Hello,
I am new to the autoconf mail list (as well as to autoconf)
Therefore I will first introduce my-self, my name is Sébastien Le Roux I
am French,
and I am a post-doc in physics in Central Michigan University.
I have to confess that I subscribed to this mailing list to find an
autoconf guru :)
So far between me and autoconf everything's great, I have prepared my
configure.ac
and its working fine (file attached .. and only checks for Fortran
compilers and MPI lib)
Thus I have a question concerning the behavior of the 'configuration'
process,
I would like to understand how does the AC_PROG_FC check for any Fortran
compiler.
Indeed so far I've seen that even if the first F90 compiler that appears
in my $PATH (env var)
is not the GNU fortran compiler (ie. ifort) the result of the AC_PROG_FC
will be
to put FC="gfortran" ... how can this be possible ... the gfortran / f95
command of course
appears in my $PATH but in this case after the 'ifort' command.
Anyway all compilation processes are fine using the FC="ifort" in the
configure line.
I just want to have an idea on the behavior of the AC_PROG_FC.
By the way I did not find this information elsewhere which explains why
I have subscribed to the
autoconf mailing list ... if (for some reason) this would not be
suitable, I will apologize
and as far as you will let me know I will unsubscribe to the list.
Best regards.
Sébastien
--
====================================================
Dr. Sébastien Le Roux
Department of Physics
203 Dow Science
Central Michigan University
Mt. Pleasant, MI 48859, USA
E-mail: s.le-roux@xxxxxxxxx
Webpage: http://www.phy.cmich.edu/people/lerou1s/
Fax: +1 (989) 774 2697
Phone: +1 (989) 774 3180
====================================================
dnl Process this file with autoconf to produce a configure script.
AC_INIT([rings], [1.0], [s.le-roux@xxxxxxxxx])
AM_INIT_AUTOMAKE
AC_LANG_PUSH([Fortran])
dnl -------------- M4 MPI lib check thanks to: ---------------
dnl ------- Steven G. Johnson <stevenj@xxxxxxxxxxxx> -------
dnl --- and Julian C. Cummings <cummings@xxxxxxxxxxxxxxxx> ---
dnl ----------------------------------------------------------
AC_DEFUN([ACX_MPI], [
AC_PREREQ(2.50) dnl for AC_LANG_CASE
AC_LANG_CASE([Fortran], [
AC_REQUIRE([AC_PROG_FC])
AC_ARG_VAR(MPIFC,[MPI Fortran compiler command])
AC_CHECK_PROGS(MPIFC, mpif90 mpxlf95_r mpxlf90_r mpxlf95 mpxlf90 mpf90 cmpif90c, $FC)
acx_mpi_save_FC="$FC"
FC="$MPIFC"
AC_SUBST(MPIFC)
])
if test x = x"$MPILIBS"; then
AC_MSG_CHECKING([for MPI_Init])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[ call MPI_Init])],[MPILIBS=" "
AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)])
fi
AC_LANG_CASE([Fortran], [
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(fmpi, MPI_Init, [MPILIBS="-lfmpi"])
fi
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpichf90, MPI_Init, [MPILIBS="-lmpichf90"])
fi
])
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpi, MPI_Init, [MPILIBS="-lmpi"])
fi
if test x = x"$MPILIBS"; then
AC_CHECK_LIB(mpich, MPI_Init, [MPILIBS="-lmpich"])
fi
AC_LANG_CASE([Fortran], [if test x != x"$MPILIBS"; then
AC_MSG_CHECKING([for mpif.h])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[ include 'mpif.h'])],[AC_MSG_RESULT(yes)], [MPILIBS=""
AC_MSG_RESULT(no)])
fi])
AC_LANG_CASE([Fortran], [FC="$acx_mpi_save_FC"])
AC_SUBST(MPILIBS)
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x = x"$MPILIBS"; then
$2
:
else
ifelse([$1],,[AC_DEFINE(HAVE_MPI,1,[Define if you have the MPI library.])],[$1])
:
fi
])dnl ACX_MPI
dnl ----------------------------------------------------------
dnl ----------------------------------------------------------
dnl ----------------------------------------------------------
AC_DEFUN([AC_RINGS_WITH_MPI],[
AC_ARG_WITH([mpi],
AC_HELP_STRING([--with-mpi],[Build the parallel version of the R.I.N.G.S. code])
AC_HELP_STRING([--without-mpi],[This is the default - Serial version of the R.I.N.G.S. code])
,[
if test "$with_mpi" = "yes" ; then
ACX_MPI([
use_mpi=yes
FC="$MPIFC"
fcflags_save="$FCFLAGS"
AC_PROG_FC([$FC], [90])
FCFLAGS="$fcflags_save"
AC_FC_SRCEXT(f90, FCFLAGS_f90="$FCFLAGS")
AC_FC_SRCEXT(F90, FCFLAGS_F90="-DMPI $FCFLAGS")
],[
AC_MSG_ERROR([Cannot compile MPI program])
])
else
use_mpi=no
fi
],[
use_mpi=no
])
])dnl end of AC_RINGS_WITH_MPI
AC_RINGS_WITH_MPI
if test "$use_mpi" = "no" ; then
fcflags_save="$FCFLAGS"
AC_PROG_FC([gfortran f95 f90 pgf90 epcf90 ifort ifc xlf90 g95 fort xlf95 efc pgf95 lf95], [90])
FCFLAGS="$fcflags_save"
AC_FC_SRCEXT(f90, FCFLAGS_f90="$FCFLAGS")
AC_FC_SRCEXT(F90, FCFLAGS_F90="$FCFLAGS")
fi
AC_FC_LIBRARY_LDFLAGS
AC_FC_FREEFORM
AC_LANG_POP([Fortran])
AC_CONFIG_FILES([
Makefile
src/Makefile
])
AC_OUTPUT
_______________________________________________
Autoconf mailing list
Autoconf@xxxxxxx
http://lists.gnu.org/mailman/listinfo/autoconf
