take a look to see anything in
PAC_PROG_CC should be improved ?

BTW, what is corresponding mpich2 version for mvapich2-1.7a ?

A.Chan

> After tracing the issue, I found that MPI_SIZEOF_AINT is 0, and so is
> ac_cv_sizeof_int, ac_cv_sizeof_double, etc.
> 
> The error occurs when 'configure' determines the ac_cv_size_* sizes.
> Since
> my LD_LIBRARY_PATH did not contain the proper paths, a generated
> executable
> does not properly run, and 'configure' sets the size to 0 instead of
> printing an error and aborting.
> 
> Even though config.log contains multiple linker and runtime errors
> about
> missing libraries, the configure script seems to ignore those...
> 
> So, if you get MPI_SIZEOF_AINT errors, check your config.log for
> missing
> library errors and check your LD_LIBRARY_PATH!
> 
> Maik
> 
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