[mpich-devel] ./configure --enable-timer-type help output missing

[Balaji, Pavan]

It is convenient to have all the help output be present in the top-level configure.  We need to figure out how to make that happen while still allowing multiple independent packages inside MPICH.  We don't have a good solution for that yet, but we are open to suggestions.

  -- Pavan

> On Apr 7, 2016, at 3:24 PM, Jeff Hammond <jeff.science at gmail.com> wrote:
> 
> I recall that the base configure script used to emit the help associated with --enable-timer-type.  It no longer does so, although the option is still present in src/mpl/configure.
> 
> Do I have a reasonable expectation of seeing --help output for all options in the base configure, or am I expected to run --help against every configure in the tree?
> 
> Thanks,
> 
> Jeff
> 
> jrhammon-mac01:git jrhammon$ ./configure --help | grep time
>         runtime   - error checking controllable at runtime through environment
>         runtime - Runtime control of data collected
>         runtime         - Alias to "multiple"
>   --enable-mutex-timing   calculate the time spent waiting on mutexes
>                           speeds up one-time build
>                           sometimes confusing) to the casual installer
>               User-defined run-time library search path.
> jrhammon-mac01:git jrhammon$ ./src/mpl/configure --help | grep time
>                           speeds up one-time build
>   --enable-timer-type=name - Select the timer to use for MPI_Wtime and
>                              internal timestamps.
>         gethrtime          - Solaris timer (Solaris systems only)
>         clock_gettime      - Posix timer (where available)
>         gettimeofday       - Most Unix systems
>         linux86_cycle      - Linux x86; returns cycle counts, not time in seconds*
>         gcc_ia64_cycle     - IPF ar.itc timer*
> mach_absolute_time - Mach absolute time (alternative to clock_gettime
>         device             - The timer is provided by the device
>         *Note that the cycle timers are intended to be used by
>               User-defined run-time library search path.
> 
> 
> --
> Jeff Hammond
> jeff.science at gmail.com
> http://jeffhammond.github.io/
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