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From: Bas van der Vlies (basv_at_[hidden])
Date: 2007-04-12 11:14:45

Brian Barrett wrote:
> On Apr 12, 2007, at 3:45 AM, Bas van der Vlies wrote:
>> Jeff Squyres wrote:
>>> On Apr 11, 2007, at 8:08 AM, Bas van der Vlies wrote:
>>>>> The OMPI_CHECK_PACKAGE macro is a rather nasty macro that tries
>>>>> to reduce the replication of checking for a header then a
>>>>> library, then setting CFLAGS, LDFLAGS, LIBS, and all that.
>>>>> There are two components that use the TM libraries, so we have
>>>>> a centralized macro that sets the configuration data for the
>>>>> two components. The -I, -L, -ls are set in OMPI_CHECK_PACKAGE.
>>>>> In the OMPI_CHECK_TM macro, you probably want to check for pbs-
>>>>> config, then if that fails, run the OMPI_CHECK_PACKAGE stuff.
>>>>> Of course, you might want to run the OMPI_CHECK_PACKAGE code
>>>>> with CFLAGS and LDFLAGS set to what you get from pbs-config, to
>>>>> make sure the libraries actually work. The way we set flags is
>>>>> a bit weird -- you need to set the environment variables:
>>>>> $1_CPPFLAGS
>>>>> $1_CFLAGS
>>>>> $1_LDFLAGS
>>>>> $1_LIBS
>>>> I have made a crude version that uses 'pbs-config' and check uses
>>>> macro /include is appended if it not /usr or /usr/include. So
>>>> there must option to prevent this (pbs-config give the right
>>>> value). Then i do not have to set the CPPFLAGS variable.
>>>> For the library name there is also -l prepended so i can not use
>>>> the name form 'pbs-config --libs' and it as the same problem as
>>>> with checking the header if it is not standard then /lib is
>>>> appended.
>>> What about assigning $1_<foo> directly and then passing flags that
>>> will be ignored to OMPI_CHECK_PACKAGE (e.g., "/usr")? I have not
>>> tried this at all -- just hacked this in emacs. So it may not
>>> even compile -- you'll need to test it. See new attachment. :-)
>>> --Jeff Squyres
>>> Cisco Systems
>> Jeff,
>> Maybe is was not clear enough ;-). The $1_<FLAGS> do not work i
>> had to use CPPFLAGS instead of $1_CPPFLAGS else the test fails. On
>> our site the torque library is found in /usr/lib so that can be
>> found else we also
>> must set the LDFLAGS flag.
>> I have the right values of include/library directory but they are
>> handled as directory prefix by the OMPI_CHECK_PACKAGE macro and not
>> as directory.
>> What i tried to accomplish was that the library name was set by a
>> variable. So if torque decided to use another name for the library
>> we do not have to change the macro again.
> Sorry not to respond yesterday -- I was frantically writing a couple
> of papers that desperately needed finishing. Anyway, yeah, I forgot
> that OMPI_CHECK_PACKAGE did all that stuff (I don't know why I forgot
> -- that's the whole point of OMPI_CHECK_PACKAGE). Anyway, I'd just
> figure out what the CFLAGS, LDFLAGS, and LIBS required for TM are
> (using pbs-config, of course), then call an AC_CHECK_HEADER and
> AC_CHECK_LIB to make sure the headers and libs are ok. Then set $1_
> {CFLAGS, LDFLAGS, LIBS} as needed and return. Just remember that if
> you set something in CFLAGS or friends during the macro, that you
> should remove it before the macro returns so that all the other
> configure tests don't have those values.
Oke thanks for the explanation.

*                                                                  *
*  Bas van der Vlies                     e-mail: basv_at_[hidden]      *
*  SARA - Academic Computing Services    phone:  +31 20 592 8012   *
*  Kruislaan 415                         fax:    +31 20 6683167    *
*  1098 SJ Amsterdam                                               *
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