Re: searching for gsl library

[Juan Jose Gomez Cadenas <gomez at ific dot uv dot es>]

Thanks Alan, AM_PATH_GSL does the trick. AC_CHECK_LIB works also but one
has to AC_CHECK_LIB firs for gslcblas.

salud,

JJ
> Hi Juan Jose,
>
> I think you can ommit the AC_CHECK_LIB(gsl,main) completely.
> AM_PATH_GSL does that for you...
>
> checking for gsl-config... (cached) /usr/bin/gsl-config
> checking for GSL - version >= 0.2.5... yes
> checking for inline... (cached) inline
>
> came out from:
>
> dnl Checks for programs.
> dnl Checks for libraries.
> AM_PATH_GLIB // another lib
> AM_PATH_XML2 // another lib
> AM_PATH_GSL  // sufficient check for gsl :)
>
> in my configure.in
>
> I also have this line:
>
> AC_CHECK_LIB(atlas,ATL_ctrsv, [ATLAS_LIBS="-latlas
> -lcblas"],[ATLAS_LIBS=""])
> AC_SUBST(ATLAS_LIBS)
>
> complemented with an $(ATLAS_LIBS) prior to $(GSL_LIBS) in Makefile.am
> to automatically check for Atlas.
>
> I think your check fails because there is no symbol named main:
>
> aspuru at cornbread mb]$ nm /usr/lib/libgsl.a | grep main
> 00002ae0 T gsl_sf_gammainv
> 00001cc0 T gsl_sf_gammainv_e
>         U gsl_sf_gammainv_e
>         U gsl_sf_gammainv_e
>
>
> If you want to use AC_CHECK_LIB, you might use something like:
> AC_CHECK_LIB(gsl,gsl_block_alloc) or a function that comes out of
> 'nm'-ing the library.
>
> Salúd!
>
> Alán
>
>
>
> On Fri, 21 Feb 2003, Juan Jose Gomez Cadenas wrote:
>
>> > On Fri, 21 Feb 2003, Juan Jose Gomez Cadenas wrote:
>> >
>> >> I have problems to find gsl library using the macro
>> >
>> > Does the recipe from the manual
>> > (http://sources.redhat.com/gsl/ref/gsl-ref_2.html#SEC12) not work?
>> >
>> > - martin
>>
>> No, it doesn't, at least for me. My configure.in:
>>
>> AC_MSG_CHECKING([for math library])
>> AC_CHECK_LIB(m,main)
>>
>> AC_MSG_CHECKING([for g2c library])
>> AC_CHECK_LIB(g2c,main)
>>
>> AC_MSG_CHECKING([for gsl library])
>> AC_CHECK_LIB(gsl,main)
>> AM_PATH_GSL
>> AC_CHECK_LIB(gslcblas,cblas_sdsdot)
>>
>> ANd the result:
>> checking for math library... checking for main in -lm... yes
>> checking for g2c library... checking for main in -lg2c... yes
>> checking for gsl library... checking for main in -lgsl... no
>>
>>
>>
>>
>
> --
>
> Alan Aspuru-Guzik                    Dios mueve al jugador, y éste, la
> pieza. (510)642-2154 UC Berkeley           ¿Qué Dios detrás de Dios la
> trama empieza (925)422-8739 LLNL                de polvo y tiempo y
> sueño y agonías? -Borges